diff options
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/Kconfig | 11 | ||||
| -rw-r--r-- | arch/x86/Kconfig.debug | 27 | ||||
| -rw-r--r-- | arch/x86/include/asm/hugetlb.h | 10 | ||||
| -rw-r--r-- | arch/x86/include/asm/pgtable.h | 2 | ||||
| -rw-r--r-- | arch/x86/mm/hugetlbpage.c | 23 | ||||
| -rw-r--r-- | arch/x86/mm/init.c | 2 | ||||
| -rw-r--r-- | arch/x86/mm/init_64.c | 12 | ||||
| -rw-r--r-- | arch/x86/mm/kmmio.c | 2 | ||||
| -rw-r--r-- | arch/x86/mm/numa.c | 11 |
9 files changed, 29 insertions, 71 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 70c668d976cc..57d1c4e36738 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -82,6 +82,7 @@ config X86 select ARCH_HAS_SYNC_CORE_BEFORE_USERMODE select ARCH_HAS_SYSCALL_WRAPPER select ARCH_HAS_UBSAN_SANITIZE_ALL + select ARCH_HAS_DEBUG_WX select ARCH_HAVE_NMI_SAFE_CMPXCHG select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI select ARCH_MIGHT_HAVE_PC_PARPORT @@ -193,7 +194,6 @@ config X86 select HAVE_KRETPROBES select HAVE_KVM select HAVE_LIVEPATCH if X86_64 - select HAVE_MEMBLOCK_NODE_MAP select HAVE_MIXED_BREAKPOINTS_REGS select HAVE_MOD_ARCH_SPECIFIC select HAVE_MOVE_PMD @@ -1585,15 +1585,6 @@ config X86_64_ACPI_NUMA ---help--- Enable ACPI SRAT based node topology detection. -# Some NUMA nodes have memory ranges that span -# other nodes. Even though a pfn is valid and -# between a node's start and end pfns, it may not -# reside on that node. See memmap_init_zone() -# for details. -config NODES_SPAN_OTHER_NODES - def_bool y - depends on X86_64_ACPI_NUMA - config NUMA_EMU bool "NUMA emulation" depends on NUMA diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug index f909d3ce36e6..fdf1431ac8c2 100644 --- a/arch/x86/Kconfig.debug +++ b/arch/x86/Kconfig.debug @@ -72,33 +72,6 @@ config EFI_PGT_DUMP issues with the mapping of the EFI runtime regions into that table. -config DEBUG_WX - bool "Warn on W+X mappings at boot" - select PTDUMP_CORE - ---help--- - Generate a warning if any W+X mappings are found at boot. - - This is useful for discovering cases where the kernel is leaving - W+X mappings after applying NX, as such mappings are a security risk. - - Look for a message in dmesg output like this: - - x86/mm: Checked W+X mappings: passed, no W+X pages found. - - or like this, if the check failed: - - x86/mm: Checked W+X mappings: FAILED, <N> W+X pages found. - - Note that even if the check fails, your kernel is possibly - still fine, as W+X mappings are not a security hole in - themselves, what they do is that they make the exploitation - of other unfixed kernel bugs easier. - - There is no runtime or memory usage effect of this option - once the kernel has booted up - it's a one time check. - - If in doubt, say "Y". - config DEBUG_TLBFLUSH bool "Set upper limit of TLB entries to flush one-by-one" depends on DEBUG_KERNEL diff --git a/arch/x86/include/asm/hugetlb.h b/arch/x86/include/asm/hugetlb.h index f65cfb48cfdd..1721b1aadeb1 100644 --- a/arch/x86/include/asm/hugetlb.h +++ b/arch/x86/include/asm/hugetlb.h @@ -7,14 +7,4 @@ #define hugepages_supported() boot_cpu_has(X86_FEATURE_PSE) -static inline int is_hugepage_only_range(struct mm_struct *mm, - unsigned long addr, - unsigned long len) { - return 0; -} - -static inline void arch_clear_hugepage_flags(struct page *page) -{ -} - #endif /* _ASM_X86_HUGETLB_H */ diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h index 4d02e64af1b3..f51d8997ed00 100644 --- a/arch/x86/include/asm/pgtable.h +++ b/arch/x86/include/asm/pgtable.h @@ -624,7 +624,7 @@ static inline pud_t pfn_pud(unsigned long page_nr, pgprot_t pgprot) return __pud(pfn | check_pgprot(pgprot)); } -static inline pmd_t pmd_mknotpresent(pmd_t pmd) +static inline pmd_t pmd_mkinvalid(pmd_t pmd) { return pfn_pmd(pmd_pfn(pmd), __pgprot(pmd_flags(pmd) & ~(_PAGE_PRESENT|_PAGE_PROTNONE))); diff --git a/arch/x86/mm/hugetlbpage.c b/arch/x86/mm/hugetlbpage.c index 5bfd5aef5378..cf5781142716 100644 --- a/arch/x86/mm/hugetlbpage.c +++ b/arch/x86/mm/hugetlbpage.c @@ -181,28 +181,21 @@ get_unmapped_area: #endif /* CONFIG_HUGETLB_PAGE */ #ifdef CONFIG_X86_64 -static __init int setup_hugepagesz(char *opt) +bool __init arch_hugetlb_valid_size(unsigned long size) { - unsigned long ps = memparse(opt, &opt); - if (ps == PMD_SIZE) { - hugetlb_add_hstate(PMD_SHIFT - PAGE_SHIFT); - } else if (ps == PUD_SIZE && boot_cpu_has(X86_FEATURE_GBPAGES)) { - hugetlb_add_hstate(PUD_SHIFT - PAGE_SHIFT); - } else { - hugetlb_bad_size(); - printk(KERN_ERR "hugepagesz: Unsupported page size %lu M\n", - ps >> 20); - return 0; - } - return 1; + if (size == PMD_SIZE) + return true; + else if (size == PUD_SIZE && boot_cpu_has(X86_FEATURE_GBPAGES)) + return true; + else + return false; } -__setup("hugepagesz=", setup_hugepagesz); #ifdef CONFIG_CONTIG_ALLOC static __init int gigantic_pages_init(void) { /* With compaction or CMA we can allocate gigantic pages at runtime */ - if (boot_cpu_has(X86_FEATURE_GBPAGES) && !size_to_hstate(1UL << PUD_SHIFT)) + if (boot_cpu_has(X86_FEATURE_GBPAGES)) hugetlb_add_hstate(PUD_SHIFT - PAGE_SHIFT); return 0; } diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c index a573a3e63f02..1decb645dac0 100644 --- a/arch/x86/mm/init.c +++ b/arch/x86/mm/init.c @@ -947,7 +947,7 @@ void __init zone_sizes_init(void) max_zone_pfns[ZONE_HIGHMEM] = max_pfn; #endif - free_area_init_nodes(max_zone_pfns); + free_area_init(max_zone_pfns); } __visible DEFINE_PER_CPU_SHARED_ALIGNED(struct tlb_state, cpu_tlbstate) = { diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c index 96274a90c5ff..e08f1007f776 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c @@ -1265,6 +1265,18 @@ void __init mem_init(void) mem_init_print_info(NULL); } +#ifdef CONFIG_DEFERRED_STRUCT_PAGE_INIT +int __init deferred_page_init_max_threads(const struct cpumask *node_cpumask) +{ + /* + * More CPUs always led to greater speedups on tested systems, up to + * all the nodes' CPUs. Use all since the system is otherwise idle + * now. + */ + return max_t(int, cpumask_weight(node_cpumask), 1); +} +#endif + int kernel_set_to_readonly; void mark_rodata_ro(void) diff --git a/arch/x86/mm/kmmio.c b/arch/x86/mm/kmmio.c index 9994353fb75d..22bae5828c3d 100644 --- a/arch/x86/mm/kmmio.c +++ b/arch/x86/mm/kmmio.c @@ -130,7 +130,7 @@ static void clear_pmd_presence(pmd_t *pmd, bool clear, pmdval_t *old) pmdval_t v = pmd_val(*pmd); if (clear) { *old = v; - new_pmd = pmd_mknotpresent(*pmd); + new_pmd = pmd_mkinvalid(*pmd); } else { /* Presume this has been called with clear==true previously */ new_pmd = __pmd(*old); diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c index 59ba008504dc..8ee952038c80 100644 --- a/arch/x86/mm/numa.c +++ b/arch/x86/mm/numa.c @@ -517,8 +517,10 @@ static void __init numa_clear_kernel_node_hotplug(void) * reserve specific pages for Sandy Bridge graphics. ] */ for_each_memblock(reserved, mb_region) { - if (mb_region->nid != MAX_NUMNODES) - node_set(mb_region->nid, reserved_nodemask); + int nid = memblock_get_region_node(mb_region); + + if (nid != MAX_NUMNODES) + node_set(nid, reserved_nodemask); } /* @@ -735,12 +737,9 @@ void __init x86_numa_init(void) static void __init init_memory_less_node(int nid) { - unsigned long zones_size[MAX_NR_ZONES] = {0}; - unsigned long zholes_size[MAX_NR_ZONES] = {0}; - /* Allocate and initialize node data. Memory-less node is now online.*/ alloc_node_data(nid); - free_area_init_node(nid, zones_size, 0, zholes_size); + free_area_init_memoryless_node(nid); /* * All zonelists will be built later in start_kernel() after per cpu |