diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/i386/kernel/vmi.c | 23 | ||||
| -rw-r--r-- | arch/i386/mm/highmem.c | 2 |
2 files changed, 24 insertions, 1 deletions
diff --git a/arch/i386/kernel/vmi.c b/arch/i386/kernel/vmi.c index fb07a1aad225..edc339fa5038 100644 --- a/arch/i386/kernel/vmi.c +++ b/arch/i386/kernel/vmi.c @@ -69,6 +69,7 @@ struct { void (*flush_tlb)(int); void (*set_initial_ap_state)(int, int); void (*halt)(void); + void (*set_lazy_mode)(int mode); } vmi_ops; /* XXX move this to alternative.h */ @@ -574,6 +575,26 @@ vmi_startup_ipi_hook(int phys_apicid, unsigned long start_eip, } #endif +static void vmi_set_lazy_mode(int mode) +{ + static DEFINE_PER_CPU(int, lazy_mode); + + if (!vmi_ops.set_lazy_mode) + return; + + /* Modes should never nest or overlap */ + BUG_ON(__get_cpu_var(lazy_mode) && !(mode == PARAVIRT_LAZY_NONE || + mode == PARAVIRT_LAZY_FLUSH)); + + if (mode == PARAVIRT_LAZY_FLUSH) { + vmi_ops.set_lazy_mode(0); + vmi_ops.set_lazy_mode(__get_cpu_var(lazy_mode)); + } else { + vmi_ops.set_lazy_mode(mode); + __get_cpu_var(lazy_mode) = mode; + } +} + static inline int __init check_vmi_rom(struct vrom_header *rom) { struct pci_header *pci; @@ -804,7 +825,7 @@ static inline int __init activate_vmi(void) para_wrap(load_esp0, vmi_load_esp0, set_kernel_stack, UpdateKernelStack); para_fill(set_iopl_mask, SetIOPLMask); para_fill(io_delay, IODelay); - para_fill(set_lazy_mode, SetLazyMode); + para_wrap(set_lazy_mode, vmi_set_lazy_mode, set_lazy_mode, SetLazyMode); /* user and kernel flush are just handled with different flags to FlushTLB */ para_wrap(flush_tlb_user, vmi_flush_tlb_user, flush_tlb, FlushTLB); diff --git a/arch/i386/mm/highmem.c b/arch/i386/mm/highmem.c index bb2de1089add..ac70d09df7ee 100644 --- a/arch/i386/mm/highmem.c +++ b/arch/i386/mm/highmem.c @@ -42,6 +42,7 @@ void *kmap_atomic(struct page *page, enum km_type type) vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx); set_pte(kmap_pte-idx, mk_pte(page, kmap_prot)); + arch_flush_lazy_mmu_mode(); return (void*) vaddr; } @@ -82,6 +83,7 @@ void *kmap_atomic_pfn(unsigned long pfn, enum km_type type) idx = type + KM_TYPE_NR*smp_processor_id(); vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx); set_pte(kmap_pte-idx, pfn_pte(pfn, kmap_prot)); + arch_flush_lazy_mmu_mode(); return (void*) vaddr; } |