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-rw-r--r--arch/sh/Kconfig2
-rw-r--r--arch/sh/include/asm/checksum_32.h9
-rw-r--r--arch/sh/include/asm/hugetlb.h7
-rw-r--r--arch/sh/include/asm/pgtable-2level.h1
-rw-r--r--arch/sh/include/asm/pgtable-3level.h1
-rw-r--r--arch/sh/include/asm/pgtable_32.h5
-rw-r--r--arch/sh/include/asm/pgtable_64.h5
-rw-r--r--arch/sh/include/uapi/asm/sockios.h2
-rw-r--r--arch/sh/kernel/cpu/sh4/sq.c3
-rw-r--r--arch/sh/kernel/io_trapped.c7
-rw-r--r--arch/sh/kernel/syscalls/syscall.tbl1
-rw-r--r--arch/sh/kernel/traps.c12
-rw-r--r--arch/sh/mm/cache-sh4.c4
-rw-r--r--arch/sh/mm/cache-sh5.c7
-rw-r--r--arch/sh/mm/fault.c64
-rw-r--r--arch/sh/mm/hugetlbpage.c28
-rw-r--r--arch/sh/mm/init.c17
-rw-r--r--arch/sh/mm/kmap.c2
-rw-r--r--arch/sh/mm/tlbex_32.c6
-rw-r--r--arch/sh/mm/tlbex_64.c7
20 files changed, 127 insertions, 63 deletions
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index b4f0e37b83eb..0424b8f2f8d3 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -9,7 +9,6 @@ config SUPERH
select CLKDEV_LOOKUP
select DMA_DECLARE_COHERENT
select HAVE_IDE if HAS_IOPORT_MAP
- select HAVE_MEMBLOCK_NODE_MAP
select HAVE_OPROFILE
select HAVE_ARCH_TRACEHOOK
select HAVE_PERF_EVENTS
@@ -71,7 +70,6 @@ config SUPERH32
select HAVE_FUNCTION_TRACER
select HAVE_FTRACE_MCOUNT_RECORD
select HAVE_DYNAMIC_FTRACE
- select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
select ARCH_WANT_IPC_PARSE_VERSION
select HAVE_FUNCTION_GRAPH_TRACER
select HAVE_ARCH_KGDB
diff --git a/arch/sh/include/asm/checksum_32.h b/arch/sh/include/asm/checksum_32.h
index 36b84cfd3f67..91571a42e44e 100644
--- a/arch/sh/include/asm/checksum_32.h
+++ b/arch/sh/include/asm/checksum_32.h
@@ -48,12 +48,17 @@ __wsum csum_partial_copy_nocheck(const void *src, void *dst,
return csum_partial_copy_generic(src, dst, len, sum, NULL, NULL);
}
+#define _HAVE_ARCH_COPY_AND_CSUM_FROM_USER
static inline
-__wsum csum_partial_copy_from_user(const void __user *src, void *dst,
+__wsum csum_and_copy_from_user(const void __user *src, void *dst,
int len, __wsum sum, int *err_ptr)
{
- return csum_partial_copy_generic((__force const void *)src, dst,
+ if (access_ok(src, len))
+ return csum_partial_copy_generic((__force const void *)src, dst,
len, sum, err_ptr, NULL);
+ if (len)
+ *err_ptr = -EFAULT;
+ return sum;
}
/*
diff --git a/arch/sh/include/asm/hugetlb.h b/arch/sh/include/asm/hugetlb.h
index 6f025fe18146..ae4de7b89210 100644
--- a/arch/sh/include/asm/hugetlb.h
+++ b/arch/sh/include/asm/hugetlb.h
@@ -5,12 +5,6 @@
#include <asm/cacheflush.h>
#include <asm/page.h>
-static inline int is_hugepage_only_range(struct mm_struct *mm,
- unsigned long addr,
- unsigned long len) {
- return 0;
-}
-
/*
* If the arch doesn't supply something else, assume that hugepage
* size aligned regions are ok without further preparation.
@@ -36,6 +30,7 @@ static inline void arch_clear_hugepage_flags(struct page *page)
{
clear_bit(PG_dcache_clean, &page->flags);
}
+#define arch_clear_hugepage_flags arch_clear_hugepage_flags
#include <asm-generic/hugetlb.h>
diff --git a/arch/sh/include/asm/pgtable-2level.h b/arch/sh/include/asm/pgtable-2level.h
index bf1eb51c3ee5..08bff93927ff 100644
--- a/arch/sh/include/asm/pgtable-2level.h
+++ b/arch/sh/include/asm/pgtable-2level.h
@@ -2,7 +2,6 @@
#ifndef __ASM_SH_PGTABLE_2LEVEL_H
#define __ASM_SH_PGTABLE_2LEVEL_H
-#define __ARCH_USE_5LEVEL_HACK
#include <asm-generic/pgtable-nopmd.h>
/*
diff --git a/arch/sh/include/asm/pgtable-3level.h b/arch/sh/include/asm/pgtable-3level.h
index 779260b721ca..0f80097e5c9c 100644
--- a/arch/sh/include/asm/pgtable-3level.h
+++ b/arch/sh/include/asm/pgtable-3level.h
@@ -2,7 +2,6 @@
#ifndef __ASM_SH_PGTABLE_3LEVEL_H
#define __ASM_SH_PGTABLE_3LEVEL_H
-#define __ARCH_USE_5LEVEL_HACK
#include <asm-generic/pgtable-nopud.h>
/*
diff --git a/arch/sh/include/asm/pgtable_32.h b/arch/sh/include/asm/pgtable_32.h
index 29274f0e428e..4acce5f2cbf9 100644
--- a/arch/sh/include/asm/pgtable_32.h
+++ b/arch/sh/include/asm/pgtable_32.h
@@ -407,13 +407,12 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
/* to find an entry in a page-table-directory. */
#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
-#define __pgd_offset(address) pgd_index(address)
/* to find an entry in a kernel page-table-directory */
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
-#define __pud_offset(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1))
-#define __pmd_offset(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
+#define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1))
+#define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
/* Find an entry in the third-level page table.. */
#define pte_index(address) ((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
diff --git a/arch/sh/include/asm/pgtable_64.h b/arch/sh/include/asm/pgtable_64.h
index 1778bc5971e7..27cc282ec6c0 100644
--- a/arch/sh/include/asm/pgtable_64.h
+++ b/arch/sh/include/asm/pgtable_64.h
@@ -46,14 +46,13 @@ static __inline__ void set_pte(pte_t *pteptr, pte_t pteval)
/* To find an entry in a generic PGD. */
#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
-#define __pgd_offset(address) pgd_index(address)
#define pgd_offset(mm, address) ((mm)->pgd+pgd_index(address))
/* To find an entry in a kernel PGD. */
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
-#define __pud_offset(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1))
-#define __pmd_offset(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
+#define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1))
+/* #define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1)) */
/*
* PMD level access routines. Same notes as above.
diff --git a/arch/sh/include/uapi/asm/sockios.h b/arch/sh/include/uapi/asm/sockios.h
index 3da561453260..ef01ced9e169 100644
--- a/arch/sh/include/uapi/asm/sockios.h
+++ b/arch/sh/include/uapi/asm/sockios.h
@@ -2,6 +2,8 @@
#ifndef __ASM_SH_SOCKIOS_H
#define __ASM_SH_SOCKIOS_H
+#include <linux/time_types.h>
+
/* Socket-level I/O control calls. */
#define FIOGETOWN _IOR('f', 123, int)
#define FIOSETOWN _IOW('f', 124, int)
diff --git a/arch/sh/kernel/cpu/sh4/sq.c b/arch/sh/kernel/cpu/sh4/sq.c
index 934ff84844fa..d432164b23b7 100644
--- a/arch/sh/kernel/cpu/sh4/sq.c
+++ b/arch/sh/kernel/cpu/sh4/sq.c
@@ -103,7 +103,8 @@ static int __sq_remap(struct sq_mapping *map, pgprot_t prot)
#if defined(CONFIG_MMU)
struct vm_struct *vma;
- vma = __get_vm_area(map->size, VM_ALLOC, map->sq_addr, SQ_ADDRMAX);
+ vma = __get_vm_area_caller(map->size, VM_ALLOC, map->sq_addr,
+ SQ_ADDRMAX, __builtin_return_address(0));
if (!vma)
return -ENOMEM;
diff --git a/arch/sh/kernel/io_trapped.c b/arch/sh/kernel/io_trapped.c
index 60c828a2b8a2..037aab2708b7 100644
--- a/arch/sh/kernel/io_trapped.c
+++ b/arch/sh/kernel/io_trapped.c
@@ -136,6 +136,7 @@ EXPORT_SYMBOL_GPL(match_trapped_io_handler);
static struct trapped_io *lookup_tiop(unsigned long address)
{
pgd_t *pgd_k;
+ p4d_t *p4d_k;
pud_t *pud_k;
pmd_t *pmd_k;
pte_t *pte_k;
@@ -145,7 +146,11 @@ static struct trapped_io *lookup_tiop(unsigned long address)
if (!pgd_present(*pgd_k))
return NULL;
- pud_k = pud_offset(pgd_k, address);
+ p4d_k = p4d_offset(pgd_k, address);
+ if (!p4d_present(*p4d_k))
+ return NULL;
+
+ pud_k = pud_offset(p4d_k, address);
if (!pud_present(*pud_k))
return NULL;
diff --git a/arch/sh/kernel/syscalls/syscall.tbl b/arch/sh/kernel/syscalls/syscall.tbl
index c7a30fcd135f..acc35daa1b79 100644
--- a/arch/sh/kernel/syscalls/syscall.tbl
+++ b/arch/sh/kernel/syscalls/syscall.tbl
@@ -440,3 +440,4 @@
# 435 reserved for clone3
437 common openat2 sys_openat2
438 common pidfd_getfd sys_pidfd_getfd
+439 common faccessat2 sys_faccessat2
diff --git a/arch/sh/kernel/traps.c b/arch/sh/kernel/traps.c
index 63cf17bc760d..2130381c9d57 100644
--- a/arch/sh/kernel/traps.c
+++ b/arch/sh/kernel/traps.c
@@ -170,11 +170,21 @@ BUILD_TRAP_HANDLER(bug)
force_sig(SIGTRAP);
}
+#ifdef CONFIG_DYNAMIC_FTRACE
+extern void arch_ftrace_nmi_enter(void);
+extern void arch_ftrace_nmi_exit(void);
+#else
+static inline void arch_ftrace_nmi_enter(void) { }
+static inline void arch_ftrace_nmi_exit(void) { }
+#endif
+
BUILD_TRAP_HANDLER(nmi)
{
unsigned int cpu = smp_processor_id();
TRAP_HANDLER_DECL;
+ arch_ftrace_nmi_enter();
+
nmi_enter();
nmi_count(cpu)++;
@@ -190,4 +200,6 @@ BUILD_TRAP_HANDLER(nmi)
}
nmi_exit();
+
+ arch_ftrace_nmi_exit();
}
diff --git a/arch/sh/mm/cache-sh4.c b/arch/sh/mm/cache-sh4.c
index eee911422cf9..45943bcb7042 100644
--- a/arch/sh/mm/cache-sh4.c
+++ b/arch/sh/mm/cache-sh4.c
@@ -209,6 +209,7 @@ static void sh4_flush_cache_page(void *args)
unsigned long address, pfn, phys;
int map_coherent = 0;
pgd_t *pgd;
+ p4d_t *p4d;
pud_t *pud;
pmd_t *pmd;
pte_t *pte;
@@ -224,7 +225,8 @@ static void sh4_flush_cache_page(void *args)
return;
pgd = pgd_offset(vma->vm_mm, address);
- pud = pud_offset(pgd, address);
+ p4d = p4d_offset(pgd, address);
+ pud = pud_offset(p4d, address);
pmd = pmd_offset(pud, address);
pte = pte_offset_kernel(pmd, address);
diff --git a/arch/sh/mm/cache-sh5.c b/arch/sh/mm/cache-sh5.c
index 445b5e69b73c..442a77cc2957 100644
--- a/arch/sh/mm/cache-sh5.c
+++ b/arch/sh/mm/cache-sh5.c
@@ -383,6 +383,7 @@ static void sh64_dcache_purge_user_pages(struct mm_struct *mm,
unsigned long addr, unsigned long end)
{
pgd_t *pgd;
+ p4d_t *p4d;
pud_t *pud;
pmd_t *pmd;
pte_t *pte;
@@ -397,7 +398,11 @@ static void sh64_dcache_purge_user_pages(struct mm_struct *mm,
if (pgd_bad(*pgd))
return;
- pud = pud_offset(pgd, addr);
+ p4d = p4d_offset(pgd, addr);
+ if (p4d_none(*p4d) || p4d_bad(*p4d))
+ return;
+
+ pud = pud_offset(p4d, addr);
if (pud_none(*pud) || pud_bad(*pud))
return;
diff --git a/arch/sh/mm/fault.c b/arch/sh/mm/fault.c
index 5f23d7907597..7260a1a7fdca 100644
--- a/arch/sh/mm/fault.c
+++ b/arch/sh/mm/fault.c
@@ -47,12 +47,13 @@ static void show_pte(struct mm_struct *mm, unsigned long addr)
pgd = swapper_pg_dir;
}
- printk(KERN_ALERT "pgd = %p\n", pgd);
+ pr_alert("pgd = %p\n", pgd);
pgd += pgd_index(addr);
- printk(KERN_ALERT "[%08lx] *pgd=%0*Lx", addr,
- (u32)(sizeof(*pgd) * 2), (u64)pgd_val(*pgd));
+ pr_alert("[%08lx] *pgd=%0*llx", addr, (u32)(sizeof(*pgd) * 2),
+ (u64)pgd_val(*pgd));
do {
+ p4d_t *p4d;
pud_t *pud;
pmd_t *pmd;
pte_t *pte;
@@ -61,33 +62,46 @@ static void show_pte(struct mm_struct *mm, unsigned long addr)
break;
if (pgd_bad(*pgd)) {
- printk("(bad)");
+ pr_cont("(bad)");
break;
}
- pud = pud_offset(pgd, addr);
+ p4d = p4d_offset(pgd, addr);
+ if (PTRS_PER_P4D != 1)
+ pr_cont(", *p4d=%0*Lx", (u32)(sizeof(*p4d) * 2),
+ (u64)p4d_val(*p4d));
+
+ if (p4d_none(*p4d))
+ break;
+
+ if (p4d_bad(*p4d)) {
+ pr_cont("(bad)");
+ break;
+ }
+
+ pud = pud_offset(p4d, addr);
if (PTRS_PER_PUD != 1)
- printk(", *pud=%0*Lx", (u32)(sizeof(*pud) * 2),
- (u64)pud_val(*pud));
+ pr_cont(", *pud=%0*llx", (u32)(sizeof(*pud) * 2),
+ (u64)pud_val(*pud));
if (pud_none(*pud))
break;
if (pud_bad(*pud)) {
- printk("(bad)");
+ pr_cont("(bad)");
break;
}
pmd = pmd_offset(pud, addr);
if (PTRS_PER_PMD != 1)
- printk(", *pmd=%0*Lx", (u32)(sizeof(*pmd) * 2),
- (u64)pmd_val(*pmd));
+ pr_cont(", *pmd=%0*llx", (u32)(sizeof(*pmd) * 2),
+ (u64)pmd_val(*pmd));
if (pmd_none(*pmd))
break;
if (pmd_bad(*pmd)) {
- printk("(bad)");
+ pr_cont("(bad)");
break;
}
@@ -96,17 +110,18 @@ static void show_pte(struct mm_struct *mm, unsigned long addr)
break;
pte = pte_offset_kernel(pmd, addr);
- printk(", *pte=%0*Lx", (u32)(sizeof(*pte) * 2),
- (u64)pte_val(*pte));
+ pr_cont(", *pte=%0*llx", (u32)(sizeof(*pte) * 2),
+ (u64)pte_val(*pte));
} while (0);
- printk("\n");
+ pr_cont("\n");
}
static inline pmd_t *vmalloc_sync_one(pgd_t *pgd, unsigned long address)
{
unsigned index = pgd_index(address);
pgd_t *pgd_k;
+ p4d_t *p4d, *p4d_k;
pud_t *pud, *pud_k;
pmd_t *pmd, *pmd_k;
@@ -116,8 +131,13 @@ static inline pmd_t *vmalloc_sync_one(pgd_t *pgd, unsigned long address)
if (!pgd_present(*pgd_k))
return NULL;
- pud = pud_offset(pgd, address);
- pud_k = pud_offset(pgd_k, address);
+ p4d = p4d_offset(pgd, address);
+ p4d_k = p4d_offset(pgd_k, address);
+ if (!p4d_present(*p4d_k))
+ return NULL;
+
+ pud = pud_offset(p4d, address);
+ pud_k = pud_offset(p4d_k, address);
if (!pud_present(*pud_k))
return NULL;
@@ -188,14 +208,12 @@ show_fault_oops(struct pt_regs *regs, unsigned long address)
if (!oops_may_print())
return;
- printk(KERN_ALERT "BUG: unable to handle kernel ");
- if (address < PAGE_SIZE)
- printk(KERN_CONT "NULL pointer dereference");
- else
- printk(KERN_CONT "paging request");
-
- printk(KERN_CONT " at %08lx\n", address);
printk(KERN_ALERT "PC:");
+ pr_alert("BUG: unable to handle kernel %s at %08lx\n",
+ address < PAGE_SIZE ? "NULL pointer dereference"
+ : "paging request",
+ address);
+ pr_alert("PC:");
printk_address(regs->pc, 1);
show_pte(NULL, address);
diff --git a/arch/sh/mm/hugetlbpage.c b/arch/sh/mm/hugetlbpage.c
index 960deb1f24a1..acd5652a0de3 100644
--- a/arch/sh/mm/hugetlbpage.c
+++ b/arch/sh/mm/hugetlbpage.c
@@ -26,17 +26,21 @@ pte_t *huge_pte_alloc(struct mm_struct *mm,
unsigned long addr, unsigned long sz)
{
pgd_t *pgd;
+ p4d_t *p4d;
pud_t *pud;
pmd_t *pmd;
pte_t *pte = NULL;
pgd = pgd_offset(mm, addr);
if (pgd) {
- pud = pud_alloc(mm, pgd, addr);
- if (pud) {
- pmd = pmd_alloc(mm, pud, addr);
- if (pmd)
- pte = pte_alloc_map(mm, pmd, addr);
+ p4d = p4d_alloc(mm, pgd, addr);
+ if (p4d) {
+ pud = pud_alloc(mm, p4d, addr);
+ if (pud) {
+ pmd = pmd_alloc(mm, pud, addr);
+ if (pmd)
+ pte = pte_alloc_map(mm, pmd, addr);
+ }
}
}
@@ -47,17 +51,21 @@ pte_t *huge_pte_offset(struct mm_struct *mm,
unsigned long addr, unsigned long sz)
{
pgd_t *pgd;
+ p4d_t *p4d;
pud_t *pud;
pmd_t *pmd;
pte_t *pte = NULL;
pgd = pgd_offset(mm, addr);
if (pgd) {
- pud = pud_offset(pgd, addr);
- if (pud) {
- pmd = pmd_offset(pud, addr);
- if (pmd)
- pte = pte_offset_map(pmd, addr);
+ p4d = p4d_offset(pgd, addr);
+ if (p4d) {
+ pud = pud_offset(p4d, addr);
+ if (pud) {
+ pmd = pmd_offset(pud, addr);
+ if (pmd)
+ pte = pte_offset_map(pmd, addr);
+ }
}
}
diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index 8d2a68aea1fc..a70ba0fdd0b3 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -45,6 +45,7 @@ void __init __weak plat_mem_setup(void)
static pte_t *__get_pte_phys(unsigned long addr)
{
pgd_t *pgd;
+ p4d_t *p4d;
pud_t *pud;
pmd_t *pmd;
@@ -54,7 +55,13 @@ static pte_t *__get_pte_phys(unsigned long addr)
return NULL;
}
- pud = pud_alloc(NULL, pgd, addr);
+ p4d = p4d_alloc(NULL, pgd, addr);
+ if (unlikely(!p4d)) {
+ p4d_ERROR(*p4d);
+ return NULL;
+ }
+
+ pud = pud_alloc(NULL, p4d, addr);
if (unlikely(!pud)) {
pud_ERROR(*pud);
return NULL;
@@ -172,9 +179,9 @@ void __init page_table_range_init(unsigned long start, unsigned long end,
unsigned long vaddr;
vaddr = start;
- i = __pgd_offset(vaddr);
- j = __pud_offset(vaddr);
- k = __pmd_offset(vaddr);
+ i = pgd_index(vaddr);
+ j = pud_index(vaddr);
+ k = pmd_index(vaddr);
pgd = pgd_base + i;
for ( ; (i < PTRS_PER_PGD) && (vaddr != end); pgd++, i++) {
@@ -334,7 +341,7 @@ void __init paging_init(void)
memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
max_zone_pfns[ZONE_NORMAL] = max_low_pfn;
- free_area_init_nodes(max_zone_pfns);
+ free_area_init(max_zone_pfns);
}
unsigned int mem_init_done = 0;
diff --git a/arch/sh/mm/kmap.c b/arch/sh/mm/kmap.c
index 9e6b38b03cf7..0e7039137f5a 100644
--- a/arch/sh/mm/kmap.c
+++ b/arch/sh/mm/kmap.c
@@ -15,7 +15,7 @@
#include <asm/cacheflush.h>
#define kmap_get_fixmap_pte(vaddr) \
- pte_offset_kernel(pmd_offset(pud_offset(pgd_offset_k(vaddr), (vaddr)), (vaddr)), (vaddr))
+ pte_offset_kernel(pmd_offset(pud_offset(p4d_offset(pgd_offset_k(vaddr), (vaddr)), (vaddr)), (vaddr)), vaddr)
static pte_t *kmap_coherent_pte;
diff --git a/arch/sh/mm/tlbex_32.c b/arch/sh/mm/tlbex_32.c
index 382262dc0c4b..1c53868632ee 100644
--- a/arch/sh/mm/tlbex_32.c
+++ b/arch/sh/mm/tlbex_32.c
@@ -23,6 +23,7 @@ handle_tlbmiss(struct pt_regs *regs, unsigned long error_code,
unsigned long address)
{
pgd_t *pgd;
+ p4d_t *p4d;
pud_t *pud;
pmd_t *pmd;
pte_t *pte;
@@ -42,7 +43,10 @@ handle_tlbmiss(struct pt_regs *regs, unsigned long error_code,
pgd = pgd_offset(current->mm, address);
}
- pud = pud_offset(pgd, address);
+ p4d = p4d_offset(pgd, address);
+ if (p4d_none_or_clear_bad(p4d))
+ return 1;
+ pud = pud_offset(p4d, address);
if (pud_none_or_clear_bad(pud))
return 1;
pmd = pmd_offset(pud, address);
diff --git a/arch/sh/mm/tlbex_64.c b/arch/sh/mm/tlbex_64.c
index 8ff966dd0c74..0d015f7556fa 100644
--- a/arch/sh/mm/tlbex_64.c
+++ b/arch/sh/mm/tlbex_64.c
@@ -44,6 +44,7 @@ static int handle_tlbmiss(unsigned long long protection_flags,
unsigned long address)
{
pgd_t *pgd;
+ p4d_t *p4d;
pud_t *pud;
pmd_t *pmd;
pte_t *pte;
@@ -58,7 +59,11 @@ static int handle_tlbmiss(unsigned long long protection_flags,
pgd = pgd_offset(current->mm, address);
}
- pud = pud_offset(pgd, address);
+ p4d = p4d_offset(pgd, address);
+ if (p4d_none(*p4d) || !p4d_present(*p4d))
+ return 1;
+
+ pud = pud_offset(p4d, address);
if (pud_none(*pud) || !pud_present(*pud))
return 1;
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