diff options
Diffstat (limited to 'arch/x86')
42 files changed, 650 insertions, 339 deletions
diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu index 5e99762eb5c2..08e442bc3ab9 100644 --- a/arch/x86/Kconfig.cpu +++ b/arch/x86/Kconfig.cpu @@ -301,15 +301,11 @@ config X86_CPU # # Define implied options from the CPU selection here -config X86_L1_CACHE_BYTES +config X86_INTERNODE_CACHE_SHIFT int - default "128" if MPSC - default "64" if GENERIC_CPU || MK8 || MCORE2 || MATOM || X86_32 - -config X86_INTERNODE_CACHE_BYTES - int - default "4096" if X86_VSMP - default X86_L1_CACHE_BYTES if !X86_VSMP + default "12" if X86_VSMP + default "7" if NUMA + default X86_L1_CACHE_SHIFT config X86_CMPXCHG def_bool X86_64 || (X86_32 && !M386) @@ -317,9 +313,9 @@ config X86_CMPXCHG config X86_L1_CACHE_SHIFT int default "7" if MPENTIUM4 || MPSC + default "6" if MK7 || MK8 || MPENTIUMM || MCORE2 || MATOM || MVIAC7 || X86_GENERIC || GENERIC_CPU default "4" if X86_ELAN || M486 || M386 || MGEODEGX1 default "5" if MWINCHIP3D || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODE_LX - default "6" if MK7 || MK8 || MPENTIUMM || MCORE2 || MATOM || MVIAC7 || X86_GENERIC || GENERIC_CPU config X86_XADD def_bool y diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S index 077e1b69198e..faff0dc9c06a 100644 --- a/arch/x86/boot/compressed/head_64.S +++ b/arch/x86/boot/compressed/head_64.S @@ -107,8 +107,7 @@ ENTRY(startup_32) lgdt gdt(%ebp) /* Enable PAE mode */ - xorl %eax, %eax - orl $(X86_CR4_PAE), %eax + movl $(X86_CR4_PAE), %eax movl %eax, %cr4 /* diff --git a/arch/x86/boot/compressed/vmlinux.lds.S b/arch/x86/boot/compressed/vmlinux.lds.S index f4193bb48782..a6f1a59a5b0c 100644 --- a/arch/x86/boot/compressed/vmlinux.lds.S +++ b/arch/x86/boot/compressed/vmlinux.lds.S @@ -4,6 +4,7 @@ OUTPUT_FORMAT(CONFIG_OUTPUT_FORMAT, CONFIG_OUTPUT_FORMAT, CONFIG_OUTPUT_FORMAT) #undef i386 +#include <asm/cache.h> #include <asm/page_types.h> #ifdef CONFIG_X86_64 @@ -46,7 +47,7 @@ SECTIONS *(.data.*) _edata = . ; } - . = ALIGN(CONFIG_X86_L1_CACHE_BYTES); + . = ALIGN(L1_CACHE_BYTES); .bss : { _bss = . ; *(.bss) diff --git a/arch/x86/include/asm/acpi.h b/arch/x86/include/asm/acpi.h index 4518dc500903..60d2b2db0bc5 100644 --- a/arch/x86/include/asm/acpi.h +++ b/arch/x86/include/asm/acpi.h @@ -118,7 +118,7 @@ extern void acpi_restore_state_mem(void); extern unsigned long acpi_wakeup_address; /* early initialization routine */ -extern void acpi_reserve_bootmem(void); +extern void acpi_reserve_wakeup_memory(void); /* * Check if the CPU can handle C2 and deeper @@ -158,6 +158,7 @@ struct bootnode; #ifdef CONFIG_ACPI_NUMA extern int acpi_numa; +extern int acpi_get_nodes(struct bootnode *physnodes); extern int acpi_scan_nodes(unsigned long start, unsigned long end); #define NR_NODE_MEMBLKS (MAX_NUMNODES*2) extern void acpi_fake_nodes(const struct bootnode *fake_nodes, diff --git a/arch/x86/include/asm/cache.h b/arch/x86/include/asm/cache.h index 549860d3be8f..2f9047cfaaca 100644 --- a/arch/x86/include/asm/cache.h +++ b/arch/x86/include/asm/cache.h @@ -9,12 +9,13 @@ #define __read_mostly __attribute__((__section__(".data.read_mostly"))) +#define INTERNODE_CACHE_SHIFT CONFIG_X86_INTERNODE_CACHE_SHIFT +#define INTERNODE_CACHE_BYTES (1 << INTERNODE_CACHE_SHIFT) + #ifdef CONFIG_X86_VSMP -/* vSMP Internode cacheline shift */ -#define INTERNODE_CACHE_SHIFT (12) #ifdef CONFIG_SMP #define __cacheline_aligned_in_smp \ - __attribute__((__aligned__(1 << (INTERNODE_CACHE_SHIFT)))) \ + __attribute__((__aligned__(INTERNODE_CACHE_BYTES))) \ __page_aligned_data #endif #endif diff --git a/arch/x86/include/asm/cacheflush.h b/arch/x86/include/asm/cacheflush.h index 9076add593a8..634c40a739a6 100644 --- a/arch/x86/include/asm/cacheflush.h +++ b/arch/x86/include/asm/cacheflush.h @@ -177,6 +177,7 @@ void clflush_cache_range(void *addr, unsigned int size); #ifdef CONFIG_DEBUG_RODATA void mark_rodata_ro(void); extern const int rodata_test_data; +extern int kernel_set_to_readonly; void set_kernel_text_rw(void); void set_kernel_text_ro(void); #else diff --git a/arch/x86/include/asm/e820.h b/arch/x86/include/asm/e820.h index 40b4e614fe71..761249e396fe 100644 --- a/arch/x86/include/asm/e820.h +++ b/arch/x86/include/asm/e820.h @@ -61,6 +61,12 @@ struct e820map { struct e820entry map[E820_X_MAX]; }; +#define ISA_START_ADDRESS 0xa0000 +#define ISA_END_ADDRESS 0x100000 + +#define BIOS_BEGIN 0x000a0000 +#define BIOS_END 0x00100000 + #ifdef __KERNEL__ /* see comment in arch/x86/kernel/e820.c */ extern struct e820map e820; @@ -126,15 +132,18 @@ extern void e820_reserve_resources(void); extern void e820_reserve_resources_late(void); extern void setup_memory_map(void); extern char *default_machine_specific_memory_setup(void); -#endif /* __KERNEL__ */ -#endif /* __ASSEMBLY__ */ -#define ISA_START_ADDRESS 0xa0000 -#define ISA_END_ADDRESS 0x100000 -#define is_ISA_range(s, e) ((s) >= ISA_START_ADDRESS && (e) < ISA_END_ADDRESS) +/* + * Returns true iff the specified range [s,e) is completely contained inside + * the ISA region. + */ +static inline bool is_ISA_range(u64 s, u64 e) +{ + return s >= ISA_START_ADDRESS && e <= ISA_END_ADDRESS; +} -#define BIOS_BEGIN 0x000a0000 -#define BIOS_END 0x00100000 +#endif /* __KERNEL__ */ +#endif /* __ASSEMBLY__ */ #ifdef __KERNEL__ #include <linux/ioport.h> diff --git a/arch/x86/include/asm/k8.h b/arch/x86/include/asm/k8.h index c2d1f3b58e5f..f70e60071fe8 100644 --- a/arch/x86/include/asm/k8.h +++ b/arch/x86/include/asm/k8.h @@ -4,13 +4,16 @@ #include <linux/pci.h> extern struct pci_device_id k8_nb_ids[]; +struct bootnode; extern int early_is_k8_nb(u32 value); extern struct pci_dev **k8_northbridges; extern int num_k8_northbridges; extern int cache_k8_northbridges(void); extern void k8_flush_garts(void); -extern int k8_scan_nodes(unsigned long start, unsigned long end); +extern int k8_get_nodes(struct bootnode *nodes); +extern int k8_numa_init(unsigned long start_pfn, unsigned long end_pfn); +extern int k8_scan_nodes(void); #ifdef CONFIG_K8_NB static inline struct pci_dev *node_to_k8_nb_misc(int node) diff --git a/arch/x86/include/asm/mpspec.h b/arch/x86/include/asm/mpspec.h index 61d90b1331c3..d8bf23a88d05 100644 --- a/arch/x86/include/asm/mpspec.h +++ b/arch/x86/include/asm/mpspec.h @@ -71,12 +71,7 @@ static inline void early_get_smp_config(void) static inline void find_smp_config(void) { - x86_init.mpparse.find_smp_config(1); -} - -static inline void early_find_smp_config(void) -{ - x86_init.mpparse.find_smp_config(0); + x86_init.mpparse.find_smp_config(); } #ifdef CONFIG_X86_MPPARSE @@ -89,7 +84,7 @@ extern void default_mpc_oem_bus_info(struct mpc_bus *m, char *str); # else # define default_mpc_oem_bus_info NULL # endif -extern void default_find_smp_config(unsigned int reserve); +extern void default_find_smp_config(void); extern void default_get_smp_config(unsigned int early); #else static inline void early_reserve_e820_mpc_new(void) { } @@ -97,7 +92,7 @@ static inline void early_reserve_e820_mpc_new(void) { } #define default_mpc_apic_id NULL #define default_smp_read_mpc_oem NULL #define default_mpc_oem_bus_info NULL -#define default_find_smp_config x86_init_uint_noop +#define default_find_smp_config x86_init_noop #define default_get_smp_config x86_init_uint_noop #endif diff --git a/arch/x86/include/asm/page_types.h b/arch/x86/include/asm/page_types.h index 6473f5ccff85..642fe34b36a2 100644 --- a/arch/x86/include/asm/page_types.h +++ b/arch/x86/include/asm/page_types.h @@ -49,7 +49,8 @@ extern unsigned long max_pfn_mapped; extern unsigned long init_memory_mapping(unsigned long start, unsigned long end); -extern void initmem_init(unsigned long start_pfn, unsigned long end_pfn); +extern void initmem_init(unsigned long start_pfn, unsigned long end_pfn, + int acpi, int k8); extern void free_initmem(void); #endif /* !__ASSEMBLY__ */ diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h index af6fd360ab35..a34c785c5a63 100644 --- a/arch/x86/include/asm/pgtable.h +++ b/arch/x86/include/asm/pgtable.h @@ -16,6 +16,8 @@ #ifndef __ASSEMBLY__ +#include <asm/x86_init.h> + /* * ZERO_PAGE is a global shared page that is always zero: used * for zero-mapped memory areas etc.. @@ -270,9 +272,9 @@ static inline int is_new_memtype_allowed(u64 paddr, unsigned long size, unsigned long new_flags) { /* - * PAT type is always WB for ISA. So no need to check. + * PAT type is always WB for untracked ranges, so no need to check. */ - if (is_ISA_range(paddr, paddr + size - 1)) + if (x86_platform.is_untracked_pat_range(paddr, paddr + size)) return 1; /* diff --git a/arch/x86/include/asm/proto.h b/arch/x86/include/asm/proto.h index 621f56d73121..4009f6534f52 100644 --- a/arch/x86/include/asm/proto.h +++ b/arch/x86/include/asm/proto.h @@ -5,18 +5,19 @@ /* misc architecture specific prototypes */ -extern void early_idt_handler(void); +void early_idt_handler(void); -extern void system_call(void); -extern void syscall_init(void); +void system_call(void); +void syscall_init(void); -extern void ia32_syscall(void); -extern void ia32_cstar_target(void); -extern void ia32_sysenter_target(void); +void ia32_syscall(void); +void ia32_cstar_target(void); +void ia32_sysenter_target(void); -extern void syscall32_cpu_init(void); +void syscall32_cpu_init(void); -extern void check_efer(void); +void x86_configure_nx(void); +void x86_report_nx(void); extern int reboot_force; diff --git a/arch/x86/include/asm/sections.h b/arch/x86/include/asm/sections.h index 1b7ee5d673c2..0a5242428659 100644 --- a/arch/x86/include/asm/sections.h +++ b/arch/x86/include/asm/sections.h @@ -2,7 +2,13 @@ #define _ASM_X86_SECTIONS_H #include <asm-generic/sections.h> +#include <asm/uaccess.h> extern char __brk_base[], __brk_limit[]; +extern struct exception_table_entry __stop___ex_table[]; + +#if defined(CONFIG_X86_64) && defined(CONFIG_DEBUG_RODATA) +extern char __end_rodata_hpage_align[]; +#endif #endif /* _ASM_X86_SECTIONS_H */ diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h index d8e71459f025..ea0e8ea15e15 100644 --- a/arch/x86/include/asm/x86_init.h +++ b/arch/x86/include/asm/x86_init.h @@ -26,7 +26,7 @@ struct x86_init_mpparse { void (*smp_read_mpc_oem)(struct mpc_table *mpc); void (*mpc_oem_pci_bus)(struct mpc_bus *m); void (*mpc_oem_bus_info)(struct mpc_bus *m, char *name); - void (*find_smp_config)(unsigned int reserve); + void (*find_smp_config)(void); void (*get_smp_config)(unsigned int early); }; @@ -125,12 +125,14 @@ struct x86_cpuinit_ops { * @calibrate_tsc: calibrate TSC * @get_wallclock: get time from HW clock like RTC etc. * @set_wallclock: set time back to HW clock + * @is_untracked_pat_range exclude from PAT logic */ struct x86_platform_ops { unsigned long (*calibrate_tsc)(void); unsigned long (*get_wallclock)(void); int (*set_wallclock)(unsigned long nowtime); void (*iommu_shutdown)(void); + bool (*is_untracked_pat_range)(u64 start, u64 end); }; extern struct x86_init_ops x86_init; diff --git a/arch/x86/kernel/acpi/sleep.c b/arch/x86/kernel/acpi/sleep.c index ca93638ba430..82e508677b91 100644 --- a/arch/x86/kernel/acpi/sleep.c +++ b/arch/x86/kernel/acpi/sleep.c @@ -78,12 +78,9 @@ int acpi_save_state_mem(void) #ifndef CONFIG_64BIT store_gdt((struct desc_ptr *)&header->pmode_gdt); - header->pmode_efer_low = nx_enabled; - if (header->pmode_efer_low & 1) { - /* This is strange, why not save efer, always? */ - rdmsr(MSR_EFER, header->pmode_efer_low, - header->pmode_efer_high); - } + if (rdmsr_safe(MSR_EFER, &header->pmode_efer_low, + &header->pmode_efer_high)) + header->pmode_efer_low = header->pmode_efer_high = 0; #endif /* !CONFIG_64BIT */ header->pmode_cr0 = read_cr0(); @@ -119,29 +116,32 @@ void acpi_restore_state_mem(void) /** - * acpi_reserve_bootmem - do _very_ early ACPI initialisation + * acpi_reserve_wakeup_memory - do _very_ early ACPI initialisation * * We allocate a page from the first 1MB of memory for the wakeup * routine for when we come back from a sleep state. The * runtime allocator allows specification of <16MB pages, but not * <1MB pages. */ -void __init acpi_reserve_bootmem(void) +void __init acpi_reserve_wakeup_memory(void) { + unsigned long mem; + if ((&wakeup_code_end - &wakeup_code_start) > WAKEUP_SIZE) { printk(KERN_ERR "ACPI: Wakeup code way too big, S3 disabled.\n"); return; } - acpi_realmode = (unsigned long)alloc_bootmem_low(WAKEUP_SIZE); + mem = find_e820_area(0, 1<<20, WAKEUP_SIZE, PAGE_SIZE); - if (!acpi_realmode) { + if (mem == -1L) { printk(KERN_ERR "ACPI: Cannot allocate lowmem, S3 disabled.\n"); return; } - - acpi_wakeup_address = virt_to_phys((void *)acpi_realmode); + acpi_realmode = (unsigned long) phys_to_virt(mem); + acpi_wakeup_address = mem; + reserve_early(mem, mem + WAKEUP_SIZE, "ACPI WAKEUP"); } diff --git a/arch/x86/kernel/apic/numaq_32.c b/arch/x86/kernel/apic/numaq_32.c index 07cdbdcd7a92..98c4665f251c 100644 --- a/arch/x86/kernel/apic/numaq_32.c +++ b/arch/x86/kernel/apic/numaq_32.c @@ -264,11 +264,6 @@ static void __init smp_read_mpc_oem(struct mpc_table *mpc) static __init void early_check_numaq(void) { /* - * Find possible boot-time SMP configuration: - */ - early_find_smp_config(); - - /* * get boot-time SMP configuration: */ if (smp_found_config) diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c index 130c4b934877..b684bb303cbf 100644 --- a/arch/x86/kernel/apic/x2apic_uv_x.c +++ b/arch/x86/kernel/apic/x2apic_uv_x.c @@ -30,10 +30,22 @@ #include <asm/apic.h> #include <asm/ipi.h> #include <asm/smp.h> +#include <asm/x86_init.h> DEFINE_PER_CPU(int, x2apic_extra_bits); static enum uv_system_type uv_system_type; +static u64 gru_start_paddr, gru_end_paddr; + +static inline bool is_GRU_range(u64 start, u64 end) +{ + return start >= gru_start_paddr && end <= gru_end_paddr; +} + +static bool uv_is_untracked_pat_range(u64 start, u64 end) +{ + return is_ISA_range(start, end) || is_GRU_range(start, end); +} static int early_get_nodeid(void) { @@ -49,6 +61,7 @@ static int early_get_nodeid(void) static int __init uv_acpi_madt_oem_check(char *oem_id, char *oem_table_id) { if (!strcmp(oem_id, "SGI")) { + x86_platform.is_untracked_pat_range = uv_is_untracked_pat_range; if (!strcmp(oem_table_id, "UVL")) uv_system_type = UV_LEGACY_APIC; else if (!strcmp(oem_table_id, "UVX")) @@ -385,8 +398,12 @@ static __init void map_gru_high(int max_pnode) int shift = UVH_RH_GAM_GRU_OVERLAY_CONFIG_MMR_BASE_SHFT; gru.v = uv_read_local_mmr(UVH_RH_GAM_GRU_OVERLAY_CONFIG_MMR); - if (gru.s.enable) + if (gru.s.enable) { map_high("GRU", gru.s.base, shift, max_pnode, map_wb); + gru_start_paddr = ((u64)gru.s.base << shift); + gru_end_paddr = gru_start_paddr + (1UL << shift) * (max_pnode + 1); + + } } static __init void map_mmr_high(int max_pnode) diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index a4ec8b647544..c1afa990a6c8 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -1136,7 +1136,7 @@ void __cpuinit cpu_init(void) wrmsrl(MSR_KERNEL_GS_BASE, 0); barrier(); - check_efer(); + x86_configure_nx(); if (cpu != 0) enable_x2apic(); diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c index 40e1835b35e8..c900b73f9224 100644 --- a/arch/x86/kernel/cpu/intel.c +++ b/arch/x86/kernel/cpu/intel.c @@ -263,8 +263,12 @@ static void __cpuinit srat_detect_node(struct cpuinfo_x86 *c) /* Don't do the funky fallback heuristics the AMD version employs for now. */ node = apicid_to_node[apicid]; - if (node == NUMA_NO_NODE || !node_online(node)) + if (node == NUMA_NO_NODE) node = first_node(node_online_map); + else if (!node_online(node)) { + /* reuse the value from init_cpu_to_node() */ + node = cpu_to_node(cpu); + } numa_set_node(cpu, node); printk(KERN_INFO "CPU %d/0x%x -> Node %d\n", cpu, apicid, node); diff --git a/arch/x86/kernel/cpu/mtrr/cleanup.c b/arch/x86/kernel/cpu/mtrr/cleanup.c index 73c86db5acbe..09b1698e0466 100644 --- a/arch/x86/kernel/cpu/mtrr/cleanup.c +++ b/arch/x86/kernel/cpu/mtrr/cleanup.c @@ -170,6 +170,41 @@ static int __init cmp_range(const void *x1, const void *x2) return start1 - start2; } +static int __init clean_sort_range(struct res_range *range, int az) +{ + int i, j, k = az - 1, nr_range = 0; + + for (i = 0; i < k; i++) { + if (range[i].end) + continue; + for (j = k; j > i; j--) { + if (range[j].end) { + k = j; + break; + } + } + if (j == i) + break; + range[i].start = range[k].start; + range[i].end = range[k].end; + range[k].start = 0; + range[k].end = 0; + k--; + } + /* count it */ + for (i = 0; i < az; i++) { + if (!range[i].end) { + nr_range = i; + break; + } + } + + /* sort them */ + sort(range, nr_range, sizeof(struct res_range), cmp_range, NULL); + + return nr_range; +} + #define BIOS_BUG_MSG KERN_WARNING \ "WARNING: BIOS bug: VAR MTRR %d contains strange UC entry under 1M, check with your system vendor!\n" @@ -223,22 +258,18 @@ x86_get_mtrr_mem_range(struct res_range *range, int nr_range, subtract_range(range, extra_remove_base, extra_remove_base + extra_remove_size - 1); - /* get new range num */ - nr_range = 0; - for (i = 0; i < RANGE_NUM; i++) { - if (!range[i].end) - continue; - nr_range++; - } if (debug_print) { printk(KERN_DEBUG "After UC checking\n"); - for (i = 0; i < nr_range; i++) + for (i = 0; i < RANGE_NUM; i++) { + if (!range[i].end) + continue; printk(KERN_DEBUG "MTRR MAP PFN: %016lx - %016lx\n", range[i].start, range[i].end + 1); + } } /* sort the ranges */ - sort(range, nr_range, sizeof(struct res_range), cmp_range, NULL); + nr_range = clean_sort_range(range, RANGE_NUM); if (debug_print) { printk(KERN_DEBUG "After sorting\n"); for (i = 0; i < nr_range; i++) @@ -689,8 +720,6 @@ static int __init mtrr_need_cleanup(void) continue; if (!size) type = MTRR_NUM_TYPES; - if (type == MTRR_TYPE_WRPROT) - type = MTRR_TYPE_UNCACHABLE; num[type]++; } diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c index 5a1b9758fd62..309689245431 100644 --- a/arch/x86/kernel/ftrace.c +++ b/arch/x86/kernel/ftrace.c @@ -189,9 +189,26 @@ static void wait_for_nmi(void) nmi_wait_count++; } +static inline int +within(unsigned long addr, unsigned long start, unsigned long end) +{ + return addr >= start && addr < end; +} + static int do_ftrace_mod_code(unsigned long ip, void *new_code) { + /* + * On x86_64, kernel text mappings are mapped read-only with + * CONFIG_DEBUG_RODATA. So we use the kernel identity mapping instead + * of the kernel text mapping to modify the kernel text. + * + * For 32bit kernels, these mappings are same and we can use + * kernel identity mapping to modify code. + */ + if (within(ip, (unsigned long)_text, (unsigned long)_etext)) + ip = (unsigned long)__va(__pa(ip)); + mod_code_ip = (void *)ip; mod_code_newcode = new_code; diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S index 050c278481b1..7fd318bac59c 100644 --- a/arch/x86/kernel/head_32.S +++ b/arch/x86/kernel/head_32.S @@ -18,6 +18,8 @@ #include <asm/asm-offsets.h> #include <asm/setup.h> #include <asm/processor-flags.h> +#include <asm/msr-index.h> +#include <asm/cpufeature.h> #include <asm/percpu.h> /* Physical address */ @@ -297,25 +299,27 @@ ENTRY(startup_32_smp) orl %edx,%eax movl %eax,%cr4 - btl $5, %eax # check if PAE is enabled - jnc 6f + testb $X86_CR4_PAE, %al # check if PAE is enabled + jz 6f /* Check if extended functions are implemented */ movl $0x80000000, %eax cpuid - cmpl $0x80000000, %eax - jbe 6f + /* Value must be in the range 0x80000001 to 0x8000ffff */ + subl $0x80000001, %eax + cmpl $(0x8000ffff-0x80000001), %eax + ja 6f mov $0x80000001, %eax cpuid /* Execute Disable bit supported? */ - btl $20, %edx + btl $(X86_FEATURE_NX & 31), %edx jnc 6f /* Setup EFER (Extended Feature Enable Register) */ - movl $0xc0000080, %ecx + movl $MSR_EFER, %ecx rdmsr - btsl $11, %eax + btsl $_EFER_NX, %eax /* Make changes effective */ wrmsr diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S index 22db86a37643..2d8b5035371c 100644 --- a/arch/x86/kernel/head_64.S +++ b/arch/x86/kernel/head_64.S @@ -262,11 +262,11 @@ ENTRY(secondary_startup_64) .quad x86_64_start_kernel ENTRY(initial_gs) .quad INIT_PER_CPU_VAR(irq_stack_union) - __FINITDATA ENTRY(stack_start) .quad init_thread_union+THREAD_SIZE-8 .word 0 + __FINITDATA bad_address: jmp bad_address @@ -340,6 +340,7 @@ ENTRY(name) i = i + 1 ; \ .endr + .data /* * This default setting generates an ident mapping at address 0x100000 * and a mapping for the kernel that precisely maps virtual address diff --git a/arch/x86/kernel/machine_kexec_32.c b/arch/x86/kernel/machine_kexec_32.c index c843f8406da2..a3fa43ba5d3b 100644 --- a/arch/x86/kernel/machine_kexec_32.c +++ b/arch/x86/kernel/machine_kexec_32.c @@ -158,8 +158,7 @@ int machine_kexec_prepare(struct kimage *image) { int error; - if (nx_enabled) - set_pages_x(image->control_code_page, 1); + set_pages_x(image->control_code_page, 1); error = machine_kexec_alloc_page_tables(image); if (error) return error; @@ -173,8 +172,7 @@ int machine_kexec_prepare(struct kimage *image) */ void machine_kexec_cleanup(struct kimage *image) { - if (nx_enabled) - set_pages_nx(image->control_code_page, 1); + set_pages_nx(image->control_code_page, 1); machine_kexec_free_page_tables(image); } diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c index 5be95ef4ffec..35a57c963df9 100644 --- a/arch/x86/kernel/mpparse.c +++ b/arch/x86/kernel/mpparse.c @@ -667,36 +667,18 @@ void __init default_get_smp_config(unsigned int early) */ } -static void __init smp_reserve_bootmem(struct mpf_intel *mpf) +static void __init smp_reserve_memory(struct mpf_intel *mpf) { unsigned long size = get_mpc_size(mpf->physptr); -#ifdef CONFIG_X86_32 - /* - * We cannot access to MPC table to compute table size yet, - * as only few megabytes from the bottom is mapped now. - * PC-9800's MPC table places on the very last of physical - * memory; so that simply reserving PAGE_SIZE from mpf->physptr - * yields BUG() in reserve_bootmem. - * also need to make sure physptr is below than max_low_pfn - * we don't need reserve the area above max_low_pfn - */ - unsigned long end = max_low_pfn * PAGE_SIZE; - if (mpf->physptr < end) { - if (mpf->physptr + size > end) - size = end - mpf->physptr; - reserve_bootmem_generic(mpf->physptr, size, BOOTMEM_DEFAULT); - } -#else - reserve_bootmem_generic(mpf->physptr, size, BOOTMEM_DEFAULT); -#endif + reserve_early(mpf->physptr, mpf->physptr+size, "MP-table mpc"); } -static int __init smp_scan_config(unsigned long base, unsigned long length, - unsigned reserve) +static int __init smp_scan_config(unsigned long base, unsigned long length) { unsigned int *bp = phys_to_virt(base); struct mpf_intel *mpf; + unsigned long mem; apic_printk(APIC_VERBOSE, "Scan SMP from %p for %ld bytes.\n", bp, length); @@ -717,12 +699,10 @@ static int __init smp_scan_config(unsigned long base, unsigned long length, printk(KERN_INFO "found SMP MP-table at [%p] %llx\n", mpf, (u64)virt_to_phys(mpf)); - if (!reserve) - return 1; - reserve_bootmem_generic(virt_to_phys(mpf), sizeof(*mpf), - BOOTMEM_DEFAULT); + mem = virt_to_phys(mpf); + reserve_early(mem, mem + sizeof(*mpf), "MP-table mpf"); if (mpf->physptr) - smp_reserve_bootmem(mpf); + smp_reserve_memory(mpf); return 1; } @@ -732,7 +712,7 @@ static int __init smp_scan_config(unsigned long base, unsigned long length, return 0; } -void __init default_find_smp_config(unsigned int reserve) +void __init default_find_smp_config(void) { unsigned int address; @@ -744,9 +724,9 @@ void __init default_find_smp_config(unsigned int reserve) * 2) Scan the top 1K of base RAM * 3) Scan the 64K of bios */ - if (smp_scan_config(0x0, 0x400, reserve) || - smp_scan_config(639 * 0x400, 0x400, reserve) || - smp_scan_config(0xF0000, 0x10000, reserve)) + if (smp_scan_config(0x0, 0x400) || + smp_scan_config(639 * 0x400, 0x400) || + smp_scan_config(0xF0000, 0x10000)) return; /* * If it is an SMP machine we should know now, unless the @@ -767,7 +747,7 @@ void __init default_find_smp_config(unsigned int reserve) address = get_bios_ebda(); if (address) - smp_scan_config(address, 0x400, reserve); + smp_scan_config(address, 0x400); } #ifdef CONFIG_X86_IO_APIC diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 82e88cdda9bc..946a311a25c9 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -106,6 +106,7 @@ #include <asm/percpu.h> #include <asm/topology.h> #include <asm/apicdef.h> +#include <asm/k8.h> #ifdef CONFIG_X86_64 #include <asm/numa_64.h> #endif @@ -487,42 +488,11 @@ static void __init reserve_early_setup_data(void) #ifdef CONFIG_KEXEC -/** - * Reserve @size bytes of crashkernel memory at any suitable offset. - * - * @size: Size of the crashkernel memory to reserve. - * Returns the base address on success, and -1ULL on failure. - */ -static -unsigned long long __init find_and_reserve_crashkernel(unsigned long long size) -{ - const unsigned long long alignment = 16<<20; /* 16M */ - unsigned long long start = 0LL; - - while (1) { - int ret; - - start = find_e820_area(start, ULONG_MAX, size, alignment); - if (start == -1ULL) - return start; - - /* try to reserve it */ - ret = reserve_bootmem_generic(start, size, BOOTMEM_EXCLUSIVE); - if (ret >= 0) - return start; - - start += alignment; - } -} - static inline unsigned long long get_total_mem(void) { unsigned long long total; - total = max_low_pfn - min_low_pfn; -#ifdef CONFIG_HIGHMEM - total += highend_pfn - highstart_pfn; -#endif + total = max_pfn - min_low_pfn; return total << PAGE_SHIFT; } @@ -542,21 +512,25 @@ static void __init reserve_crashkernel(void) /* 0 means: find the address automatically */ if (crash_base <= 0) { - crash_base = find_and_reserve_crashkernel(crash_size); + const unsigned long long alignment = 16<<20; /* 16M */ + + crash_base = find_e820_area(alignment, ULONG_MAX, crash_size, + alignment); if (crash_base == -1ULL) { - pr_info("crashkernel reservation failed. " - "No suitable area found.\n"); + pr_info("crashkernel reservation failed - No suitable area found.\n"); return; } } else { - ret = reserve_bootmem_generic(crash_base, crash_size, - BOOTMEM_EXCLUSIVE); - if (ret < 0) { - pr_info("crashkernel reservation failed - " - "memory is in use\n"); + unsigned long long start; + + start = find_e820_area(crash_base, ULONG_MAX, crash_size, + 1<<20); + if (start != crash_base) { + pr_info("crashkernel reservation failed - memory is in use.\n"); return; } } + reserve_early(crash_base, crash_base + crash_size, "CRASH KERNEL"); printk(KERN_INFO "Reserving %ldMB of memory at %ldMB " "for crashkernel (System RAM: %ldMB)\n", @@ -699,6 +673,9 @@ static struct dmi_system_id __initdata bad_bios_dmi_table[] = { void __init setup_arch(char **cmdline_p) { + int acpi = 0; + int k8 = 0; + #ifdef CONFIG_X86_32 memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data)); visws_early_detect(); @@ -791,21 +768,18 @@ void __init setup_arch(char **cmdline_p) strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE); *cmdline_p = command_line; -#ifdef CONFIG_X86_64 /* - * Must call this twice: Once just to detect whether hardware doesn't - * support NX (so that the early EHCI debug console setup can safely - * call set_fixmap(), and then again after parsing early parameters to - * honor the respective command line option. + * x86_configure_nx() is called before parse_early_param() to detect + * whether hardware doesn't support NX (so that the early EHCI debug + * console setup can safely call set_fixmap()). It may then be called + * again from within noexec_setup() during parsing early parameters + * to honor the respective command line option. */ - check_efer(); -#endif + x86_configure_nx(); parse_early_param(); -#ifdef CONFIG_X86_64 - check_efer(); -#endif + x86_report_nx(); /* Must be before kernel pagetables are setup */ vmi_activate(); @@ -901,6 +875,13 @@ void __init setup_arch(char **cmdline_p) reserve_brk(); +#ifdef CONFIG_ACPI_SLEEP + /* + * Reserve low memory region for sleep support. + * even before init_memory_mapping + */ + acpi_reserve_wakeup_memory(); +#endif init_gbpages(); /* max_pfn_mapped is updated here */ @@ -927,6 +908,8 @@ void __init setup_arch(char **cmdline_p) reserve_initrd(); + reserve_crashkernel(); + vsmp_init(); io_delay_init(); @@ -938,27 +921,24 @@ void __init setup_arch(char **cmdline_p) early_acpi_boot_init(); + /* + * Find and reserve possible boot-time SMP configuration: + */ + find_smp_config(); + #ifdef CONFIG_ACPI_NUMA /* * Parse SRAT to discover nodes. */ - acpi_numa_init(); + acpi = acpi_numa_init(); #endif - initmem_init(0, max_pfn); - -#ifdef CONFIG_ACPI_SLEEP - /* - * Reserve low memory region for sleep support. - */ - acpi_reserve_bootmem(); +#ifdef CONFIG_K8_NUMA + if (!acpi) + k8 = !k8_numa_init(0, max_pfn); #endif - /* - * Find and reserve possible boot-time SMP configuration: - */ - find_smp_config(); - reserve_crashkernel(); + initmem_init(0, max_pfn, acpi, k8); #ifdef CONFIG_X86_64 /* diff --git a/arch/x86/kernel/tlb_uv.c b/arch/x86/kernel/tlb_uv.c index 1740c85e24bb..364d015efebc 100644 --- a/arch/x86/kernel/tlb_uv.c +++ b/arch/x86/kernel/tlb_uv.c @@ -817,10 +817,8 @@ static int __init uv_init_blade(int blade) */ apicid = blade_to_first_apicid(blade); pa = uv_read_global_mmr64(pnode, UVH_BAU_DATA_CONFIG); - if ((pa & 0xff) != UV_BAU_MESSAGE) { - uv_write_global_mmr64(pnode, UVH_BAU_DATA_CONFIG, + uv_write_global_mmr64(pnode, UVH_BAU_DATA_CONFIG, ((apicid << 32) | UV_BAU_MESSAGE)); - } return 0; } diff --git a/arch/x86/kernel/visws_quirks.c b/arch/x86/kernel/visws_quirks.c index abda6f53e71e..34a279a7471d 100644 --- a/arch/x86/kernel/visws_quirks.c +++ b/arch/x86/kernel/visws_quirks.c @@ -197,7 +197,7 @@ static void __init MP_processor_info(struct mpc_cpu *m) apic_version[m->apicid] = ver; } -static void __init visws_find_smp_config(unsigned int reserve) +static void __init visws_find_smp_config(void) { struct mpc_cpu *mp = phys_to_virt(CO_CPU_TAB_PHYS); unsigned short ncpus = readw(phys_to_virt(CO_CPU_NUM_PHYS)); diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S index 3c68fe2d46cf..f3f2104408d9 100644 --- a/arch/x86/kernel/vmlinux.lds.S +++ b/arch/x86/kernel/vmlinux.lds.S @@ -41,6 +41,32 @@ ENTRY(phys_startup_64) jiffies_64 = jiffies; #endif +#if defined(CONFIG_X86_64) && defined(CONFIG_DEBUG_RODATA) +/* + * On 64-bit, align RODATA to 2MB so that even with CONFIG_DEBUG_RODATA + * we retain large page mappings for boundaries spanning kernel text, rodata + * and data sections. + * + * However, kernel identity mappings will have different RWX permissions + * to the pages mapping to text and to the pages padding (which are freed) the + * text section. Hence kernel identity mappings will be broken to smaller + * pages. For 64-bit, kernel text and kernel identity mappings are different, + * so we can enable protection checks that come with CONFIG_DEBUG_RODATA, + * as well as retain 2MB large page mappings for kernel text. + */ +#define X64_ALIGN_DEBUG_RODATA_BEGIN . = ALIGN(HPAGE_SIZE); + +#define X64_ALIGN_DEBUG_RODATA_END \ + . = ALIGN(HPAGE_SIZE); \ + __end_rodata_hpage_align = .; + +#else + +#define X64_ALIGN_DEBUG_RODATA_BEGIN +#define X64_ALIGN_DEBUG_RODATA_END + +#endif + PHDRS { text PT_LOAD FLAGS(5); /* R_E */ data PT_LOAD FLAGS(7); /* RWE */ @@ -90,7 +116,9 @@ SECTIONS EXCEPTION_TABLE(16) :text = 0x9090 + X64_ALIGN_DEBUG_RODATA_BEGIN RO_DATA(PAGE_SIZE) + X64_ALIGN_DEBUG_RODATA_END /* Data */ .data : AT(ADDR(.data) - LOAD_OFFSET) { @@ -107,13 +135,13 @@ SECTIONS PAGE_ALIGNED_DATA(PAGE_SIZE) - CACHELINE_ALIGNED_DATA(CONFIG_X86_L1_CACHE_BYTES) + CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES) DATA_DATA CONSTRUCTORS /* rarely changed data like cpu maps */ - READ_MOSTLY_DATA(CONFIG_X86_INTERNODE_CACHE_BYTES) + READ_MOSTLY_DATA(INTERNODE_CACHE_BYTES) /* End of data section */ _edata = .; @@ -137,12 +165,12 @@ SECTIONS *(.vsyscall_0) } :user - . = ALIGN(CONFIG_X86_L1_CACHE_BYTES); + . = ALIGN(L1_CACHE_BYTES); .vsyscall_fn : AT(VLOAD(.vsyscall_fn)) { *(.vsyscall_fn) } - . = ALIGN(CONFIG_X86_L1_CACHE_BYTES); + . = ALIGN(L1_CACHE_BYTES); .vsyscall_gtod_data : AT(VLOAD(.vsyscall_gtod_data)) { *(.vsyscall_gtod_data) } @@ -166,7 +194,7 @@ SECTIONS } vgetcpu_mode = VVIRT(.vgetcpu_mode); - . = ALIGN(CONFIG_X86_L1_CACHE_BYTES); + . = ALIGN(L1_CACHE_BYTES); .jiffies : AT(VLOAD(.jiffies)) { *(.jiffies) } diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c index d11c5ff7c65e..ccd179dec36e 100644 --- a/arch/x86/kernel/x86_init.c +++ b/arch/x86/kernel/x86_init.c @@ -13,6 +13,7 @@ #include <asm/e820.h> #include <asm/time.h> #include <asm/irq.h> +#include <asm/pat.h> #include <asm/tsc.h> #include <asm/iommu.h> @@ -80,4 +81,5 @@ struct x86_platform_ops x86_platform = { .get_wallclock = mach_get_cmos_time, .set_wallclock = mach_set_rtc_mmss, .iommu_shutdown = iommu_shutdown_noop, + .is_untracked_pat_range = is_ISA_range, }; diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c index 73ffd5536f62..d406c5239019 100644 --- a/arch/x86/mm/init.c +++ b/arch/x86/mm/init.c @@ -146,10 +146,6 @@ unsigned long __init_refok init_memory_mapping(unsigned long start, use_gbpages = direct_gbpages; #endif - set_nx(); - if (nx_enabled) - printk(KERN_INFO "NX (Execute Disable) protection: active\n"); - /* Enable PSE if available */ if (cpu_has_pse) set_in_cr4(X86_CR4_PSE); diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c index 30938c1d8d5d..c973f8e2a6cf 100644 --- a/arch/x86/mm/init_32.c +++ b/arch/x86/mm/init_32.c @@ -412,7 +412,7 @@ static void __init permanent_kmaps_init(pgd_t *pgd_base) pkmap_page_table = pte; } -static void __init add_one_highpage_init(struct page *page, int pfn) +static void __init add_one_highpage_init(struct page *page) { ClearPageReserved(page); init_page_count(page); @@ -445,7 +445,7 @@ static int __init add_highpages_work_fn(unsigned long start_pfn, if (!pfn_valid(node_pfn)) continue; page = pfn_to_page(node_pfn); - add_one_highpage_init(page, node_pfn); + add_one_highpage_init(page); } return 0; @@ -703,8 +703,8 @@ void __init find_low_pfn_range(void) } #ifndef CONFIG_NEED_MULTIPLE_NODES -void __init initmem_init(unsigned long start_pfn, - unsigned long end_pfn) +void __init initmem_init(unsigned long start_pfn, unsigned long end_pfn, + int acpi, int k8) { #ifdef CONFIG_HIGHMEM highstart_pfn = highend_pfn = max_pfn; @@ -997,7 +997,7 @@ static noinline int do_test_wp_bit(void) const int rodata_test_data = 0xC3; EXPORT_SYMBOL_GPL(rodata_test_data); -static int kernel_set_to_readonly; +int kernel_set_to_readonly __read_mostly; void set_kernel_text_rw(void) { diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c index 5a4398a6006b..5198b9bb34ef 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c @@ -568,7 +568,8 @@ kernel_physical_mapping_init(unsigned long start, } #ifndef CONFIG_NUMA -void __init initmem_init(unsigned long start_pfn, unsigned long end_pfn) +void __init initmem_init(unsigned long start_pfn, unsigned long end_pfn, + int acpi, int k8) { unsigned long bootmap_size, bootmap; @@ -694,12 +695,12 @@ void __init mem_init(void) const int rodata_test_data = 0xC3; EXPORT_SYMBOL_GPL(rodata_test_data); -static int kernel_set_to_readonly; +int kernel_set_to_readonly; void set_kernel_text_rw(void) { - unsigned long start = PFN_ALIGN(_stext); - unsigned long end = PFN_ALIGN(__start_rodata); + unsigned long start = PFN_ALIGN(_text); + unsigned long end = PFN_ALIGN(__stop___ex_table); if (!kernel_set_to_readonly) return; @@ -707,13 +708,18 @@ void set_kernel_text_rw(void) pr_debug("Set kernel text: %lx - %lx for read write\n", start, end); + /* + * Make the kernel identity mapping for text RW. Kernel text + * mapping will always be RO. Refer to the comment in + * static_protections() in pageattr.c + */ set_memory_rw(start, (end - start) >> PAGE_SHIFT); } void set_kernel_text_ro(void) { - unsigned long start = PFN_ALIGN(_stext); - unsigned long end = PFN_ALIGN(__start_rodata); + unsigned long start = PFN_ALIGN(_text); + unsigned long end = PFN_ALIGN(__stop___ex_table); if (!kernel_set_to_readonly) return; @@ -721,14 +727,21 @@ void set_kernel_text_ro(void) pr_debug("Set kernel text: %lx - %lx for read only\n", start, end); + /* + * Set the kernel identity mapping for text RO. + */ set_memory_ro(start, (end - start) >> PAGE_SHIFT); } void mark_rodata_ro(void) { - unsigned long start = PFN_ALIGN(_stext), end = PFN_ALIGN(__end_rodata); + unsigned long start = PFN_ALIGN(_text); unsigned long rodata_start = ((unsigned long)__start_rodata + PAGE_SIZE - 1) & PAGE_MASK; + unsigned long end = (unsigned long) &__end_rodata_hpage_align; + unsigned long text_end = PAGE_ALIGN((unsigned long) &__stop___ex_table); + unsigned long rodata_end = PAGE_ALIGN((unsigned long) &__end_rodata); + unsigned long data_start = (unsigned long) &_sdata; printk(KERN_INFO "Write protecting the kernel read-only data: %luk\n", (end - start) >> 10); @@ -751,6 +764,14 @@ void mark_rodata_ro(void) printk(KERN_INFO "Testing CPA: again\n"); set_memory_ro(start, (end-start) >> PAGE_SHIFT); #endif + + free_init_pages("unused kernel memory", + (unsigned long) page_address(virt_to_page(text_end)), + (unsigned long) + page_address(virt_to_page(rodata_start))); + free_init_pages("unused kernel memory", + (unsigned long) page_address(virt_to_page(rodata_end)), + (unsigned long) page_address(virt_to_page(data_start))); } #endif diff --git a/arch/x86/mm/k8topology_64.c b/arch/x86/mm/k8topology_64.c index 268f8255280f..970ed579d4e4 100644 --- a/arch/x86/mm/k8topology_64.c +++ b/arch/x86/mm/k8topology_64.c @@ -24,6 +24,9 @@ #include <asm/apic.h> #include <asm/k8.h> +static struct bootnode __initdata nodes[8]; +static nodemask_t __initdata nodes_parsed = NODE_MASK_NONE; + static __init int find_northbridge(void) { int num; @@ -54,18 +57,6 @@ static __init void early_get_boot_cpu_id(void) * need to get boot_cpu_id so can use that to create apicid_to_node * in k8_scan_nodes() */ - /* - * Find possible boot-time SMP configuration: - */ -#ifdef CONFIG_X86_MPPARSE - early_find_smp_config(); -#endif -#ifdef CONFIG_ACPI - /* - * Read APIC information from ACPI tables. - */ - early_acpi_boot_init(); -#endif #ifdef CONFIG_X86_MPPARSE /* * get boot-time SMP configuration: @@ -76,12 +67,26 @@ static __init void early_get_boot_cpu_id(void) early_init_lapic_mapping(); } -int __init k8_scan_nodes(unsigned long start, unsigned long end) +int __init k8_get_nodes(struct bootnode *physnodes) { - unsigned numnodes, cores, bits, apicid_base; + int i; + int ret = 0; + + for_each_node_mask(i, nodes_parsed) { + physnodes[ret].start = nodes[i].start; + physnodes[ret].end = nodes[i].end; + ret++; + } + return ret; +} + +int __init k8_numa_init(unsigned long start_pfn, unsigned long end_pfn) +{ + unsigned long start = PFN_PHYS(start_pfn); + unsigned long end = PFN_PHYS(end_pfn); + unsigned numnodes; unsigned long prevbase; - struct bootnode nodes[8]; - int i, j, nb, found = 0; + int i, nb, found = 0; u32 nodeid, reg; if (!early_pci_allowed()) @@ -91,16 +96,15 @@ int __init k8_scan_nodes(unsigned long start, unsigned long end) if (nb < 0) return nb; - printk(KERN_INFO "Scanning NUMA topology in Northbridge %d\n", nb); + pr_info("Scanning NUMA topology in Northbridge %d\n", nb); reg = read_pci_config(0, nb, 0, 0x60); numnodes = ((reg >> 4) & 0xF) + 1; if (numnodes <= 1) return -1; - printk(KERN_INFO "Number of nodes %d\n", numnodes); + pr_info("Number of physical nodes %d\n", numnodes); - memset(&nodes, 0, sizeof(nodes)); prevbase = 0; for (i = 0; i < 8; i++) { unsigned long base, limit; @@ -111,28 +115,28 @@ int __init k8_scan_nodes(unsigned long start, unsigned long end) nodeid = limit & 7; if ((base & 3) == 0) { if (i < numnodes) - printk("Skipping disabled node %d\n", i); + pr_info("Skipping disabled node %d\n", i); continue; } if (nodeid >= numnodes) { - printk("Ignoring excess node %d (%lx:%lx)\n", nodeid, - base, limit); + pr_info("Ignoring excess node %d (%lx:%lx)\n", nodeid, + base, limit); continue; } if (!limit) { - printk(KERN_INFO "Skipping node entry %d (base %lx)\n", - i, base); + pr_info("Skipping node entry %d (base %lx)\n", + i, base); continue; } if ((base >> 8) & 3 || (limit >> 8) & 3) { - printk(KERN_ERR "Node %d using interleaving mode %lx/%lx\n", - nodeid, (base>>8)&3, (limit>>8) & 3); + pr_err("Node %d using interleaving mode %lx/%lx\n", + nodeid, (base >> 8) & 3, (limit >> 8) & 3); return -1; } - if (node_isset(nodeid, node_possible_map)) { - printk(KERN_INFO "Node %d already present. Skipping\n", - nodeid); + if (node_isset(nodeid, nodes_parsed)) { + pr_info("Node %d already present, skipping\n", + nodeid); continue; } @@ -141,8 +145,8 @@ int __init k8_scan_nodes(unsigned long start, unsigned long end) limit |= (1<<24)-1; limit++; - if (limit > max_pfn << PAGE_SHIFT) - limit = max_pfn << PAGE_SHIFT; + if (limit > end) + limit = end; if (limit <= base) continue; @@ -154,24 +158,24 @@ int __init k8_scan_nodes(unsigned long start, unsigned long end) if (limit > end) limit = end; if (limit == base) { - printk(KERN_ERR "Empty node %d\n", nodeid); + pr_err("Empty node %d\n", nodeid); continue; } if (limit < base) { - printk(KERN_ERR "Node %d bogus settings %lx-%lx.\n", + pr_err("Node %d bogus settings %lx-%lx.\n", nodeid, base, limit); continue; } /* Could sort here, but pun for now. Should not happen anyroads. */ if (prevbase > base) { - printk(KERN_ERR "Node map not sorted %lx,%lx\n", + pr_err("Node map not sorted %lx,%lx\n", prevbase, base); return -1; } - printk(KERN_INFO "Node %d MemBase %016lx Limit %016lx\n", - nodeid, base, limit); + pr_info("Node %d MemBase %016lx Limit %016lx\n", + nodeid, base, limit); found++; @@ -180,18 +184,29 @@ int __init k8_scan_nodes(unsigned long start, unsigned long end) prevbase = base; - node_set(nodeid, node_possible_map); + node_set(nodeid, nodes_parsed); } if (!found) return -1; + return 0; +} + +int __init k8_scan_nodes(void) +{ + unsigned int bits; + unsigned int cores; + unsigned int apicid_base; + int i; + BUG_ON(nodes_empty(nodes_parsed)); + node_possible_map = nodes_parsed; memnode_shift = compute_hash_shift(nodes, 8, NULL); if (memnode_shift < 0) { - printk(KERN_ERR "No NUMA node hash function found. Contact maintainer\n"); + pr_err("No NUMA node hash function found. Contact maintainer\n"); return -1; } - printk(KERN_INFO "Using node hash shift of %d\n", memnode_shift); + pr_info("Using node hash shift of %d\n", memnode_shift); /* use the coreid bits from early_identify_cpu */ bits = boot_cpu_data.x86_coreid_bits; @@ -200,14 +215,12 @@ int __init k8_scan_nodes(unsigned long start, unsigned long end) /* need to get boot_cpu_id early for system with apicid lifting */ early_get_boot_cpu_id(); if (boot_cpu_physical_apicid > 0) { - printk(KERN_INFO "BSP APIC ID: %02x\n", - boot_cpu_physical_apicid); + pr_info("BSP APIC ID: %02x\n", boot_cpu_physical_apicid); apicid_base = boot_cpu_physical_apicid; } - for (i = 0; i < 8; i++) { - if (nodes[i].start == nodes[i].end) - continue; + for_each_node_mask(i, node_possible_map) { + int j; e820_register_active_regions(i, nodes[i].start >> PAGE_SHIFT, diff --git a/arch/x86/mm/numa_32.c b/arch/x86/mm/numa_32.c index d2530062fe00..b20760ca7244 100644 --- a/arch/x86/mm/numa_32.c +++ b/arch/x86/mm/numa_32.c @@ -347,8 +347,8 @@ static void init_remap_allocator(int nid) (ulong) node_remap_end_vaddr[nid]); } -void __init initmem_init(unsigned long start_pfn, - unsigned long end_pfn) +void __init initmem_init(unsigned long start_pfn, unsigned long end_pfn, + int acpi, int k8) { int nid; long kva_target_pfn; diff --git a/arch/x86/mm/numa_64.c b/arch/x86/mm/numa_64.c index 459913beac71..83bbc70d11bb 100644 --- a/arch/x86/mm/numa_64.c +++ b/arch/x86/mm/numa_64.c @@ -239,8 +239,14 @@ setup_node_bootmem(int nodeid, unsigned long start, unsigned long end) bootmap = early_node_mem(nodeid, bootmap_start, end, bootmap_pages<<PAGE_SHIFT, PAGE_SIZE); if (bootmap == NULL) { - if (nodedata_phys < start || nodedata_phys >= end) - free_bootmem(nodedata_phys, pgdat_size); + if (nodedata_phys < start || nodedata_phys >= end) { + /* + * only need to free it if it is from other node + * bootmem + */ + if (nid != nodeid) + free_bootmem(nodedata_phys, pgdat_size); + } node_data[nodeid] = NULL; return; } @@ -306,8 +312,71 @@ void __init numa_init_array(void) #ifdef CONFIG_NUMA_EMU /* Numa emulation */ +static struct bootnode nodes[MAX_NUMNODES] __initdata; +static struct bootnode physnodes[MAX_NUMNODES] __initdata; static char *cmdline __initdata; +static int __init setup_physnodes(unsigned long start, unsigned long end, + int acpi, int k8) +{ + int nr_nodes = 0; + int ret = 0; + int i; + +#ifdef CONFIG_ACPI_NUMA + if (acpi) + nr_nodes = acpi_get_nodes(physnodes); +#endif +#ifdef CONFIG_K8_NUMA + if (k8) + nr_nodes = k8_get_nodes(physnodes); +#endif + /* + * Basic sanity checking on the physical node map: there may be errors + * if the SRAT or K8 incorrectly reported the topology or the mem= + * kernel parameter is used. + */ + for (i = 0; i < nr_nodes; i++) { + if (physnodes[i].start == physnodes[i].end) + continue; + if (physnodes[i].start > end) { + physnodes[i].end = physnodes[i].start; + continue; + } + if (physnodes[i].end < start) { + physnodes[i].start = physnodes[i].end; + continue; + } + if (physnodes[i].start < start) + physnodes[i].start = start; + if (physnodes[i].end > end) + physnodes[i].end = end; + } + + /* + * Remove all nodes that have no memory or were truncated because of the + * limited address range. + */ + for (i = 0; i < nr_nodes; i++) { + if (physnodes[i].start == physnodes[i].end) + continue; + physnodes[ret].start = physnodes[i].start; + physnodes[ret].end = physnodes[i].end; + ret++; + } + + /* + * If no physical topology was detected, a single node is faked to cover + * the entire address space. + */ + if (!ret) { + physnodes[ret].start = start; + physnodes[ret].end = end; + ret = 1; + } + return ret; +} + /* * Setups up nid to range from addr to addr + size. If the end * boundary is greater than max_addr, then max_addr is used instead. @@ -315,11 +384,9 @@ static char *cmdline __initdata; * allocation past addr and -1 otherwise. addr is adjusted to be at * the end of the node. */ -static int __init setup_node_range(int nid, struct bootnode *nodes, u64 *addr, - u64 size, u64 max_addr) +static int __init setup_node_range(int nid, u64 *addr, u64 size, u64 max_addr) { int ret = 0; - nodes[nid].start = *addr; *addr += size; if (*addr >= max_addr) { @@ -335,12 +402,111 @@ static int __init setup_node_range(int nid, struct bootnode *nodes, u64 *addr, } /* + * Sets up nr_nodes fake nodes interleaved over physical nodes ranging from addr + * to max_addr. The return value is the number of nodes allocated. + */ +static int __init split_nodes_interleave(u64 addr, u64 max_addr, + int nr_phys_nodes, int nr_nodes) +{ + nodemask_t physnode_mask = NODE_MASK_NONE; + u64 size; + int big; + int ret = 0; + int i; + + if (nr_nodes <= 0) + return -1; + if (nr_nodes > MAX_NUMNODES) { + pr_info("numa=fake=%d too large, reducing to %d\n", + nr_nodes, MAX_NUMNODES); + nr_nodes = MAX_NUMNODES; + } + + size = (max_addr - addr - e820_hole_size(addr, max_addr)) / nr_nodes; + /* + * Calculate the number of big nodes that can be allocated as a result + * of consolidating the remainder. + */ + big = ((size & ~FAKE_NODE_MIN_HASH_MASK) & nr_nodes) / + FAKE_NODE_MIN_SIZE; + + size &= FAKE_NODE_MIN_HASH_MASK; + if (!size) { + pr_err("Not enough memory for each node. " + "NUMA emulation disabled.\n"); + return -1; + } + + for (i = 0; i < nr_phys_nodes; i++) + if (physnodes[i].start != physnodes[i].end) + node_set(i, physnode_mask); + + /* + * Continue to fill physical nodes with fake nodes until there is no + * memory left on any of them. + */ + while (nodes_weight(physnode_mask)) { + for_each_node_mask(i, physnode_mask) { + u64 end = physnodes[i].start + size; + u64 dma32_end = PFN_PHYS(MAX_DMA32_PFN); + + if (ret < big) + end += FAKE_NODE_MIN_SIZE; + + /* + * Continue to add memory to this fake node if its + * non-reserved memory is less than the per-node size. + */ + while (end - physnodes[i].start - + e820_hole_size(physnodes[i].start, end) < size) { + end += FAKE_NODE_MIN_SIZE; + if (end > physnodes[i].end) { + end = physnodes[i].end; + break; + } + } + + /* + * If there won't be at least FAKE_NODE_MIN_SIZE of + * non-reserved memory in ZONE_DMA32 for the next node, + * this one must extend to the boundary. + */ + if (end < dma32_end && dma32_end - end - + e820_hole_size(end, dma32_end) < FAKE_NODE_MIN_SIZE) + end = dma32_end; + + /* + * If there won't be enough non-reserved memory for the + * next node, this one must extend to the end of the + * physical node. + */ + if (physnodes[i].end - end - + e820_hole_size(end, physnodes[i].end) < size) + end = physnodes[i].end; + + /* + * Avoid allocating more nodes than requested, which can + * happen as a result of rounding down each node's size + * to FAKE_NODE_MIN_SIZE. + */ + if (nodes_weight(physnode_mask) + ret >= nr_nodes) + end = physnodes[i].end; + + if (setup_node_range(ret++, &physnodes[i].start, + end - physnodes[i].start, + physnodes[i].end) < 0) + node_clear(i, physnode_mask); + } + } + return ret; +} + +/* * Splits num_nodes nodes up equally starting at node_start. The return value * is the number of nodes split up and addr is adjusted to be at the end of the * last node allocated. */ -static int __init split_nodes_equally(struct bootnode *nodes, u64 *addr, - u64 max_addr, int node_start, +static int __init split_nodes_equally(u64 *addr, u64 max_addr, int node_start, int num_nodes) { unsigned int big; @@ -388,7 +554,7 @@ static int __init split_nodes_equally(struct bootnode *nodes, u64 *addr, break; } } - if (setup_node_range(i, nodes, addr, end - *addr, max_addr) < 0) + if (setup_node_range(i, addr, end - *addr, max_addr) < 0) break; } return i - node_start + 1; @@ -399,12 +565,12 @@ static int __init split_nodes_equally(struct bootnode *nodes, u64 *addr, * always assigned to a final node and can be asymmetric. Returns the number of * nodes split. */ -static int __init split_nodes_by_size(struct bootnode *nodes, u64 *addr, - u64 max_addr, int node_start, u64 size) +static int __init split_nodes_by_size(u64 *addr, u64 max_addr, int node_start, + u64 size) { int i = node_start; size = (size << 20) & FAKE_NODE_MIN_HASH_MASK; - while (!setup_node_range(i++, nodes, addr, size, max_addr)) + while (!setup_node_range(i++, addr, size, max_addr)) ; return i - node_start; } @@ -413,15 +579,15 @@ static int __init split_nodes_by_size(struct bootnode *nodes, u64 *addr, * Sets up the system RAM area from start_pfn to last_pfn according to the * numa=fake command-line option. */ -static struct bootnode nodes[MAX_NUMNODES] __initdata; - -static int __init numa_emulation(unsigned long start_pfn, unsigned long last_pfn) +static int __init numa_emulation(unsigned long start_pfn, + unsigned long last_pfn, int acpi, int k8) { u64 size, addr = start_pfn << PAGE_SHIFT; u64 max_addr = last_pfn << PAGE_SHIFT; int num_nodes = 0, num = 0, coeff_flag, coeff = -1, i; + int num_phys_nodes; - memset(&nodes, 0, sizeof(nodes)); + num_phys_nodes = setup_physnodes(addr, max_addr, acpi, k8); /* * If the numa=fake command-line is just a single number N, split the * system RAM into N fake nodes. @@ -429,7 +595,8 @@ static int __init numa_emulation(unsigned long start_pfn, unsigned long last_pfn if (!strchr(cmdline, '*') && !strchr(cmdline, ',')) { long n = simple_strtol(cmdline, NULL, 0); - num_nodes = split_nodes_equally(nodes, &addr, max_addr, 0, n); + num_nodes = split_nodes_interleave(addr, max_addr, + num_phys_nodes, n); if (num_nodes < 0) return num_nodes; goto out; @@ -456,8 +623,8 @@ static int __init numa_emulation(unsigned long start_pfn, unsigned long last_pfn size = ((u64)num << 20) & FAKE_NODE_MIN_HASH_MASK; if (size) for (i = 0; i < coeff; i++, num_nodes++) - if (setup_node_range(num_nodes, nodes, - &addr, size, max_addr) < 0) + if (setup_node_range(num_nodes, &addr, + size, max_addr) < 0) goto done; if (!*cmdline) break; @@ -473,7 +640,7 @@ done: if (addr < max_addr) { if (coeff_flag && coeff < 0) { /* Split remaining nodes into num-sized chunks */ - num_nodes += split_nodes_by_size(nodes, &addr, max_addr, + num_nodes += split_nodes_by_size(&addr, max_addr, num_nodes, num); goto out; } @@ -482,7 +649,7 @@ done: /* Split remaining nodes into coeff chunks */ if (coeff <= 0) break; - num_nodes += split_nodes_equally(nodes, &addr, max_addr, + num_nodes += split_nodes_equally(&addr, max_addr, num_nodes, coeff); break; case ',': @@ -490,8 +657,8 @@ done: break; default: /* Give one final node */ - setup_node_range(num_nodes, nodes, &addr, - max_addr - addr, max_addr); + setup_node_range(num_nodes, &addr, max_addr - addr, + max_addr); num_nodes++; } } @@ -505,14 +672,10 @@ out: } /* - * We need to vacate all active ranges that may have been registered by - * SRAT and set acpi_numa to -1 so that srat_disabled() always returns - * true. NUMA emulation has succeeded so we will not scan ACPI nodes. + * We need to vacate all active ranges that may have been registered for + * the e820 memory map. */ remove_all_active_ranges(); -#ifdef CONFIG_ACPI_NUMA - acpi_numa = -1; -#endif for_each_node_mask(i, node_possible_map) { e820_register_active_regions(i, nodes[i].start >> PAGE_SHIFT, nodes[i].end >> PAGE_SHIFT); @@ -524,7 +687,8 @@ out: } #endif /* CONFIG_NUMA_EMU */ -void __init initmem_init(unsigned long start_pfn, unsigned long last_pfn) +void __init initmem_init(unsigned long start_pfn, unsigned long last_pfn, + int acpi, int k8) { int i; @@ -532,23 +696,22 @@ void __init initmem_init(unsigned long start_pfn, unsigned long last_pfn) nodes_clear(node_online_map); #ifdef CONFIG_NUMA_EMU - if (cmdline && !numa_emulation(start_pfn, last_pfn)) + if (cmdline && !numa_emulation(start_pfn, last_pfn, acpi, k8)) return; nodes_clear(node_possible_map); nodes_clear(node_online_map); #endif #ifdef CONFIG_ACPI_NUMA - if (!numa_off && !acpi_scan_nodes(start_pfn << PAGE_SHIFT, - last_pfn << PAGE_SHIFT)) + if (!numa_off && acpi && !acpi_scan_nodes(start_pfn << PAGE_SHIFT, + last_pfn << PAGE_SHIFT)) return; nodes_clear(node_possible_map); nodes_clear(node_online_map); #endif #ifdef CONFIG_K8_NUMA - if (!numa_off && !k8_scan_nodes(start_pfn<<PAGE_SHIFT, - last_pfn<<PAGE_SHIFT)) + if (!numa_off && k8 && !k8_scan_nodes()) return; nodes_clear(node_possible_map); nodes_clear(node_online_map); @@ -601,6 +764,25 @@ static __init int numa_setup(char *opt) early_param("numa", numa_setup); #ifdef CONFIG_NUMA + +static __init int find_near_online_node(int node) +{ + int n, val; + int min_val = INT_MAX; + int best_node = -1; + + for_each_online_node(n) { + val = node_distance(node, n); + + if (val < min_val) { + min_val = val; + best_node = n; + } + } + + return best_node; +} + /* * Setup early cpu_to_node. * @@ -632,7 +814,7 @@ void __init init_cpu_to_node(void) if (node == NUMA_NO_NODE) continue; if (!node_online(node)) - continue; + node = find_near_online_node(node); numa_set_node(cpu, node); } } diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c index dd38bfbefd1f..1d4eb93d333c 100644 --- a/arch/x86/mm/pageattr.c +++ b/arch/x86/mm/pageattr.c @@ -279,6 +279,22 @@ static inline pgprot_t static_protections(pgprot_t prot, unsigned long address, __pa((unsigned long)__end_rodata) >> PAGE_SHIFT)) pgprot_val(forbidden) |= _PAGE_RW; +#if defined(CONFIG_X86_64) && defined(CONFIG_DEBUG_RODATA) + /* + * Once the kernel maps the text as RO (kernel_set_to_readonly is set), + * kernel text mappings for the large page aligned text, rodata sections + * will be always read-only. For the kernel identity mappings covering + * the holes caused by this alignment can be anything that user asks. + * + * This will preserve the large page mappings for kernel text/data + * at no extra cost. + */ + if (kernel_set_to_readonly && + within(address, (unsigned long)_text, + (unsigned long)__end_rodata_hpage_align)) + pgprot_val(forbidden) |= _PAGE_RW; +#endif + prot = __pgprot(pgprot_val(prot) & ~pgprot_val(forbidden)); return prot; @@ -1069,12 +1085,18 @@ EXPORT_SYMBOL(set_memory_array_wb); int set_memory_x(unsigned long addr, int numpages) { + if (!(__supported_pte_mask & _PAGE_NX)) + return 0; + return change_page_attr_clear(&addr, numpages, __pgprot(_PAGE_NX), 0); } EXPORT_SYMBOL(set_memory_x); int set_memory_nx(unsigned long addr, int numpages) { + if (!(__supported_pte_mask & _PAGE_NX)) + return 0; + return change_page_attr_set(&addr, numpages, __pgprot(_PAGE_NX), 0); } EXPORT_SYMBOL(set_memory_nx); diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c index e78cd0ec2bcf..a81b7e73275d 100644 --- a/arch/x86/mm/pat.c +++ b/arch/x86/mm/pat.c @@ -20,6 +20,7 @@ #include <asm/cacheflush.h> #include <asm/processor.h> #include <asm/tlbflush.h> +#include <asm/x86_init.h> #include <asm/pgtable.h> #include <asm/fcntl.h> #include <asm/e820.h> @@ -388,7 +389,7 @@ int reserve_memtype(u64 start, u64 end, unsigned long req_type, } /* Low ISA region is always mapped WB in page table. No need to track */ - if (is_ISA_range(start, end - 1)) { + if (x86_platform.is_untracked_pat_range(start, end)) { if (new_type) *new_type = _PAGE_CACHE_WB; return 0; @@ -499,7 +500,7 @@ int free_memtype(u64 start, u64 end) return 0; /* Low ISA region is always mapped WB. No need to track */ - if (is_ISA_range(start, end - 1)) + if (x86_platform.is_untracked_pat_range(start, end)) return 0; is_range_ram = pat_pagerange_is_ram(start, end); @@ -582,7 +583,7 @@ static unsigned long lookup_memtype(u64 paddr) int rettype = _PAGE_CACHE_WB; struct memtype *entry; - if (is_ISA_range(paddr, paddr + PAGE_SIZE - 1)) + if (x86_platform.is_untracked_pat_range(paddr, paddr + PAGE_SIZE)) return rettype; if (pat_pagerange_is_ram(paddr, paddr + PAGE_SIZE)) { @@ -1018,8 +1019,10 @@ static const struct file_operations memtype_fops = { static int __init pat_memtype_list_init(void) { - debugfs_create_file("pat_memtype_list", S_IRUSR, arch_debugfs_dir, - NULL, &memtype_fops); + if (pat_enabled) { + debugfs_create_file("pat_memtype_list", S_IRUSR, + arch_debugfs_dir, NULL, &memtype_fops); + } return 0; } diff --git a/arch/x86/mm/setup_nx.c b/arch/x86/mm/setup_nx.c index 513d8ed5d2ec..a3250aa34086 100644 --- a/arch/x86/mm/setup_nx.c +++ b/arch/x86/mm/setup_nx.c @@ -3,10 +3,8 @@ #include <linux/init.h> #include <asm/pgtable.h> +#include <asm/proto.h> -int nx_enabled; - -#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE) static int disable_nx __cpuinitdata; /* @@ -22,48 +20,41 @@ static int __init noexec_setup(char *str) if (!str) return -EINVAL; if (!strncmp(str, "on", 2)) { - __supported_pte_mask |= _PAGE_NX; disable_nx = 0; } else if (!strncmp(str, "off", 3)) { disable_nx = 1; - __supported_pte_mask &= ~_PAGE_NX; } + x86_configure_nx(); return 0; } early_param("noexec", noexec_setup); -#endif -#ifdef CONFIG_X86_PAE -void __init set_nx(void) +void __cpuinit x86_configure_nx(void) { - unsigned int v[4], l, h; - - if (cpu_has_pae && (cpuid_eax(0x80000000) > 0x80000001)) { - cpuid(0x80000001, &v[0], &v[1], &v[2], &v[3]); + if (cpu_has_nx && !disable_nx) + __supported_pte_mask |= _PAGE_NX; + else + __supported_pte_mask &= ~_PAGE_NX; +} - if ((v[3] & (1 << 20)) && !disable_nx) { - rdmsr(MSR_EFER, l, h); - l |= EFER_NX; - wrmsr(MSR_EFER, l, h); - nx_enabled = 1; - __supported_pte_mask |= _PAGE_NX; +void __init x86_report_nx(void) +{ + if (!cpu_has_nx) { + printk(KERN_NOTICE "Notice: NX (Execute Disable) protection " + "missing in CPU or disabled in BIOS!\n"); + } else { +#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE) + if (disable_nx) { + printk(KERN_INFO "NX (Execute Disable) protection: " + "disabled by kernel command line option\n"); + } else { + printk(KERN_INFO "NX (Execute Disable) protection: " + "active\n"); } - } -} #else -void set_nx(void) -{ -} + /* 32bit non-PAE kernel, NX cannot be used */ + printk(KERN_NOTICE "Notice: NX (Execute Disable) protection " + "cannot be enabled: non-PAE kernel!\n"); #endif - -#ifdef CONFIG_X86_64 -void __cpuinit check_efer(void) -{ - unsigned long efer; - - rdmsrl(MSR_EFER, efer); - if (!(efer & EFER_NX) || disable_nx) - __supported_pte_mask &= ~_PAGE_NX; + } } -#endif - diff --git a/arch/x86/mm/srat_64.c b/arch/x86/mm/srat_64.c index 9d7ce96e5a5c..d89075489664 100644 --- a/arch/x86/mm/srat_64.c +++ b/arch/x86/mm/srat_64.c @@ -290,8 +290,6 @@ acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma) printk(KERN_INFO "SRAT: Node %u PXM %u %lx-%lx\n", node, pxm, start, end); - e820_register_active_regions(node, start >> PAGE_SHIFT, - end >> PAGE_SHIFT); if (ma->flags & ACPI_SRAT_MEM_HOT_PLUGGABLE) { update_nodes_add(node, start, end); @@ -338,6 +336,19 @@ static int __init nodes_cover_memory(const struct bootnode *nodes) void __init acpi_numa_arch_fixup(void) {} +int __init acpi_get_nodes(struct bootnode *physnodes) +{ + int i; + int ret = 0; + + for_each_node_mask(i, nodes_parsed) { + physnodes[ret].start = nodes[i].start; + physnodes[ret].end = nodes[i].end; + ret++; + } + return ret; +} + /* Use the information discovered above to actually set up the nodes. */ int __init acpi_scan_nodes(unsigned long start, unsigned long end) { @@ -350,11 +361,6 @@ int __init acpi_scan_nodes(unsigned long start, unsigned long end) for (i = 0; i < MAX_NUMNODES; i++) cutoff_node(i, start, end); - if (!nodes_cover_memory(nodes)) { - bad_srat(); - return -1; - } - memnode_shift = compute_hash_shift(node_memblk_range, num_node_memblks, memblk_nodeid); if (memnode_shift < 0) { @@ -364,6 +370,14 @@ int __init acpi_scan_nodes(unsigned long start, unsigned long end) return -1; } + for_each_node_mask(i, nodes_parsed) + e820_register_active_regions(i, nodes[i].start >> PAGE_SHIFT, + nodes[i].end >> PAGE_SHIFT); + if (!nodes_cover_memory(nodes)) { + bad_srat(); + return -1; + } + /* Account for nodes with cpus and no memory */ nodes_or(node_possible_map, nodes_parsed, cpu_nodes_parsed); @@ -454,7 +468,6 @@ void __init acpi_fake_nodes(const struct bootnode *fake_nodes, int num_nodes) for (i = 0; i < num_nodes; i++) if (fake_nodes[i].start != fake_nodes[i].end) node_set(i, nodes_parsed); - WARN_ON(!nodes_cover_memory(fake_nodes)); } static int null_slit_node_compare(int a, int b) diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c index 36fe08eeb5c3..65b58e4b0b8b 100644 --- a/arch/x86/mm/tlb.c +++ b/arch/x86/mm/tlb.c @@ -8,6 +8,7 @@ #include <asm/tlbflush.h> #include <asm/mmu_context.h> +#include <asm/cache.h> #include <asm/apic.h> #include <asm/uv/uv.h> @@ -43,7 +44,7 @@ union smp_flush_state { spinlock_t tlbstate_lock; DECLARE_BITMAP(flush_cpumask, NR_CPUS); }; - char pad[CONFIG_X86_INTERNODE_CACHE_BYTES]; + char pad[INTERNODE_CACHE_BYTES]; } ____cacheline_internodealigned_in_smp; /* State is put into the per CPU data section, but padded diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index dfbf70e65860..c462cea8ef09 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -1093,10 +1093,8 @@ asmlinkage void __init xen_start_kernel(void) __supported_pte_mask |= _PAGE_IOMAP; -#ifdef CONFIG_X86_64 /* Work out if we support NX */ - check_efer(); -#endif + x86_configure_nx(); xen_setup_features(); |
