From: Andrew Morton <akpm@linux-foundation.org>
To: akpm@linux-foundation.org, arnd@arndb.de, bcain@codeaurora.org,
benh@kernel.crashing.org, catalin.marinas@arm.com,
christophe.leroy@c-s.fr, dalias@libc.org, fenghua.yu@intel.com,
geert+renesas@glider.be, gxt@pku.edu.cn, james.morse@arm.com,
jonas@southpole.se, julien.thierry.kdev@gmail.com,
ley.foon.tan@intel.com, linux-mm@kvack.org,
linux@armlinux.org.uk, maz@kernel.org,
mm-commits@vger.kernel.org, mpe@ellerman.id.au, paulus@samba.org,
rppt@linux.ibm.com, shorne@gmail.com,
stefan.kristiansson@saunalahti.fi, suzuki.poulose@arm.com,
tony.luck@intel.com, torvalds@linux-foundation.org,
will@kernel.org, ysato@users.sourceforge.jp
Subject: [patch 016/127] powerpc: add support for folded p4d page tables
Date: Thu, 04 Jun 2020 16:46:44 -0700 [thread overview]
Message-ID: <20200604234644.sGr62a5Gp%akpm@linux-foundation.org> (raw)
In-Reply-To: <20200604164523.e15f3177f4b69dcb4f2534a1@linux-foundation.org>
From: Mike Rapoport <rppt@linux.ibm.com>
Subject: powerpc: add support for folded p4d page tables
Implement primitives necessary for the 4th level folding, add walks of p4d
level where appropriate and replace 5level-fixup.h with pgtable-nop4d.h.
[rppt@linux.ibm.com: powerpc/xmon: drop unused pgdir varialble in show_pte() function]
Link: http://lkml.kernel.org/r/20200519181454.GI1059226@linux.ibm.com
[rppt@linux.ibm.com; build fix]
Link: http://lkml.kernel.org/r/20200423141845.GI13521@linux.ibm.com
Link: http://lkml.kernel.org/r/20200414153455.21744-9-rppt@kernel.org
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Tested-by: Christophe Leroy <christophe.leroy@c-s.fr> # 8xx and 83xx
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Brian Cain <bcain@codeaurora.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: James Morse <james.morse@arm.com>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Julien Thierry <julien.thierry.kdev@gmail.com>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Will Deacon <will@kernel.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
arch/powerpc/include/asm/book3s/32/pgtable.h | 1
arch/powerpc/include/asm/book3s/64/hash.h | 4
arch/powerpc/include/asm/book3s/64/pgalloc.h | 4
arch/powerpc/include/asm/book3s/64/pgtable.h | 60 +++++++-------
arch/powerpc/include/asm/book3s/64/radix.h | 6 -
arch/powerpc/include/asm/nohash/32/pgtable.h | 1
arch/powerpc/include/asm/nohash/64/pgalloc.h | 2
arch/powerpc/include/asm/nohash/64/pgtable-4k.h | 32 +++----
arch/powerpc/include/asm/nohash/64/pgtable.h | 6 -
arch/powerpc/include/asm/pgtable.h | 10 +-
arch/powerpc/kvm/book3s_64_mmu_radix.c | 32 ++++---
arch/powerpc/lib/code-patching.c | 7 +
arch/powerpc/mm/book3s64/hash_pgtable.c | 4
arch/powerpc/mm/book3s64/radix_pgtable.c | 26 +++---
arch/powerpc/mm/book3s64/subpage_prot.c | 6 -
arch/powerpc/mm/hugetlbpage.c | 28 +++---
arch/powerpc/mm/kasan/kasan_init_32.c | 2
arch/powerpc/mm/nohash/book3e_pgtable.c | 15 +--
arch/powerpc/mm/pgtable.c | 30 ++++---
arch/powerpc/mm/pgtable_64.c | 10 +-
arch/powerpc/mm/ptdump/hashpagetable.c | 20 +++-
arch/powerpc/mm/ptdump/ptdump.c | 12 +-
arch/powerpc/xmon/xmon.c | 27 +++---
23 files changed, 200 insertions(+), 145 deletions(-)
--- a/arch/powerpc/include/asm/book3s/32/pgtable.h~powerpc-add-support-for-folded-p4d-page-tables
+++ a/arch/powerpc/include/asm/book3s/32/pgtable.h
@@ -2,7 +2,6 @@
#ifndef _ASM_POWERPC_BOOK3S_32_PGTABLE_H
#define _ASM_POWERPC_BOOK3S_32_PGTABLE_H
-#define __ARCH_USE_5LEVEL_HACK
#include <asm-generic/pgtable-nopmd.h>
#include <asm/book3s/32/hash.h>
--- a/arch/powerpc/include/asm/book3s/64/hash.h~powerpc-add-support-for-folded-p4d-page-tables
+++ a/arch/powerpc/include/asm/book3s/64/hash.h
@@ -134,9 +134,9 @@ static inline int get_region_id(unsigned
#define hash__pmd_bad(pmd) (pmd_val(pmd) & H_PMD_BAD_BITS)
#define hash__pud_bad(pud) (pud_val(pud) & H_PUD_BAD_BITS)
-static inline int hash__pgd_bad(pgd_t pgd)
+static inline int hash__p4d_bad(p4d_t p4d)
{
- return (pgd_val(pgd) == 0);
+ return (p4d_val(p4d) == 0);
}
#ifdef CONFIG_STRICT_KERNEL_RWX
extern void hash__mark_rodata_ro(void);
--- a/arch/powerpc/include/asm/book3s/64/pgalloc.h~powerpc-add-support-for-folded-p4d-page-tables
+++ a/arch/powerpc/include/asm/book3s/64/pgalloc.h
@@ -85,9 +85,9 @@ static inline void pgd_free(struct mm_st
kmem_cache_free(PGT_CACHE(PGD_INDEX_SIZE), pgd);
}
-static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud)
+static inline void p4d_populate(struct mm_struct *mm, p4d_t *pgd, pud_t *pud)
{
- *pgd = __pgd(__pgtable_ptr_val(pud) | PGD_VAL_BITS);
+ *pgd = __p4d(__pgtable_ptr_val(pud) | PGD_VAL_BITS);
}
static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
--- a/arch/powerpc/include/asm/book3s/64/pgtable.h~powerpc-add-support-for-folded-p4d-page-tables
+++ a/arch/powerpc/include/asm/book3s/64/pgtable.h
@@ -2,7 +2,7 @@
#ifndef _ASM_POWERPC_BOOK3S_64_PGTABLE_H_
#define _ASM_POWERPC_BOOK3S_64_PGTABLE_H_
-#include <asm-generic/5level-fixup.h>
+#include <asm-generic/pgtable-nop4d.h>
#ifndef __ASSEMBLY__
#include <linux/mmdebug.h>
@@ -251,7 +251,7 @@ extern unsigned long __pmd_frag_size_shi
/* Bits to mask out from a PUD to get to the PMD page */
#define PUD_MASKED_BITS 0xc0000000000000ffUL
/* Bits to mask out from a PGD to get to the PUD page */
-#define PGD_MASKED_BITS 0xc0000000000000ffUL
+#define P4D_MASKED_BITS 0xc0000000000000ffUL
/*
* Used as an indicator for rcu callback functions
@@ -949,54 +949,60 @@ static inline bool pud_access_permitted(
return pte_access_permitted(pud_pte(pud), write);
}
-#define pgd_write(pgd) pte_write(pgd_pte(pgd))
+#define __p4d_raw(x) ((p4d_t) { __pgd_raw(x) })
+static inline __be64 p4d_raw(p4d_t x)
+{
+ return pgd_raw(x.pgd);
+}
+
+#define p4d_write(p4d) pte_write(p4d_pte(p4d))
-static inline void pgd_clear(pgd_t *pgdp)
+static inline void p4d_clear(p4d_t *p4dp)
{
- *pgdp = __pgd(0);
+ *p4dp = __p4d(0);
}
-static inline int pgd_none(pgd_t pgd)
+static inline int p4d_none(p4d_t p4d)
{
- return !pgd_raw(pgd);
+ return !p4d_raw(p4d);
}
-static inline int pgd_present(pgd_t pgd)
+static inline int p4d_present(p4d_t p4d)
{
- return !!(pgd_raw(pgd) & cpu_to_be64(_PAGE_PRESENT));
+ return !!(p4d_raw(p4d) & cpu_to_be64(_PAGE_PRESENT));
}
-static inline pte_t pgd_pte(pgd_t pgd)
+static inline pte_t p4d_pte(p4d_t p4d)
{
- return __pte_raw(pgd_raw(pgd));
+ return __pte_raw(p4d_raw(p4d));
}
-static inline pgd_t pte_pgd(pte_t pte)
+static inline p4d_t pte_p4d(pte_t pte)
{
- return __pgd_raw(pte_raw(pte));
+ return __p4d_raw(pte_raw(pte));
}
-static inline int pgd_bad(pgd_t pgd)
+static inline int p4d_bad(p4d_t p4d)
{
if (radix_enabled())
- return radix__pgd_bad(pgd);
- return hash__pgd_bad(pgd);
+ return radix__p4d_bad(p4d);
+ return hash__p4d_bad(p4d);
}
-#define pgd_access_permitted pgd_access_permitted
-static inline bool pgd_access_permitted(pgd_t pgd, bool write)
+#define p4d_access_permitted p4d_access_permitted
+static inline bool p4d_access_permitted(p4d_t p4d, bool write)
{
- return pte_access_permitted(pgd_pte(pgd), write);
+ return pte_access_permitted(p4d_pte(p4d), write);
}
-extern struct page *pgd_page(pgd_t pgd);
+extern struct page *p4d_page(p4d_t p4d);
/* Pointers in the page table tree are physical addresses */
#define __pgtable_ptr_val(ptr) __pa(ptr)
#define pmd_page_vaddr(pmd) __va(pmd_val(pmd) & ~PMD_MASKED_BITS)
#define pud_page_vaddr(pud) __va(pud_val(pud) & ~PUD_MASKED_BITS)
-#define pgd_page_vaddr(pgd) __va(pgd_val(pgd) & ~PGD_MASKED_BITS)
+#define p4d_page_vaddr(p4d) __va(p4d_val(p4d) & ~P4D_MASKED_BITS)
#define pgd_index(address) (((address) >> (PGDIR_SHIFT)) & (PTRS_PER_PGD - 1))
#define pud_index(address) (((address) >> (PUD_SHIFT)) & (PTRS_PER_PUD - 1))
@@ -1010,8 +1016,8 @@ extern struct page *pgd_page(pgd_t pgd);
#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
-#define pud_offset(pgdp, addr) \
- (((pud_t *) pgd_page_vaddr(*(pgdp))) + pud_index(addr))
+#define pud_offset(p4dp, addr) \
+ (((pud_t *) p4d_page_vaddr(*(p4dp))) + pud_index(addr))
#define pmd_offset(pudp,addr) \
(((pmd_t *) pud_page_vaddr(*(pudp))) + pmd_index(addr))
#define pte_offset_kernel(dir,addr) \
@@ -1366,11 +1372,11 @@ static inline bool pud_is_leaf(pud_t pud
return !!(pud_raw(pud) & cpu_to_be64(_PAGE_PTE));
}
-#define pgd_is_leaf pgd_is_leaf
-#define pgd_leaf pgd_is_leaf
-static inline bool pgd_is_leaf(pgd_t pgd)
+#define p4d_is_leaf p4d_is_leaf
+#define p4d_leaf p4d_is_leaf
+static inline bool p4d_is_leaf(p4d_t p4d)
{
- return !!(pgd_raw(pgd) & cpu_to_be64(_PAGE_PTE));
+ return !!(p4d_raw(p4d) & cpu_to_be64(_PAGE_PTE));
}
#endif /* __ASSEMBLY__ */
--- a/arch/powerpc/include/asm/book3s/64/radix.h~powerpc-add-support-for-folded-p4d-page-tables
+++ a/arch/powerpc/include/asm/book3s/64/radix.h
@@ -30,7 +30,7 @@
/* Don't have anything in the reserved bits and leaf bits */
#define RADIX_PMD_BAD_BITS 0x60000000000000e0UL
#define RADIX_PUD_BAD_BITS 0x60000000000000e0UL
-#define RADIX_PGD_BAD_BITS 0x60000000000000e0UL
+#define RADIX_P4D_BAD_BITS 0x60000000000000e0UL
#define RADIX_PMD_SHIFT (PAGE_SHIFT + RADIX_PTE_INDEX_SIZE)
#define RADIX_PUD_SHIFT (RADIX_PMD_SHIFT + RADIX_PMD_INDEX_SIZE)
@@ -227,9 +227,9 @@ static inline int radix__pud_bad(pud_t p
}
-static inline int radix__pgd_bad(pgd_t pgd)
+static inline int radix__p4d_bad(p4d_t p4d)
{
- return !!(pgd_val(pgd) & RADIX_PGD_BAD_BITS);
+ return !!(p4d_val(p4d) & RADIX_P4D_BAD_BITS);
}
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
--- a/arch/powerpc/include/asm/nohash/32/pgtable.h~powerpc-add-support-for-folded-p4d-page-tables
+++ a/arch/powerpc/include/asm/nohash/32/pgtable.h
@@ -2,7 +2,6 @@
#ifndef _ASM_POWERPC_NOHASH_32_PGTABLE_H
#define _ASM_POWERPC_NOHASH_32_PGTABLE_H
-#define __ARCH_USE_5LEVEL_HACK
#include <asm-generic/pgtable-nopmd.h>
#ifndef __ASSEMBLY__
--- a/arch/powerpc/include/asm/nohash/64/pgalloc.h~powerpc-add-support-for-folded-p4d-page-tables
+++ a/arch/powerpc/include/asm/nohash/64/pgalloc.h
@@ -15,7 +15,7 @@ struct vmemmap_backing {
};
extern struct vmemmap_backing *vmemmap_list;
-#define pgd_populate(MM, PGD, PUD) pgd_set(PGD, (unsigned long)PUD)
+#define p4d_populate(MM, P4D, PUD) p4d_set(P4D, (unsigned long)PUD)
static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
{
--- a/arch/powerpc/include/asm/nohash/64/pgtable-4k.h~powerpc-add-support-for-folded-p4d-page-tables
+++ a/arch/powerpc/include/asm/nohash/64/pgtable-4k.h
@@ -2,7 +2,7 @@
#ifndef _ASM_POWERPC_NOHASH_64_PGTABLE_4K_H
#define _ASM_POWERPC_NOHASH_64_PGTABLE_4K_H
-#include <asm-generic/5level-fixup.h>
+#include <asm-generic/pgtable-nop4d.h>
/*
* Entries per page directory level. The PTE level must use a 64b record
@@ -45,41 +45,41 @@
#define PMD_MASKED_BITS 0
/* Bits to mask out from a PUD to get to the PMD page */
#define PUD_MASKED_BITS 0
-/* Bits to mask out from a PGD to get to the PUD page */
-#define PGD_MASKED_BITS 0
+/* Bits to mask out from a P4D to get to the PUD page */
+#define P4D_MASKED_BITS 0
/*
* 4-level page tables related bits
*/
-#define pgd_none(pgd) (!pgd_val(pgd))
-#define pgd_bad(pgd) (pgd_val(pgd) == 0)
-#define pgd_present(pgd) (pgd_val(pgd) != 0)
-#define pgd_page_vaddr(pgd) (pgd_val(pgd) & ~PGD_MASKED_BITS)
+#define p4d_none(p4d) (!p4d_val(p4d))
+#define p4d_bad(p4d) (p4d_val(p4d) == 0)
+#define p4d_present(p4d) (p4d_val(p4d) != 0)
+#define p4d_page_vaddr(p4d) (p4d_val(p4d) & ~P4D_MASKED_BITS)
#ifndef __ASSEMBLY__
-static inline void pgd_clear(pgd_t *pgdp)
+static inline void p4d_clear(p4d_t *p4dp)
{
- *pgdp = __pgd(0);
+ *p4dp = __p4d(0);
}
-static inline pte_t pgd_pte(pgd_t pgd)
+static inline pte_t p4d_pte(p4d_t p4d)
{
- return __pte(pgd_val(pgd));
+ return __pte(p4d_val(p4d));
}
-static inline pgd_t pte_pgd(pte_t pte)
+static inline p4d_t pte_p4d(pte_t pte)
{
- return __pgd(pte_val(pte));
+ return __p4d(pte_val(pte));
}
-extern struct page *pgd_page(pgd_t pgd);
+extern struct page *p4d_page(p4d_t p4d);
#endif /* !__ASSEMBLY__ */
-#define pud_offset(pgdp, addr) \
- (((pud_t *) pgd_page_vaddr(*(pgdp))) + \
+#define pud_offset(p4dp, addr) \
+ (((pud_t *) p4d_page_vaddr(*(p4dp))) + \
(((addr) >> PUD_SHIFT) & (PTRS_PER_PUD - 1)))
#define pud_ERROR(e) \
--- a/arch/powerpc/include/asm/nohash/64/pgtable.h~powerpc-add-support-for-folded-p4d-page-tables
+++ a/arch/powerpc/include/asm/nohash/64/pgtable.h
@@ -175,11 +175,11 @@ static inline pud_t pte_pud(pte_t pte)
return __pud(pte_val(pte));
}
#define pud_write(pud) pte_write(pud_pte(pud))
-#define pgd_write(pgd) pte_write(pgd_pte(pgd))
+#define p4d_write(pgd) pte_write(p4d_pte(p4d))
-static inline void pgd_set(pgd_t *pgdp, unsigned long val)
+static inline void p4d_set(p4d_t *p4dp, unsigned long val)
{
- *pgdp = __pgd(val);
+ *p4dp = __p4d(val);
}
/*
--- a/arch/powerpc/include/asm/pgtable.h~powerpc-add-support-for-folded-p4d-page-tables
+++ a/arch/powerpc/include/asm/pgtable.h
@@ -44,12 +44,12 @@ struct mm_struct;
#ifdef CONFIG_PPC32
static inline pmd_t *pmd_ptr(struct mm_struct *mm, unsigned long va)
{
- return pmd_offset(pud_offset(pgd_offset(mm, va), va), va);
+ return pmd_offset(pud_offset(p4d_offset(pgd_offset(mm, va), va), va), va);
}
static inline pmd_t *pmd_ptr_k(unsigned long va)
{
- return pmd_offset(pud_offset(pgd_offset_k(va), va), va);
+ return pmd_offset(pud_offset(p4d_offset(pgd_offset_k(va), va), va), va);
}
static inline pte_t *virt_to_kpte(unsigned long vaddr)
@@ -158,9 +158,9 @@ static inline bool pud_is_leaf(pud_t pud
}
#endif
-#ifndef pgd_is_leaf
-#define pgd_is_leaf pgd_is_leaf
-static inline bool pgd_is_leaf(pgd_t pgd)
+#ifndef p4d_is_leaf
+#define p4d_is_leaf p4d_is_leaf
+static inline bool p4d_is_leaf(p4d_t p4d)
{
return false;
}
--- a/arch/powerpc/kvm/book3s_64_mmu_radix.c~powerpc-add-support-for-folded-p4d-page-tables
+++ a/arch/powerpc/kvm/book3s_64_mmu_radix.c
@@ -499,13 +499,14 @@ void kvmppc_free_pgtable_radix(struct kv
unsigned long ig;
for (ig = 0; ig < PTRS_PER_PGD; ++ig, ++pgd) {
+ p4d_t *p4d = p4d_offset(pgd, 0);
pud_t *pud;
- if (!pgd_present(*pgd))
+ if (!p4d_present(*p4d))
continue;
- pud = pud_offset(pgd, 0);
+ pud = pud_offset(p4d, 0);
kvmppc_unmap_free_pud(kvm, pud, lpid);
- pgd_clear(pgd);
+ p4d_clear(p4d);
}
}
@@ -566,6 +567,7 @@ int kvmppc_create_pte(struct kvm *kvm, p
unsigned long *rmapp, struct rmap_nested **n_rmap)
{
pgd_t *pgd;
+ p4d_t *p4d;
pud_t *pud, *new_pud = NULL;
pmd_t *pmd, *new_pmd = NULL;
pte_t *ptep, *new_ptep = NULL;
@@ -573,9 +575,11 @@ int kvmppc_create_pte(struct kvm *kvm, p
/* Traverse the guest's 2nd-level tree, allocate new levels needed */
pgd = pgtable + pgd_index(gpa);
+ p4d = p4d_offset(pgd, gpa);
+
pud = NULL;
- if (pgd_present(*pgd))
- pud = pud_offset(pgd, gpa);
+ if (p4d_present(*p4d))
+ pud = pud_offset(p4d, gpa);
else
new_pud = pud_alloc_one(kvm->mm, gpa);
@@ -596,13 +600,13 @@ int kvmppc_create_pte(struct kvm *kvm, p
/* Now traverse again under the lock and change the tree */
ret = -ENOMEM;
- if (pgd_none(*pgd)) {
+ if (p4d_none(*p4d)) {
if (!new_pud)
goto out_unlock;
- pgd_populate(kvm->mm, pgd, new_pud);
+ p4d_populate(kvm->mm, p4d, new_pud);
new_pud = NULL;
}
- pud = pud_offset(pgd, gpa);
+ pud = pud_offset(p4d, gpa);
if (pud_is_leaf(*pud)) {
unsigned long hgpa = gpa & PUD_MASK;
@@ -1220,7 +1224,8 @@ static ssize_t debugfs_radix_read(struct
unsigned long gpa;
pgd_t *pgt;
struct kvm_nested_guest *nested;
- pgd_t pgd, *pgdp;
+ pgd_t *pgdp;
+ p4d_t p4d, *p4dp;
pud_t pud, *pudp;
pmd_t pmd, *pmdp;
pte_t *ptep;
@@ -1293,13 +1298,14 @@ static ssize_t debugfs_radix_read(struct
}
pgdp = pgt + pgd_index(gpa);
- pgd = READ_ONCE(*pgdp);
- if (!(pgd_val(pgd) & _PAGE_PRESENT)) {
- gpa = (gpa & PGDIR_MASK) + PGDIR_SIZE;
+ p4dp = p4d_offset(pgdp, gpa);
+ p4d = READ_ONCE(*p4dp);
+ if (!(p4d_val(p4d) & _PAGE_PRESENT)) {
+ gpa = (gpa & P4D_MASK) + P4D_SIZE;
continue;
}
- pudp = pud_offset(&pgd, gpa);
+ pudp = pud_offset(&p4d, gpa);
pud = READ_ONCE(*pudp);
if (!(pud_val(pud) & _PAGE_PRESENT)) {
gpa = (gpa & PUD_MASK) + PUD_SIZE;
--- a/arch/powerpc/lib/code-patching.c~powerpc-add-support-for-folded-p4d-page-tables
+++ a/arch/powerpc/lib/code-patching.c
@@ -107,13 +107,18 @@ static inline int unmap_patch_area(unsig
pte_t *ptep;
pmd_t *pmdp;
pud_t *pudp;
+ p4d_t *p4dp;
pgd_t *pgdp;
pgdp = pgd_offset_k(addr);
if (unlikely(!pgdp))
return -EINVAL;
- pudp = pud_offset(pgdp, addr);
+ p4dp = p4d_offset(pgdp, addr);
+ if (unlikely(!p4dp))
+ return -EINVAL;
+
+ pudp = pud_offset(p4dp, addr);
if (unlikely(!pudp))
return -EINVAL;
--- a/arch/powerpc/mm/book3s64/hash_pgtable.c~powerpc-add-support-for-folded-p4d-page-tables
+++ a/arch/powerpc/mm/book3s64/hash_pgtable.c
@@ -148,6 +148,7 @@ void hash__vmemmap_remove_mapping(unsign
int hash__map_kernel_page(unsigned long ea, unsigned long pa, pgprot_t prot)
{
pgd_t *pgdp;
+ p4d_t *p4dp;
pud_t *pudp;
pmd_t *pmdp;
pte_t *ptep;
@@ -155,7 +156,8 @@ int hash__map_kernel_page(unsigned long
BUILD_BUG_ON(TASK_SIZE_USER64 > H_PGTABLE_RANGE);
if (slab_is_available()) {
pgdp = pgd_offset_k(ea);
- pudp = pud_alloc(&init_mm, pgdp, ea);
+ p4dp = p4d_offset(pgdp, ea);
+ pudp = pud_alloc(&init_mm, p4dp, ea);
if (!pudp)
return -ENOMEM;
pmdp = pmd_alloc(&init_mm, pudp, ea);
--- a/arch/powerpc/mm/book3s64/radix_pgtable.c~powerpc-add-support-for-folded-p4d-page-tables
+++ a/arch/powerpc/mm/book3s64/radix_pgtable.c
@@ -65,17 +65,19 @@ static int early_map_kernel_page(unsigne
{
unsigned long pfn = pa >> PAGE_SHIFT;
pgd_t *pgdp;
+ p4d_t *p4dp;
pud_t *pudp;
pmd_t *pmdp;
pte_t *ptep;
pgdp = pgd_offset_k(ea);
- if (pgd_none(*pgdp)) {
+ p4dp = p4d_offset(pgdp, ea);
+ if (p4d_none(*p4dp)) {
pudp = early_alloc_pgtable(PUD_TABLE_SIZE, nid,
region_start, region_end);
- pgd_populate(&init_mm, pgdp, pudp);
+ p4d_populate(&init_mm, p4dp, pudp);
}
- pudp = pud_offset(pgdp, ea);
+ pudp = pud_offset(p4dp, ea);
if (map_page_size == PUD_SIZE) {
ptep = (pte_t *)pudp;
goto set_the_pte;
@@ -115,6 +117,7 @@ static int __map_kernel_page(unsigned lo
{
unsigned long pfn = pa >> PAGE_SHIFT;
pgd_t *pgdp;
+ p4d_t *p4dp;
pud_t *pudp;
pmd_t *pmdp;
pte_t *ptep;
@@ -137,7 +140,8 @@ static int __map_kernel_page(unsigned lo
* boot.
*/
pgdp = pgd_offset_k(ea);
- pudp = pud_alloc(&init_mm, pgdp, ea);
+ p4dp = p4d_offset(pgdp, ea);
+ pudp = pud_alloc(&init_mm, p4dp, ea);
if (!pudp)
return -ENOMEM;
if (map_page_size == PUD_SIZE) {
@@ -174,6 +178,7 @@ void radix__change_memory_range(unsigned
{
unsigned long idx;
pgd_t *pgdp;
+ p4d_t *p4dp;
pud_t *pudp;
pmd_t *pmdp;
pte_t *ptep;
@@ -186,7 +191,8 @@ void radix__change_memory_range(unsigned
for (idx = start; idx < end; idx += PAGE_SIZE) {
pgdp = pgd_offset_k(idx);
- pudp = pud_alloc(&init_mm, pgdp, idx);
+ p4dp = p4d_offset(pgdp, idx);
+ pudp = pud_alloc(&init_mm, p4dp, idx);
if (!pudp)
continue;
if (pud_is_leaf(*pudp)) {
@@ -850,6 +856,7 @@ static void __meminit remove_pagetable(u
unsigned long addr, next;
pud_t *pud_base;
pgd_t *pgd;
+ p4d_t *p4d;
spin_lock(&init_mm.page_table_lock);
@@ -857,15 +864,16 @@ static void __meminit remove_pagetable(u
next = pgd_addr_end(addr, end);
pgd = pgd_offset_k(addr);
- if (!pgd_present(*pgd))
+ p4d = p4d_offset(pgd, addr);
+ if (!p4d_present(*p4d))
continue;
- if (pgd_is_leaf(*pgd)) {
- split_kernel_mapping(addr, end, PGDIR_SIZE, (pte_t *)pgd);
+ if (p4d_is_leaf(*p4d)) {
+ split_kernel_mapping(addr, end, P4D_SIZE, (pte_t *)p4d);
continue;
}
- pud_base = (pud_t *)pgd_page_vaddr(*pgd);
+ pud_base = (pud_t *)p4d_page_vaddr(*p4d);
remove_pud_table(pud_base, addr, next);
}
--- a/arch/powerpc/mm/book3s64/subpage_prot.c~powerpc-add-support-for-folded-p4d-page-tables
+++ a/arch/powerpc/mm/book3s64/subpage_prot.c
@@ -54,15 +54,17 @@ static void hpte_flush_range(struct mm_s
int npages)
{
pgd_t *pgd;
+ p4d_t *p4d;
pud_t *pud;
pmd_t *pmd;
pte_t *pte;
spinlock_t *ptl;
pgd = pgd_offset(mm, addr);
- if (pgd_none(*pgd))
+ p4d = p4d_offset(pgd, addr);
+ if (p4d_none(*p4d))
return;
- pud = pud_offset(pgd, addr);
+ pud = pud_offset(p4d, addr);
if (pud_none(*pud))
return;
pmd = pmd_offset(pud, addr);
--- a/arch/powerpc/mm/hugetlbpage.c~powerpc-add-support-for-folded-p4d-page-tables
+++ a/arch/powerpc/mm/hugetlbpage.c
@@ -119,6 +119,7 @@ static int __hugepte_alloc(struct mm_str
pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr, unsigned long sz)
{
pgd_t *pg;
+ p4d_t *p4;
pud_t *pu;
pmd_t *pm;
hugepd_t *hpdp = NULL;
@@ -128,20 +129,21 @@ pte_t *huge_pte_alloc(struct mm_struct *
addr &= ~(sz-1);
pg = pgd_offset(mm, addr);
+ p4 = p4d_offset(pg, addr);
#ifdef CONFIG_PPC_BOOK3S_64
if (pshift == PGDIR_SHIFT)
/* 16GB huge page */
- return (pte_t *) pg;
+ return (pte_t *) p4;
else if (pshift > PUD_SHIFT) {
/*
* We need to use hugepd table
*/
ptl = &mm->page_table_lock;
- hpdp = (hugepd_t *)pg;
+ hpdp = (hugepd_t *)p4;
} else {
pdshift = PUD_SHIFT;
- pu = pud_alloc(mm, pg, addr);
+ pu = pud_alloc(mm, p4, addr);
if (!pu)
return NULL;
if (pshift == PUD_SHIFT)
@@ -166,10 +168,10 @@ pte_t *huge_pte_alloc(struct mm_struct *
#else
if (pshift >= PGDIR_SHIFT) {
ptl = &mm->page_table_lock;
- hpdp = (hugepd_t *)pg;
+ hpdp = (hugepd_t *)p4;
} else {
pdshift = PUD_SHIFT;
- pu = pud_alloc(mm, pg, addr);
+ pu = pud_alloc(mm, p4, addr);
if (!pu)
return NULL;
if (pshift >= PUD_SHIFT) {
@@ -390,7 +392,7 @@ static void hugetlb_free_pmd_range(struc
mm_dec_nr_pmds(tlb->mm);
}
-static void hugetlb_free_pud_range(struct mmu_gather *tlb, pgd_t *pgd,
+static void hugetlb_free_pud_range(struct mmu_gather *tlb, p4d_t *p4d,
unsigned long addr, unsigned long end,
unsigned long floor, unsigned long ceiling)
{
@@ -400,7 +402,7 @@ static void hugetlb_free_pud_range(struc
start = addr;
do {
- pud = pud_offset(pgd, addr);
+ pud = pud_offset(p4d, addr);
next = pud_addr_end(addr, end);
if (!is_hugepd(__hugepd(pud_val(*pud)))) {
if (pud_none_or_clear_bad(pud))
@@ -435,8 +437,8 @@ static void hugetlb_free_pud_range(struc
if (end - 1 > ceiling - 1)
return;
- pud = pud_offset(pgd, start);
- pgd_clear(pgd);
+ pud = pud_offset(p4d, start);
+ p4d_clear(p4d);
pud_free_tlb(tlb, pud, start);
mm_dec_nr_puds(tlb->mm);
}
@@ -449,6 +451,7 @@ void hugetlb_free_pgd_range(struct mmu_g
unsigned long floor, unsigned long ceiling)
{
pgd_t *pgd;
+ p4d_t *p4d;
unsigned long next;
/*
@@ -471,10 +474,11 @@ void hugetlb_free_pgd_range(struct mmu_g
do {
next = pgd_addr_end(addr, end);
pgd = pgd_offset(tlb->mm, addr);
+ p4d = p4d_offset(pgd, addr);
if (!is_hugepd(__hugepd(pgd_val(*pgd)))) {
- if (pgd_none_or_clear_bad(pgd))
+ if (p4d_none_or_clear_bad(p4d))
continue;
- hugetlb_free_pud_range(tlb, pgd, addr, next, floor, ceiling);
+ hugetlb_free_pud_range(tlb, p4d, addr, next, floor, ceiling);
} else {
unsigned long more;
/*
@@ -487,7 +491,7 @@ void hugetlb_free_pgd_range(struct mmu_g
if (more > next)
next = more;
- free_hugepd_range(tlb, (hugepd_t *)pgd, PGDIR_SHIFT,
+ free_hugepd_range(tlb, (hugepd_t *)p4d, PGDIR_SHIFT,
addr, next, floor, ceiling);
}
} while (addr = next, addr != end);
--- a/arch/powerpc/mm/kasan/kasan_init_32.c~powerpc-add-support-for-folded-p4d-page-tables
+++ a/arch/powerpc/mm/kasan/kasan_init_32.c
@@ -121,7 +121,7 @@ static void __init kasan_unmap_early_sha
phys_addr_t pa = __pa(kasan_early_shadow_page);
for (k_cur = k_start & PAGE_MASK; k_cur < k_end; k_cur += PAGE_SIZE) {
- pmd_t *pmd = pmd_offset(pud_offset(pgd_offset_k(k_cur), k_cur), k_cur);
+ pmd_t *pmd = pmd_ptr_k(k_cur);
pte_t *ptep = pte_offset_kernel(pmd, k_cur);
if ((pte_val(*ptep) & PTE_RPN_MASK) != pa)
--- a/arch/powerpc/mm/nohash/book3e_pgtable.c~powerpc-add-support-for-folded-p4d-page-tables
+++ a/arch/powerpc/mm/nohash/book3e_pgtable.c
@@ -73,6 +73,7 @@ static void __init *early_alloc_pgtable(
int __ref map_kernel_page(unsigned long ea, unsigned long pa, pgprot_t prot)
{
pgd_t *pgdp;
+ p4d_t *p4dp;
pud_t *pudp;
pmd_t *pmdp;
pte_t *ptep;
@@ -80,7 +81,8 @@ int __ref map_kernel_page(unsigned long
BUILD_BUG_ON(TASK_SIZE_USER64 > PGTABLE_RANGE);
if (slab_is_available()) {
pgdp = pgd_offset_k(ea);
- pudp = pud_alloc(&init_mm, pgdp, ea);
+ p4dp = p4d_offset(pgdp, ea);
+ pudp = pud_alloc(&init_mm, p4dp, ea);
if (!pudp)
return -ENOMEM;
pmdp = pmd_alloc(&init_mm, pudp, ea);
@@ -91,13 +93,12 @@ int __ref map_kernel_page(unsigned long
return -ENOMEM;
} else {
pgdp = pgd_offset_k(ea);
-#ifndef __PAGETABLE_PUD_FOLDED
- if (pgd_none(*pgdp)) {
- pudp = early_alloc_pgtable(PUD_TABLE_SIZE);
- pgd_populate(&init_mm, pgdp, pudp);
+ p4dp = p4d_offset(pgdp, ea);
+ if (p4d_none(*p4dp)) {
+ pmdp = early_alloc_pgtable(PMD_TABLE_SIZE);
+ p4d_populate(&init_mm, p4dp, pmdp);
}
-#endif /* !__PAGETABLE_PUD_FOLDED */
- pudp = pud_offset(pgdp, ea);
+ pudp = pud_offset(p4dp, ea);
if (pud_none(*pudp)) {
pmdp = early_alloc_pgtable(PMD_TABLE_SIZE);
pud_populate(&init_mm, pudp, pmdp);
--- a/arch/powerpc/mm/pgtable_64.c~powerpc-add-support-for-folded-p4d-page-tables
+++ a/arch/powerpc/mm/pgtable_64.c
@@ -101,13 +101,13 @@ EXPORT_SYMBOL(__pte_frag_size_shift);
#ifndef __PAGETABLE_PUD_FOLDED
/* 4 level page table */
-struct page *pgd_page(pgd_t pgd)
+struct page *p4d_page(p4d_t p4d)
{
- if (pgd_is_leaf(pgd)) {
- VM_WARN_ON(!pgd_huge(pgd));
- return pte_page(pgd_pte(pgd));
+ if (p4d_is_leaf(p4d)) {
+ VM_WARN_ON(!p4d_huge(p4d));
+ return pte_page(p4d_pte(p4d));
}
- return virt_to_page(pgd_page_vaddr(pgd));
+ return virt_to_page(p4d_page_vaddr(p4d));
}
#endif
--- a/arch/powerpc/mm/pgtable.c~powerpc-add-support-for-folded-p4d-page-tables
+++ a/arch/powerpc/mm/pgtable.c
@@ -265,6 +265,7 @@ int huge_ptep_set_access_flags(struct vm
void assert_pte_locked(struct mm_struct *mm, unsigned long addr)
{
pgd_t *pgd;
+ p4d_t *p4d;
pud_t *pud;
pmd_t *pmd;
@@ -272,7 +273,9 @@ void assert_pte_locked(struct mm_struct
return;
pgd = mm->pgd + pgd_index(addr);
BUG_ON(pgd_none(*pgd));
- pud = pud_offset(pgd, addr);
+ p4d = p4d_offset(pgd, addr);
+ BUG_ON(p4d_none(*p4d));
+ pud = pud_offset(p4d, addr);
BUG_ON(pud_none(*pud));
pmd = pmd_offset(pud, addr);
/*
@@ -312,12 +315,13 @@ EXPORT_SYMBOL_GPL(vmalloc_to_phys);
pte_t *__find_linux_pte(pgd_t *pgdir, unsigned long ea,
bool *is_thp, unsigned *hpage_shift)
{
- pgd_t pgd, *pgdp;
+ pgd_t *pgdp;
+ p4d_t p4d, *p4dp;
pud_t pud, *pudp;
pmd_t pmd, *pmdp;
pte_t *ret_pte;
hugepd_t *hpdp = NULL;
- unsigned pdshift = PGDIR_SHIFT;
+ unsigned pdshift;
if (hpage_shift)
*hpage_shift = 0;
@@ -325,24 +329,28 @@ pte_t *__find_linux_pte(pgd_t *pgdir, un
if (is_thp)
*is_thp = false;
- pgdp = pgdir + pgd_index(ea);
- pgd = READ_ONCE(*pgdp);
/*
* Always operate on the local stack value. This make sure the
* value don't get updated by a parallel THP split/collapse,
* page fault or a page unmap. The return pte_t * is still not
* stable. So should be checked there for above conditions.
+ * Top level is an exception because it is folded into p4d.
*/
- if (pgd_none(pgd))
+ pgdp = pgdir + pgd_index(ea);
+ p4dp = p4d_offset(pgdp, ea);
+ p4d = READ_ONCE(*p4dp);
+ pdshift = P4D_SHIFT;
+
+ if (p4d_none(p4d))
return NULL;
- if (pgd_is_leaf(pgd)) {
- ret_pte = (pte_t *)pgdp;
+ if (p4d_is_leaf(p4d)) {
+ ret_pte = (pte_t *)p4dp;
goto out;
}
- if (is_hugepd(__hugepd(pgd_val(pgd)))) {
- hpdp = (hugepd_t *)&pgd;
+ if (is_hugepd(__hugepd(p4d_val(p4d)))) {
+ hpdp = (hugepd_t *)&p4d;
goto out_huge;
}
@@ -352,7 +360,7 @@ pte_t *__find_linux_pte(pgd_t *pgdir, un
* irq disabled
*/
pdshift = PUD_SHIFT;
- pudp = pud_offset(&pgd, ea);
+ pudp = pud_offset(&p4d, ea);
pud = READ_ONCE(*pudp);
if (pud_none(pud))
--- a/arch/powerpc/mm/ptdump/hashpagetable.c~powerpc-add-support-for-folded-p4d-page-tables
+++ a/arch/powerpc/mm/ptdump/hashpagetable.c
@@ -417,9 +417,9 @@ static void walk_pmd(struct pg_state *st
}
}
-static void walk_pud(struct pg_state *st, pgd_t *pgd, unsigned long start)
+static void walk_pud(struct pg_state *st, p4d_t *p4d, unsigned long start)
{
- pud_t *pud = pud_offset(pgd, 0);
+ pud_t *pud = pud_offset(p4d, 0);
unsigned long addr;
unsigned int i;
@@ -431,6 +431,20 @@ static void walk_pud(struct pg_state *st
}
}
+static void walk_p4d(struct pg_state *st, pgd_t *pgd, unsigned long start)
+{
+ p4d_t *p4d = p4d_offset(pgd, 0);
+ unsigned long addr;
+ unsigned int i;
+
+ for (i = 0; i < PTRS_PER_P4D; i++, p4d++) {
+ addr = start + i * P4D_SIZE;
+ if (!p4d_none(*p4d))
+ /* p4d exists */
+ walk_pud(st, p4d, addr);
+ }
+}
+
static void walk_pagetables(struct pg_state *st)
{
pgd_t *pgd = pgd_offset_k(0UL);
@@ -445,7 +459,7 @@ static void walk_pagetables(struct pg_st
addr = KERN_VIRT_START + i * PGDIR_SIZE;
if (!pgd_none(*pgd))
/* pgd exists */
- walk_pud(st, pgd, addr);
+ walk_p4d(st, pgd, addr);
}
}
--- a/arch/powerpc/mm/ptdump/ptdump.c~powerpc-add-support-for-folded-p4d-page-tables
+++ a/arch/powerpc/mm/ptdump/ptdump.c
@@ -277,9 +277,9 @@ static void walk_pmd(struct pg_state *st
}
}
-static void walk_pud(struct pg_state *st, pgd_t *pgd, unsigned long start)
+static void walk_pud(struct pg_state *st, p4d_t *p4d, unsigned long start)
{
- pud_t *pud = pud_offset(pgd, 0);
+ pud_t *pud = pud_offset(p4d, 0);
unsigned long addr;
unsigned int i;
@@ -304,11 +304,13 @@ static void walk_pagetables(struct pg_st
* the hash pagetable.
*/
for (i = pgd_index(addr); i < PTRS_PER_PGD; i++, pgd++, addr += PGDIR_SIZE) {
- if (!pgd_none(*pgd) && !pgd_is_leaf(*pgd))
+ p4d_t *p4d = p4d_offset(pgd, 0);
+
+ if (!p4d_none(*p4d) && !p4d_is_leaf(*p4d))
/* pgd exists */
- walk_pud(st, pgd, addr);
+ walk_pud(st, p4d, addr);
else
- note_page(st, addr, 1, pgd_val(*pgd));
+ note_page(st, addr, 1, p4d_val(*p4d));
}
}
--- a/arch/powerpc/xmon/xmon.c~powerpc-add-support-for-folded-p4d-page-tables
+++ a/arch/powerpc/xmon/xmon.c
@@ -3135,7 +3135,8 @@ static void show_pte(unsigned long addr)
unsigned long tskv = 0;
struct task_struct *tsk = NULL;
struct mm_struct *mm;
- pgd_t *pgdp, *pgdir;
+ pgd_t *pgdp;
+ p4d_t *p4dp;
pud_t *pudp;
pmd_t *pmdp;
pte_t *ptep;
@@ -3159,28 +3160,26 @@ static void show_pte(unsigned long addr)
catch_memory_errors = 1;
sync();
- if (mm == &init_mm) {
+ if (mm == &init_mm)
pgdp = pgd_offset_k(addr);
- pgdir = pgd_offset_k(0);
- } else {
+ else
pgdp = pgd_offset(mm, addr);
- pgdir = pgd_offset(mm, 0);
- }
- if (pgd_none(*pgdp)) {
- printf("no linux page table for address\n");
+ p4dp = p4d_offset(pgdp, addr);
+
+ if (p4d_none(*p4dp)) {
+ printf("No valid P4D\n");
return;
}
- printf("pgd @ 0x%px\n", pgdir);
-
- if (pgd_is_leaf(*pgdp)) {
- format_pte(pgdp, pgd_val(*pgdp));
+ if (p4d_is_leaf(*p4dp)) {
+ format_pte(p4dp, p4d_val(*p4dp));
return;
}
- printf("pgdp @ 0x%px = 0x%016lx\n", pgdp, pgd_val(*pgdp));
- pudp = pud_offset(pgdp, addr);
+ printf("p4dp @ 0x%px = 0x%016lx\n", p4dp, p4d_val(*p4dp));
+
+ pudp = pud_offset(p4dp, addr);
if (pud_none(*pudp)) {
printf("No valid PUD\n");
_
next prev parent reply other threads:[~2020-06-04 23:46 UTC|newest]
Thread overview: 129+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-04 23:45 incoming Andrew Morton
2020-06-04 23:45 ` [patch 001/127] kcov: cleanup debug messages Andrew Morton
2020-06-04 23:45 ` [patch 002/127] kcov: fix potential use-after-free in kcov_remote_start Andrew Morton
2020-06-04 23:45 ` [patch 003/127] kcov: move t->kcov assignments into kcov_start/stop Andrew Morton
2020-06-04 23:45 ` [patch 004/127] kcov: move t->kcov_sequence assignment Andrew Morton
2020-06-04 23:46 ` [patch 005/127] kcov: use t->kcov_mode as enabled indicator Andrew Morton
2020-06-04 23:46 ` [patch 006/127] kcov: collect coverage from interrupts Andrew Morton
2020-06-04 23:46 ` [patch 007/127] usb: core: kcov: collect coverage from usb complete callback Andrew Morton
2020-06-04 23:46 ` [patch 008/127] mm/util.c: remove the VM_WARN_ONCE for vm_committed_as underflow check Andrew Morton
2020-06-04 23:46 ` [patch 009/127] h8300: remove usage of __ARCH_USE_5LEVEL_HACK Andrew Morton
2020-06-04 23:46 ` [patch 010/127] arm: add support for folded p4d page tables Andrew Morton
2020-06-04 23:46 ` [patch 011/127] arm64: " Andrew Morton
2020-06-04 23:46 ` [patch 012/127] hexagon: remove __ARCH_USE_5LEVEL_HACK Andrew Morton
2020-06-04 23:46 ` [patch 013/127] ia64: add support for folded p4d page tables Andrew Morton
2020-06-04 23:46 ` [patch 014/127] nios2: " Andrew Morton
2020-06-04 23:46 ` [patch 015/127] openrisc: " Andrew Morton
2020-06-04 23:46 ` Andrew Morton [this message]
2020-06-04 23:46 ` [patch 017/127] sh: fault: modernize printing of kernel messages Andrew Morton
2020-06-04 23:46 ` [patch 018/127] sh: drop __pXd_offset() macros that duplicate pXd_index() ones Andrew Morton
2020-06-04 23:46 ` [patch 019/127] sh: add support for folded p4d page tables Andrew Morton
2020-06-04 23:47 ` [patch 020/127] unicore32: remove __ARCH_USE_5LEVEL_HACK Andrew Morton
2020-06-04 23:47 ` [patch 021/127] asm-generic: remove pgtable-nop4d-hack.h Andrew Morton
2020-06-04 23:47 ` [patch 022/127] mm: remove __ARCH_HAS_5LEVEL_HACK and include/asm-generic/5level-fixup.h Andrew Morton
2020-06-04 23:47 ` [patch 023/127] x86/mm: define mm_p4d_folded() Andrew Morton
2020-06-04 23:47 ` [patch 024/127] mm/debug: add tests validating architecture page table helpers Andrew Morton
2020-06-04 23:47 ` [patch 025/127] mm/vmalloc: fix a typo in comment Andrew Morton
2020-06-04 23:47 ` [patch 026/127] arch/kmap: remove BUG_ON() Andrew Morton
2020-06-04 23:47 ` [patch 027/127] arch/xtensa: move kmap build bug out of the way Andrew Morton
2020-06-04 23:47 ` [patch 028/127] arch/kmap: remove redundant arch specific kmaps Andrew Morton
2020-06-04 23:47 ` [patch 029/127] arch/kunmap: remove duplicate kunmap implementations Andrew Morton
2020-06-04 23:47 ` [patch 030/127] {x86,powerpc,microblaze}/kmap: move preempt disable Andrew Morton
2020-06-04 23:47 ` [patch 031/127] arch/kmap_atomic: consolidate duplicate code Andrew Morton
2020-06-04 23:47 ` [patch 032/127] arch/kunmap_atomic: " Andrew Morton
2020-06-04 23:47 ` [patch 033/127] arch/kmap: ensure kmap_prot visibility Andrew Morton
2020-06-04 23:47 ` [patch 034/127] arch/kmap: don't hard code kmap_prot values Andrew Morton
2020-06-04 23:47 ` [patch 035/127] arch/kmap: define kmap_atomic_prot() for all arch's Andrew Morton
2020-06-04 23:48 ` [patch 036/127] drm: remove drm specific kmap_atomic code Andrew Morton
2020-06-04 23:48 ` [patch 037/127] kmap: remove kmap_atomic_to_page() Andrew Morton
2020-06-04 23:48 ` [patch 038/127] parisc/kmap: remove duplicate kmap code Andrew Morton
2020-06-04 23:48 ` [patch 039/127] sparc: remove unnecessary includes Andrew Morton
2020-06-04 23:48 ` [patch 040/127] kmap: consolidate kmap_prot definitions Andrew Morton
2020-06-04 23:48 ` [patch 041/127] mm: add kvfree_sensitive() for freeing sensitive data objects Andrew Morton
2020-06-16 20:59 ` Jarkko Sakkinen
2020-06-04 23:48 ` [patch 042/127] mm/memory_hotplug: refrain from adding memory into an impossible node Andrew Morton
2020-06-04 23:48 ` [patch 043/127] powerpc/pseries/hotplug-memory: stop checking is_mem_section_removable() Andrew Morton
2020-06-04 23:48 ` [patch 044/127] mm/memory_hotplug: remove is_mem_section_removable() Andrew Morton
2020-06-04 23:48 ` [patch 045/127] mm/memory_hotplug: set node_start_pfn of hotadded pgdat to 0 Andrew Morton
2020-06-04 23:48 ` [patch 046/127] mm/memory_hotplug: handle memblocks only with CONFIG_ARCH_KEEP_MEMBLOCK Andrew Morton
2020-06-04 23:48 ` [patch 047/127] mm/memory_hotplug: introduce add_memory_driver_managed() Andrew Morton
2020-06-04 23:48 ` [patch 048/127] kexec_file: don't place kexec images on IORESOURCE_MEM_DRIVER_MANAGED Andrew Morton
2020-06-04 23:48 ` [patch 049/127] device-dax: add memory via add_memory_driver_managed() Andrew Morton
2020-06-04 23:48 ` [patch 050/127] mm/memory_hotplug: disable the functionality for 32b Andrew Morton
2020-06-04 23:48 ` [patch 051/127] mm: replace zero-length array with flexible-array member Andrew Morton
2020-06-04 23:48 ` [patch 052/127] mm/memory_hotplug: fix a typo in comment "recoreded"->"recorded" Andrew Morton
2020-06-04 23:49 ` [patch 053/127] mm: ksm: fix a typo in comment "alreaady"->"already" Andrew Morton
2020-06-04 23:49 ` [patch 054/127] mm: mmap: fix a typo in comment "compatbility"->"compatibility" Andrew Morton
2020-06-04 23:49 ` [patch 055/127] mm/hugetlb: fix a typos in comments Andrew Morton
2020-06-04 23:49 ` [patch 056/127] mm/vmsan: fix some typos in comment Andrew Morton
2020-06-04 23:49 ` [patch 057/127] mm/compaction: fix a typo in comment "pessemistic"->"pessimistic" Andrew Morton
2020-06-04 23:49 ` [patch 058/127] mm/memblock: fix a typo in comment "implict"->"implicit" Andrew Morton
2020-06-04 23:49 ` [patch 059/127] mm/list_lru: fix a typo in comment "numbesr"->"numbers" Andrew Morton
2020-06-04 23:49 ` [patch 060/127] mm/filemap: fix a typo in comment "unneccssary"->"unnecessary" Andrew Morton
2020-06-04 23:49 ` [patch 061/127] mm/frontswap: fix some typos in frontswap.c Andrew Morton
2020-06-04 23:49 ` [patch 062/127] mm, memcg: fix some typos in memcontrol.c Andrew Morton
2020-06-04 23:49 ` [patch 063/127] mm: fix a typo in comment "strucure"->"structure" Andrew Morton
2020-06-04 23:49 ` [patch 064/127] mm/slub: fix a typo in comment "disambiguiation"->"disambiguation" Andrew Morton
2020-06-04 23:49 ` [patch 065/127] mm/sparse: fix a typo in comment "convienence"->"convenience" Andrew Morton
2020-06-04 23:49 ` [patch 066/127] mm/page-writeback: fix a typo in comment "effictive"->"effective" Andrew Morton
2020-06-04 23:49 ` [patch 067/127] mm/memory: fix a typo in comment "attampt"->"attempt" Andrew Morton
2020-06-04 23:49 ` [patch 068/127] mm: use false for bool variable Andrew Morton
2020-06-04 23:49 ` [patch 069/127] include/linux/mm.h: return true in cpupid_pid_unset() Andrew Morton
2020-06-04 23:49 ` [patch 070/127] zcomp: Use ARRAY_SIZE() for backends list Andrew Morton
2020-06-04 23:49 ` [patch 071/127] proc: rename "catch" function argument Andrew Morton
2020-06-04 23:49 ` [patch 072/127] user.c: make uidhash_table static Andrew Morton
2020-06-04 23:50 ` [patch 073/127] get_maintainer: add email addresses from .yaml files Andrew Morton
2020-06-04 23:50 ` [patch 074/127] get_maintainer: fix unexpected behavior for path/to//file (double slashes) Andrew Morton
2020-06-04 23:50 ` [patch 075/127] lib/math: avoid trailing newline hidden in pr_fmt() Andrew Morton
2020-06-04 23:50 ` [patch 076/127] lib: Add might_fault() to strncpy_from_user Andrew Morton
2020-06-04 23:50 ` [patch 077/127] lib/test_lockup.c: make test_inode static Andrew Morton
2020-06-04 23:50 ` [patch 078/127] lib/zlib: remove outdated and incorrect pre-increment optimization Andrew Morton
2020-06-04 23:50 ` [patch 079/127] lib/percpu-refcount.c: use a more common logging style Andrew Morton
2020-06-04 23:50 ` [patch 080/127] lib/flex_proportions.c: cleanup __fprop_inc_percpu_max Andrew Morton
2020-06-04 23:50 ` [patch 081/127] lib: make a test module with set/clear bit Andrew Morton
2020-06-04 23:50 ` [patch 082/127] include/linux/bitops.h: avoid clang shift-count-overflow warnings Andrew Morton
2020-06-04 23:50 ` [patch 083/127] checkpatch: additional MAINTAINER section entry ordering checks Andrew Morton
2020-06-04 23:50 ` [patch 084/127] checkpatch: look for c99 comments in ctx_locate_comment Andrew Morton
2020-06-04 23:50 ` [patch 085/127] checkpatch: disallow --git and --file/--fix Andrew Morton
2020-06-04 23:50 ` [patch 086/127] checkpatch: use patch subject when reading from stdin Andrew Morton
2020-06-04 23:50 ` [patch 087/127] fs/binfmt_elf: remove redundant elf_map ifndef Andrew Morton
2020-06-04 23:50 ` [patch 088/127] elfnote: mark all .note sections SHF_ALLOC Andrew Morton
2020-06-04 23:50 ` [patch 089/127] init: allow distribution configuration of default init Andrew Morton
2020-06-04 23:50 ` [patch 090/127] fat: don't allow to mount if the FAT length == 0 Andrew Morton
2020-06-04 23:50 ` [patch 091/127] fat: improve the readahead for FAT entries Andrew Morton
2020-06-04 23:51 ` [patch 092/127] fs/seq_file.c: seq_read: Update pr_info_ratelimited Andrew Morton
2020-06-04 23:51 ` [patch 093/127] include/linux/seq_file.h: introduce DEFINE_SEQ_ATTRIBUTE() helper macro Andrew Morton
2020-06-04 23:51 ` [patch 094/127] mm/vmstat.c: convert to use DEFINE_SEQ_ATTRIBUTE macro Andrew Morton
2020-06-04 23:51 ` [patch 095/127] kernel/kprobes.c: " Andrew Morton
2020-06-04 23:51 ` [patch 096/127] exec: simplify the copy_strings_kernel calling convention Andrew Morton
2020-06-04 23:51 ` [patch 097/127] exec: open code copy_string_kernel Andrew Morton
2020-06-04 23:51 ` [patch 098/127] rapidio: avoid data race between file operation callbacks and mport_cdev_add() Andrew Morton
2020-06-04 23:51 ` [patch 099/127] rapidio: convert get_user_pages() --> pin_user_pages() Andrew Morton
2020-06-04 23:51 ` [patch 100/127] kernel/relay.c: handle alloc_percpu returning NULL in relay_open Andrew Morton
2020-06-04 23:51 ` [patch 101/127] kernel/relay.c: fix read_pos error when multiple readers Andrew Morton
2020-06-04 23:51 ` [patch 102/127] selftests/x86/pkeys: move selftests to arch-neutral directory Andrew Morton
2020-06-04 23:51 ` [patch 103/127] selftests/vm/pkeys: rename all references to pkru to a generic name Andrew Morton
2020-06-04 23:51 ` [patch 104/127] selftests/vm/pkeys: move generic definitions to header file Andrew Morton
2020-06-04 23:51 ` [patch 105/127] selftests/vm/pkeys: move some definitions to arch-specific header Andrew Morton
2020-06-04 23:51 ` [patch 106/127] selftests/vm/pkeys: make gcc check arguments of sigsafe_printf() Andrew Morton
2020-06-04 23:51 ` [patch 107/127] selftests: vm: pkeys: Use sane types for pkey register Andrew Morton
2020-06-04 23:51 ` [patch 108/127] selftests: vm: pkeys: add helpers for pkey bits Andrew Morton
2020-06-04 23:51 ` [patch 109/127] selftests/vm/pkeys: fix pkey_disable_clear() Andrew Morton
2020-06-04 23:52 ` [patch 110/127] selftests/vm/pkeys: fix assertion in pkey_disable_set/clear() Andrew Morton
2020-06-04 23:52 ` [patch 111/127] selftests/vm/pkeys: fix alloc_random_pkey() to make it really random Andrew Morton
2020-06-04 23:52 ` [patch 112/127] selftests: vm: pkeys: use the correct huge page size Andrew Morton
2020-06-04 23:52 ` [patch 113/127] selftests/vm/pkeys: introduce generic pkey abstractions Andrew Morton
2020-06-04 23:52 ` [patch 114/127] selftests/vm/pkeys: introduce powerpc support Andrew Morton
2020-06-04 23:52 ` [patch 115/127] selftests/vm/pkeys: fix number of reserved powerpc pkeys Andrew Morton
2020-06-04 23:52 ` [patch 116/127] selftests/vm/pkeys: fix assertion in test_pkey_alloc_exhaust() Andrew Morton
2020-06-04 23:52 ` [patch 117/127] selftests/vm/pkeys: improve checks to determine pkey support Andrew Morton
2020-06-04 23:52 ` [patch 118/127] selftests/vm/pkeys: associate key on a mapped page and detect access violation Andrew Morton
2020-06-04 23:52 ` [patch 119/127] selftests/vm/pkeys: associate key on a mapped page and detect write violation Andrew Morton
2020-06-04 23:52 ` [patch 120/127] selftests/vm/pkeys: detect write violation on a mapped access-denied-key page Andrew Morton
2020-06-04 23:52 ` [patch 121/127] selftests/vm/pkeys: introduce a sub-page allocator Andrew Morton
2020-06-04 23:52 ` [patch 122/127] selftests/vm/pkeys: test correct behaviour of pkey-0 Andrew Morton
2020-06-04 23:52 ` [patch 123/127] selftests/vm/pkeys: override access right definitions on powerpc Andrew Morton
2020-06-04 23:52 ` [patch 124/127] selftests: vm: pkeys: use the correct page size " Andrew Morton
2020-06-04 23:52 ` [patch 125/127] selftests: vm: pkeys: fix multilib builds for x86 Andrew Morton
2020-06-04 23:52 ` [patch 126/127] tools/testing/selftests/vm: remove duplicate headers Andrew Morton
2020-06-04 23:53 ` [patch 127/127] lib/ubsan.c: fix gcc-10 warnings Andrew Morton
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