diff options
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/Kconfig | 4 | ||||
| -rw-r--r-- | arch/x86/kernel/efi.c | 4 | ||||
| -rw-r--r-- | arch/x86/kernel/pci-gart_64.c | 9 | ||||
| -rw-r--r-- | arch/x86/kernel/test_rodata.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/traps_64.c | 4 | ||||
| -rw-r--r-- | arch/x86/mm/fault.c | 2 | ||||
| -rw-r--r-- | arch/x86/mm/init_32.c | 1 | ||||
| -rw-r--r-- | arch/x86/mm/init_64.c | 1 | ||||
| -rw-r--r-- | arch/x86/mm/pageattr.c | 17 |
9 files changed, 34 insertions, 10 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index aaed1a3b92d6..3be2305709b7 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -21,6 +21,8 @@ config X86 select HAVE_IDE select HAVE_OPROFILE select HAVE_KPROBES + select HAVE_KVM + config GENERIC_LOCKBREAK def_bool n @@ -119,8 +121,6 @@ config ARCH_HAS_CPU_RELAX config HAVE_SETUP_PER_CPU_AREA def_bool X86_64 -select HAVE_KVM - config ARCH_HIBERNATION_POSSIBLE def_bool y depends on !SMP || !X86_VOYAGER diff --git a/arch/x86/kernel/efi.c b/arch/x86/kernel/efi.c index cbdf9bacc575..0c0eeb163d90 100644 --- a/arch/x86/kernel/efi.c +++ b/arch/x86/kernel/efi.c @@ -391,7 +391,7 @@ static void __init runtime_code_page_mkexec(void) if (md->type != EFI_RUNTIME_SERVICES_CODE) continue; - set_memory_x(md->virt_addr, md->num_pages << EFI_PAGE_SHIFT); + set_memory_x(md->virt_addr, md->num_pages); } } @@ -434,7 +434,7 @@ void __init efi_enter_virtual_mode(void) } if (!(md->attribute & EFI_MEMORY_WB)) - set_memory_uc(md->virt_addr, size); + set_memory_uc(md->virt_addr, md->num_pages); systab = (u64) (unsigned long) efi_phys.systab; if (md->phys_addr <= systab && systab < end) { diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c index 65f6acb025c8..faf3229f8fb3 100644 --- a/arch/x86/kernel/pci-gart_64.c +++ b/arch/x86/kernel/pci-gart_64.c @@ -749,6 +749,15 @@ void __init gart_iommu_init(void) */ set_memory_np((unsigned long)__va(iommu_bus_base), iommu_size >> PAGE_SHIFT); + /* + * Tricky. The GART table remaps the physical memory range, + * so the CPU wont notice potential aliases and if the memory + * is remapped to UC later on, we might surprise the PCI devices + * with a stray writeout of a cacheline. So play it sure and + * do an explicit, full-scale wbinvd() _after_ having marked all + * the pages as Not-Present: + */ + wbinvd(); /* * Try to workaround a bug (thanks to BenH) diff --git a/arch/x86/kernel/test_rodata.c b/arch/x86/kernel/test_rodata.c index 4c163772000e..c29e235792af 100644 --- a/arch/x86/kernel/test_rodata.c +++ b/arch/x86/kernel/test_rodata.c @@ -10,8 +10,8 @@ * of the License. */ #include <linux/module.h> +#include <asm/cacheflush.h> #include <asm/sections.h> -extern int rodata_test_data; int rodata_test(void) { diff --git a/arch/x86/kernel/traps_64.c b/arch/x86/kernel/traps_64.c index efc66df728b6..045466681911 100644 --- a/arch/x86/kernel/traps_64.c +++ b/arch/x86/kernel/traps_64.c @@ -84,7 +84,7 @@ static inline void conditional_sti(struct pt_regs *regs) static inline void preempt_conditional_sti(struct pt_regs *regs) { - preempt_disable(); + inc_preempt_count(); if (regs->flags & X86_EFLAGS_IF) local_irq_enable(); } @@ -95,7 +95,7 @@ static inline void preempt_conditional_cli(struct pt_regs *regs) local_irq_disable(); /* Make sure to not schedule here because we could be running on an exception stack. */ - preempt_enable_no_resched(); + dec_preempt_count(); } int kstack_depth_to_print = 12; diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c index 621afb6343dc..fdc667422df9 100644 --- a/arch/x86/mm/fault.c +++ b/arch/x86/mm/fault.c @@ -186,7 +186,7 @@ static int bad_address(void *p) } #endif -void dump_pagetable(unsigned long address) +static void dump_pagetable(unsigned long address) { #ifdef CONFIG_X86_32 __typeof__(pte_val(__pte(0))) page; diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c index 8106bba41ecb..ee1091a46964 100644 --- a/arch/x86/mm/init_32.c +++ b/arch/x86/mm/init_32.c @@ -47,6 +47,7 @@ #include <asm/sections.h> #include <asm/paravirt.h> #include <asm/setup.h> +#include <asm/cacheflush.h> unsigned int __VMALLOC_RESERVE = 128 << 20; diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c index b59fc238151f..a4a9cccdd4f2 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c @@ -45,6 +45,7 @@ #include <asm/sections.h> #include <asm/kdebug.h> #include <asm/numa.h> +#include <asm/cacheflush.h> const struct dma_mapping_ops *dma_ops; EXPORT_SYMBOL(dma_ops); diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c index bd61ed13f9cf..4119379f80ff 100644 --- a/arch/x86/mm/pageattr.c +++ b/arch/x86/mm/pageattr.c @@ -688,6 +688,15 @@ static int change_page_attr_set_clr(unsigned long addr, int numpages, if (!pgprot_val(mask_set) && !pgprot_val(mask_clr)) return 0; + /* Ensure we are PAGE_SIZE aligned */ + if (addr & ~PAGE_MASK) { + addr &= PAGE_MASK; + /* + * People should not be passing in unaligned addresses: + */ + WARN_ON_ONCE(1); + } + cpa.vaddr = addr; cpa.numpages = numpages; cpa.mask_set = mask_set; @@ -861,8 +870,12 @@ void kernel_map_pages(struct page *page, int numpages, int enable) return; /* - * The return value is ignored - the calls cannot fail, - * large pages are disabled at boot time: + * The return value is ignored as the calls cannot fail. + * Large pages are kept enabled at boot time, and are + * split up quickly with DEBUG_PAGEALLOC. If a splitup + * fails here (due to temporary memory shortage) no damage + * is done because we just keep the largepage intact up + * to the next attempt when it will likely be split up: */ if (enable) __set_pages_p(page, numpages); |