diff options
Diffstat (limited to 'arch/x86/xen')
| -rw-r--r-- | arch/x86/xen/enlighten.c | 6 | ||||
| -rw-r--r-- | arch/x86/xen/mmu.c | 4 | ||||
| -rw-r--r-- | arch/x86/xen/pci-swiotlb-xen.c | 4 | ||||
| -rw-r--r-- | arch/x86/xen/smp.c | 17 | ||||
| -rw-r--r-- | arch/x86/xen/xen-asm.S | 2 |
5 files changed, 25 insertions, 8 deletions
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index b132ade26f77..a8f8844b8d32 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -261,7 +261,8 @@ static void xen_cpuid(unsigned int *ax, unsigned int *bx, static bool __init xen_check_mwait(void) { -#ifdef CONFIG_ACPI +#if defined(CONFIG_ACPI) && !defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR) && \ + !defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR_MODULE) struct xen_platform_op op = { .cmd = XENPF_set_processor_pminfo, .u.set_pminfo.id = -1, @@ -349,7 +350,6 @@ static void __init xen_init_cpuid_mask(void) /* Xen will set CR4.OSXSAVE if supported and not disabled by force */ if ((cx & xsave_mask) != xsave_mask) cpuid_leaf1_ecx_mask &= ~xsave_mask; /* disable XSAVE & OSXSAVE */ - if (xen_check_mwait()) cpuid_leaf1_ecx_set_mask = (1 << (X86_FEATURE_MWAIT % 32)); } @@ -967,7 +967,7 @@ void xen_setup_shared_info(void) xen_setup_mfn_list_list(); } -/* This is called once we have the cpu_possible_map */ +/* This is called once we have the cpu_possible_mask */ void xen_setup_vcpu_info_placement(void) { int cpu; diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index 988828b479ed..b8e279479a6b 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -1859,6 +1859,7 @@ pgd_t * __init xen_setup_kernel_pagetable(pgd_t *pgd, #endif /* CONFIG_X86_64 */ static unsigned char dummy_mapping[PAGE_SIZE] __page_aligned_bss; +static unsigned char fake_ioapic_mapping[PAGE_SIZE] __page_aligned_bss; static void xen_set_fixmap(unsigned idx, phys_addr_t phys, pgprot_t prot) { @@ -1899,7 +1900,7 @@ static void xen_set_fixmap(unsigned idx, phys_addr_t phys, pgprot_t prot) * We just don't map the IO APIC - all access is via * hypercalls. Keep the address in the pte for reference. */ - pte = pfn_pte(PFN_DOWN(__pa(dummy_mapping)), PAGE_KERNEL); + pte = pfn_pte(PFN_DOWN(__pa(fake_ioapic_mapping)), PAGE_KERNEL); break; #endif @@ -2064,6 +2065,7 @@ void __init xen_init_mmu_ops(void) pv_mmu_ops = xen_mmu_ops; memset(dummy_mapping, 0xff, PAGE_SIZE); + memset(fake_ioapic_mapping, 0xfd, PAGE_SIZE); } /* Protected by xen_reservation_lock. */ diff --git a/arch/x86/xen/pci-swiotlb-xen.c b/arch/x86/xen/pci-swiotlb-xen.c index b480d4207a4c..967633ad98c4 100644 --- a/arch/x86/xen/pci-swiotlb-xen.c +++ b/arch/x86/xen/pci-swiotlb-xen.c @@ -12,8 +12,8 @@ int xen_swiotlb __read_mostly; static struct dma_map_ops xen_swiotlb_dma_ops = { .mapping_error = xen_swiotlb_dma_mapping_error, - .alloc_coherent = xen_swiotlb_alloc_coherent, - .free_coherent = xen_swiotlb_free_coherent, + .alloc = xen_swiotlb_alloc_coherent, + .free = xen_swiotlb_free_coherent, .sync_single_for_cpu = xen_swiotlb_sync_single_for_cpu, .sync_single_for_device = xen_swiotlb_sync_single_for_device, .sync_sg_for_cpu = xen_swiotlb_sync_sg_for_cpu, diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c index 02900e8ce26c..0503c0c493a9 100644 --- a/arch/x86/xen/smp.c +++ b/arch/x86/xen/smp.c @@ -59,7 +59,7 @@ static irqreturn_t xen_reschedule_interrupt(int irq, void *dev_id) static void __cpuinit cpu_bringup(void) { - int cpu = smp_processor_id(); + int cpu; cpu_init(); touch_softlockup_watchdog(); @@ -178,6 +178,7 @@ static void __init xen_fill_possible_map(void) static void __init xen_filter_cpu_maps(void) { int i, rc; + unsigned int subtract = 0; if (!xen_initial_domain()) return; @@ -192,8 +193,22 @@ static void __init xen_filter_cpu_maps(void) } else { set_cpu_possible(i, false); set_cpu_present(i, false); + subtract++; } } +#ifdef CONFIG_HOTPLUG_CPU + /* This is akin to using 'nr_cpus' on the Linux command line. + * Which is OK as when we use 'dom0_max_vcpus=X' we can only + * have up to X, while nr_cpu_ids is greater than X. This + * normally is not a problem, except when CPU hotplugging + * is involved and then there might be more than X CPUs + * in the guest - which will not work as there is no + * hypercall to expand the max number of VCPUs an already + * running guest has. So cap it up to X. */ + if (subtract) + nr_cpu_ids = nr_cpu_ids - subtract; +#endif + } static void __init xen_smp_prepare_boot_cpu(void) diff --git a/arch/x86/xen/xen-asm.S b/arch/x86/xen/xen-asm.S index 79d7362ad6d1..3e45aa000718 100644 --- a/arch/x86/xen/xen-asm.S +++ b/arch/x86/xen/xen-asm.S @@ -96,7 +96,7 @@ ENTRY(xen_restore_fl_direct) /* check for unmasked and pending */ cmpw $0x0001, PER_CPU_VAR(xen_vcpu_info) + XEN_vcpu_info_pending - jz 1f + jnz 1f 2: call check_events 1: ENDPATCH(xen_restore_fl_direct) |
