diff options
Diffstat (limited to 'arch/x86/mm')
| -rw-r--r-- | arch/x86/mm/hugetlbpage.c | 4 | ||||
| -rw-r--r-- | arch/x86/mm/ioremap.c | 8 | ||||
| -rw-r--r-- | arch/x86/mm/pat/cpa-test.c | 4 | ||||
| -rw-r--r-- | arch/x86/mm/pat/set_memory.c | 22 |
4 files changed, 35 insertions, 3 deletions
diff --git a/arch/x86/mm/hugetlbpage.c b/arch/x86/mm/hugetlbpage.c index 6b3033845c6d..5804bbae4f01 100644 --- a/arch/x86/mm/hugetlbpage.c +++ b/arch/x86/mm/hugetlbpage.c @@ -37,8 +37,12 @@ int pmd_huge(pmd_t pmd) */ int pud_huge(pud_t pud) { +#if CONFIG_PGTABLE_LEVELS > 2 return !pud_none(pud) && (pud_val(pud) & (_PAGE_PRESENT|_PAGE_PSE)) != _PAGE_PRESENT; +#else + return 0; +#endif } #ifdef CONFIG_HUGETLB_PAGE diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c index 78c5bc654cff..6453fbaedb08 100644 --- a/arch/x86/mm/ioremap.c +++ b/arch/x86/mm/ioremap.c @@ -217,9 +217,15 @@ __ioremap_caller(resource_size_t phys_addr, unsigned long size, * Mappings have to be page-aligned */ offset = phys_addr & ~PAGE_MASK; - phys_addr &= PHYSICAL_PAGE_MASK; + phys_addr &= PAGE_MASK; size = PAGE_ALIGN(last_addr+1) - phys_addr; + /* + * Mask out any bits not part of the actual physical + * address, like memory encryption bits. + */ + phys_addr &= PHYSICAL_PAGE_MASK; + retval = memtype_reserve(phys_addr, (u64)phys_addr + size, pcm, &new_pcm); if (retval) { diff --git a/arch/x86/mm/pat/cpa-test.c b/arch/x86/mm/pat/cpa-test.c index 423b21e80929..3d2f7f0a6ed1 100644 --- a/arch/x86/mm/pat/cpa-test.c +++ b/arch/x86/mm/pat/cpa-test.c @@ -136,10 +136,10 @@ static int pageattr_test(void) failed += print_split(&sa); for (i = 0; i < NTEST; i++) { - unsigned long pfn = prandom_u32_max(max_pfn_mapped); + unsigned long pfn = get_random_u32_below(max_pfn_mapped); addr[i] = (unsigned long)__va(pfn << PAGE_SHIFT); - len[i] = prandom_u32_max(NPAGES); + len[i] = get_random_u32_below(NPAGES); len[i] = min_t(unsigned long, len[i], max_pfn_mapped - pfn - 1); if (len[i] == 0) diff --git a/arch/x86/mm/pat/set_memory.c b/arch/x86/mm/pat/set_memory.c index 97342c42dda8..ef34ba21aa92 100644 --- a/arch/x86/mm/pat/set_memory.c +++ b/arch/x86/mm/pat/set_memory.c @@ -20,6 +20,7 @@ #include <linux/kernel.h> #include <linux/cc_platform.h> #include <linux/set_memory.h> +#include <linux/memregion.h> #include <asm/e820/api.h> #include <asm/processor.h> @@ -330,6 +331,23 @@ void arch_invalidate_pmem(void *addr, size_t size) EXPORT_SYMBOL_GPL(arch_invalidate_pmem); #endif +#ifdef CONFIG_ARCH_HAS_CPU_CACHE_INVALIDATE_MEMREGION +bool cpu_cache_has_invalidate_memregion(void) +{ + return !cpu_feature_enabled(X86_FEATURE_HYPERVISOR); +} +EXPORT_SYMBOL_NS_GPL(cpu_cache_has_invalidate_memregion, DEVMEM); + +int cpu_cache_invalidate_memregion(int res_desc) +{ + if (WARN_ON_ONCE(!cpu_cache_has_invalidate_memregion())) + return -ENXIO; + wbinvd_on_all_cpus(); + return 0; +} +EXPORT_SYMBOL_NS_GPL(cpu_cache_invalidate_memregion, DEVMEM); +#endif + static void __cpa_flush_all(void *arg) { unsigned long cache = (unsigned long)arg; @@ -587,6 +605,10 @@ static inline pgprot_t verify_rwx(pgprot_t old, pgprot_t new, unsigned long star { unsigned long end; + /* Kernel text is rw at boot up */ + if (system_state == SYSTEM_BOOTING) + return new; + /* * 32-bit has some unfixable W+X issues, like EFI code * and writeable data being in the same page. Disable |