diff options
Diffstat (limited to 'arch/x86/platform')
| -rw-r--r-- | arch/x86/platform/efi/efi-bgrt.c | 9 | ||||
| -rw-r--r-- | arch/x86/platform/efi/efi.c | 95 | ||||
| -rw-r--r-- | arch/x86/platform/intel-mid/intel-mid.c | 2 | ||||
| -rw-r--r-- | arch/x86/platform/intel-mid/sfi.c | 3 | ||||
| -rw-r--r-- | arch/x86/platform/uv/uv_nmi.c | 53 |
5 files changed, 109 insertions, 53 deletions
diff --git a/arch/x86/platform/efi/efi-bgrt.c b/arch/x86/platform/efi/efi-bgrt.c index d7f997f7c26d..ea48449b2e63 100644 --- a/arch/x86/platform/efi/efi-bgrt.c +++ b/arch/x86/platform/efi/efi-bgrt.c @@ -50,11 +50,16 @@ void __init efi_bgrt_init(void) bgrt_tab->version); return; } - if (bgrt_tab->status != 1) { - pr_err("Ignoring BGRT: invalid status %u (expected 1)\n", + if (bgrt_tab->status & 0xfe) { + pr_err("Ignoring BGRT: reserved status bits are non-zero %u\n", bgrt_tab->status); return; } + if (bgrt_tab->status != 1) { + pr_debug("Ignoring BGRT: invalid status %u (expected 1)\n", + bgrt_tab->status); + return; + } if (bgrt_tab->image_type != 0) { pr_err("Ignoring BGRT: invalid image type %u (expected 0)\n", bgrt_tab->image_type); diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c index 1db84c0758b7..ad285404ea7f 100644 --- a/arch/x86/platform/efi/efi.c +++ b/arch/x86/platform/efi/efi.c @@ -194,7 +194,7 @@ static void __init do_add_efi_memmap(void) int __init efi_memblock_x86_reserve_range(void) { struct efi_info *e = &boot_params.efi_info; - unsigned long pmap; + phys_addr_t pmap; if (efi_enabled(EFI_PARAVIRT)) return 0; @@ -209,7 +209,7 @@ int __init efi_memblock_x86_reserve_range(void) #else pmap = (e->efi_memmap | ((__u64)e->efi_memmap_hi << 32)); #endif - memmap.phys_map = (void *)pmap; + memmap.phys_map = pmap; memmap.nr_map = e->efi_memmap_size / e->efi_memdesc_size; memmap.desc_size = e->efi_memdesc_size; @@ -222,7 +222,7 @@ int __init efi_memblock_x86_reserve_range(void) return 0; } -static void __init print_efi_memmap(void) +void __init efi_print_memmap(void) { #ifdef EFI_DEBUG efi_memory_desc_t *md; @@ -524,7 +524,7 @@ void __init efi_init(void) return; if (efi_enabled(EFI_DBG)) - print_efi_memmap(); + efi_print_memmap(); efi_esrt_init(); } @@ -705,6 +705,70 @@ out: } /* + * Iterate the EFI memory map in reverse order because the regions + * will be mapped top-down. The end result is the same as if we had + * mapped things forward, but doesn't require us to change the + * existing implementation of efi_map_region(). + */ +static inline void *efi_map_next_entry_reverse(void *entry) +{ + /* Initial call */ + if (!entry) + return memmap.map_end - memmap.desc_size; + + entry -= memmap.desc_size; + if (entry < memmap.map) + return NULL; + + return entry; +} + +/* + * efi_map_next_entry - Return the next EFI memory map descriptor + * @entry: Previous EFI memory map descriptor + * + * This is a helper function to iterate over the EFI memory map, which + * we do in different orders depending on the current configuration. + * + * To begin traversing the memory map @entry must be %NULL. + * + * Returns %NULL when we reach the end of the memory map. + */ +static void *efi_map_next_entry(void *entry) +{ + if (!efi_enabled(EFI_OLD_MEMMAP) && efi_enabled(EFI_64BIT)) { + /* + * Starting in UEFI v2.5 the EFI_PROPERTIES_TABLE + * config table feature requires us to map all entries + * in the same order as they appear in the EFI memory + * map. That is to say, entry N must have a lower + * virtual address than entry N+1. This is because the + * firmware toolchain leaves relative references in + * the code/data sections, which are split and become + * separate EFI memory regions. Mapping things + * out-of-order leads to the firmware accessing + * unmapped addresses. + * + * Since we need to map things this way whether or not + * the kernel actually makes use of + * EFI_PROPERTIES_TABLE, let's just switch to this + * scheme by default for 64-bit. + */ + return efi_map_next_entry_reverse(entry); + } + + /* Initial call */ + if (!entry) + return memmap.map; + + entry += memmap.desc_size; + if (entry >= memmap.map_end) + return NULL; + + return entry; +} + +/* * Map the efi memory ranges of the runtime services and update new_mmap with * virtual addresses. */ @@ -714,7 +778,8 @@ static void * __init efi_map_regions(int *count, int *pg_shift) unsigned long left = 0; efi_memory_desc_t *md; - for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) { + p = NULL; + while ((p = efi_map_next_entry(p))) { md = p; if (!(md->attribute & EFI_MEMORY_RUNTIME)) { #ifdef CONFIG_X86_64 @@ -952,24 +1017,6 @@ u32 efi_mem_type(unsigned long phys_addr) return 0; } -u64 efi_mem_attributes(unsigned long phys_addr) -{ - efi_memory_desc_t *md; - void *p; - - if (!efi_enabled(EFI_MEMMAP)) - return 0; - - for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) { - md = p; - if ((md->phys_addr <= phys_addr) && - (phys_addr < (md->phys_addr + - (md->num_pages << EFI_PAGE_SHIFT)))) - return md->attribute; - } - return 0; -} - static int __init arch_parse_efi_cmdline(char *str) { if (!str) { @@ -979,8 +1026,6 @@ static int __init arch_parse_efi_cmdline(char *str) if (parse_option_str(str, "old_map")) set_bit(EFI_OLD_MEMMAP, &efi.flags); - if (parse_option_str(str, "debug")) - set_bit(EFI_DBG, &efi.flags); return 0; } diff --git a/arch/x86/platform/intel-mid/intel-mid.c b/arch/x86/platform/intel-mid/intel-mid.c index 01d54ea766c1..1bbc21e2e4ae 100644 --- a/arch/x86/platform/intel-mid/intel-mid.c +++ b/arch/x86/platform/intel-mid/intel-mid.c @@ -61,7 +61,7 @@ enum intel_mid_timer_options intel_mid_timer_options; /* intel_mid_ops to store sub arch ops */ -struct intel_mid_ops *intel_mid_ops; +static struct intel_mid_ops *intel_mid_ops; /* getter function for sub arch ops*/ static void *(*get_intel_mid_ops[])(void) = INTEL_MID_OPS_INIT; enum intel_mid_cpu_type __intel_mid_cpu_chip; diff --git a/arch/x86/platform/intel-mid/sfi.c b/arch/x86/platform/intel-mid/sfi.c index ce992e8cc065..5ee360a951ce 100644 --- a/arch/x86/platform/intel-mid/sfi.c +++ b/arch/x86/platform/intel-mid/sfi.c @@ -197,10 +197,9 @@ static int __init sfi_parse_gpio(struct sfi_table_header *table) num = SFI_GET_NUM_ENTRIES(sb, struct sfi_gpio_table_entry); pentry = (struct sfi_gpio_table_entry *)sb->pentry; - gpio_table = kmalloc(num * sizeof(*pentry), GFP_KERNEL); + gpio_table = kmemdup(pentry, num * sizeof(*pentry), GFP_KERNEL); if (!gpio_table) return -1; - memcpy(gpio_table, pentry, num * sizeof(*pentry)); gpio_num_entry = num; pr_debug("GPIO pin info:\n"); diff --git a/arch/x86/platform/uv/uv_nmi.c b/arch/x86/platform/uv/uv_nmi.c index 5c9f63fa6abf..327f21c3bde1 100644 --- a/arch/x86/platform/uv/uv_nmi.c +++ b/arch/x86/platform/uv/uv_nmi.c @@ -376,38 +376,42 @@ static void uv_nmi_wait(int master) atomic_read(&uv_nmi_cpus_in_nmi), num_online_cpus()); } +/* Dump Instruction Pointer header */ static void uv_nmi_dump_cpu_ip_hdr(void) { - printk(KERN_DEFAULT - "\nUV: %4s %6s %-32s %s (Note: PID 0 not listed)\n", + pr_info("\nUV: %4s %6s %-32s %s (Note: PID 0 not listed)\n", "CPU", "PID", "COMMAND", "IP"); } +/* Dump Instruction Pointer info */ static void uv_nmi_dump_cpu_ip(int cpu, struct pt_regs *regs) { - printk(KERN_DEFAULT "UV: %4d %6d %-32.32s ", - cpu, current->pid, current->comm); - + pr_info("UV: %4d %6d %-32.32s ", cpu, current->pid, current->comm); printk_address(regs->ip); } -/* Dump this cpu's state */ +/* + * Dump this CPU's state. If action was set to "kdump" and the crash_kexec + * failed, then we provide "dump" as an alternate action. Action "dump" now + * also includes the show "ips" (instruction pointers) action whereas the + * action "ips" only displays instruction pointers for the non-idle CPU's. + * This is an abbreviated form of the "ps" command. + */ static void uv_nmi_dump_state_cpu(int cpu, struct pt_regs *regs) { const char *dots = " ................................. "; - if (uv_nmi_action_is("ips")) { - if (cpu == 0) - uv_nmi_dump_cpu_ip_hdr(); + if (cpu == 0) + uv_nmi_dump_cpu_ip_hdr(); - if (current->pid != 0) - uv_nmi_dump_cpu_ip(cpu, regs); + if (current->pid != 0 || !uv_nmi_action_is("ips")) + uv_nmi_dump_cpu_ip(cpu, regs); - } else if (uv_nmi_action_is("dump")) { - printk(KERN_DEFAULT - "UV:%sNMI process trace for CPU %d\n", dots, cpu); + if (uv_nmi_action_is("dump")) { + pr_info("UV:%sNMI process trace for CPU %d\n", dots, cpu); show_regs(regs); } + this_cpu_write(uv_cpu_nmi.state, UV_NMI_STATE_DUMP_DONE); } @@ -469,8 +473,7 @@ static void uv_nmi_dump_state(int cpu, struct pt_regs *regs, int master) uv_nmi_trigger_dump(tcpu); } if (ignored) - printk(KERN_DEFAULT "UV: %d CPUs ignored NMI\n", - ignored); + pr_alert("UV: %d CPUs ignored NMI\n", ignored); console_loglevel = saved_console_loglevel; pr_alert("UV: process trace complete\n"); @@ -492,8 +495,9 @@ static void uv_nmi_touch_watchdogs(void) touch_nmi_watchdog(); } -#if defined(CONFIG_KEXEC_CORE) static atomic_t uv_nmi_kexec_failed; + +#if defined(CONFIG_KEXEC_CORE) static void uv_nmi_kdump(int cpu, int master, struct pt_regs *regs) { /* Call crash to dump system state */ @@ -502,10 +506,9 @@ static void uv_nmi_kdump(int cpu, int master, struct pt_regs *regs) crash_kexec(regs); pr_emerg("UV: crash_kexec unexpectedly returned, "); + atomic_set(&uv_nmi_kexec_failed, 1); if (!kexec_crash_image) { pr_cont("crash kernel not loaded\n"); - atomic_set(&uv_nmi_kexec_failed, 1); - uv_nmi_sync_exit(1); return; } pr_cont("kexec busy, stalling cpus while waiting\n"); @@ -514,9 +517,6 @@ static void uv_nmi_kdump(int cpu, int master, struct pt_regs *regs) /* If crash exec fails the slaves should return, otherwise stall */ while (atomic_read(&uv_nmi_kexec_failed) == 0) mdelay(10); - - /* Crash kernel most likely not loaded, return in an orderly fashion */ - uv_nmi_sync_exit(0); } #else /* !CONFIG_KEXEC_CORE */ @@ -524,6 +524,7 @@ static inline void uv_nmi_kdump(int cpu, int master, struct pt_regs *regs) { if (master) pr_err("UV: NMI kdump: KEXEC not supported in this kernel\n"); + atomic_set(&uv_nmi_kexec_failed, 1); } #endif /* !CONFIG_KEXEC_CORE */ @@ -613,9 +614,14 @@ int uv_handle_nmi(unsigned int reason, struct pt_regs *regs) master = (atomic_read(&uv_nmi_cpu) == cpu); /* If NMI action is "kdump", then attempt to do it */ - if (uv_nmi_action_is("kdump")) + if (uv_nmi_action_is("kdump")) { uv_nmi_kdump(cpu, master, regs); + /* Unexpected return, revert action to "dump" */ + if (master) + strncpy(uv_nmi_action, "dump", strlen(uv_nmi_action)); + } + /* Pause as all cpus enter the NMI handler */ uv_nmi_wait(master); @@ -640,6 +646,7 @@ int uv_handle_nmi(unsigned int reason, struct pt_regs *regs) atomic_set(&uv_nmi_cpus_in_nmi, -1); atomic_set(&uv_nmi_cpu, -1); atomic_set(&uv_in_nmi, 0); + atomic_set(&uv_nmi_kexec_failed, 0); } uv_nmi_touch_watchdogs(); |
