From: Alexandre Ghiti <alexghiti@rivosinc.com>
To: Ryan Roberts <ryan.roberts@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Alexander Potapenko <glider@google.com>,
Marco Elver <elver@google.com>,
Dmitry Vyukov <dvyukov@google.com>,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Ard Biesheuvel <ardb@kernel.org>,
Anup Patel <anup@brainfault.org>,
Atish Patra <atishp@atishpatra.org>,
Andrey Ryabinin <ryabinin.a.a@gmail.com>,
Andrey Konovalov <andreyknvl@gmail.com>,
Vincenzo Frascino <vincenzo.frascino@arm.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com,
linux-riscv@lists.infradead.org, linux-efi@vger.kernel.org,
kvm@vger.kernel.org, kvm-riscv@lists.infradead.org,
linux-mm@kvack.org
Cc: Alexandre Ghiti <alexghiti@rivosinc.com>
Subject: [PATCH 07/12] mm, riscv, arm64: Use common ptep_get_and_clear() function
Date: Wed, 8 May 2024 21:19:26 +0200 [thread overview]
Message-ID: <20240508191931.46060-8-alexghiti@rivosinc.com> (raw)
In-Reply-To: <20240508191931.46060-1-alexghiti@rivosinc.com>
Make riscv use the contpte aware ptep_get_and_clear() function from arm64.
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
---
arch/arm64/include/asm/pgtable.h | 8 ++------
arch/riscv/include/asm/pgtable.h | 7 +++++--
mm/contpte.c | 8 ++++++++
3 files changed, 15 insertions(+), 8 deletions(-)
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index 74e582f2884f..ff7fe1d9cabe 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -1473,12 +1473,8 @@ static inline pte_t get_and_clear_full_ptes(struct mm_struct *mm,
}
#define __HAVE_ARCH_PTEP_GET_AND_CLEAR
-static inline pte_t ptep_get_and_clear(struct mm_struct *mm,
- unsigned long addr, pte_t *ptep)
-{
- contpte_try_unfold(mm, addr, ptep, __ptep_get(ptep));
- return __ptep_get_and_clear(mm, addr, ptep);
-}
+extern pte_t ptep_get_and_clear(struct mm_struct *mm,
+ unsigned long addr, pte_t *ptep);
#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
static inline int ptep_test_and_clear_young(struct vm_area_struct *vma,
diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h
index 41534f4b8a6d..03cd640137ed 100644
--- a/arch/riscv/include/asm/pgtable.h
+++ b/arch/riscv/include/asm/pgtable.h
@@ -794,6 +794,9 @@ extern void set_pte(pte_t *ptep, pte_t pte);
#define set_pte set_pte
extern void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
#define pte_clear pte_clear
+#define __HAVE_ARCH_PTEP_GET_AND_CLEAR
+extern pte_t ptep_get_and_clear(struct mm_struct *mm,
+ unsigned long addr, pte_t *ptep);
#else /* CONFIG_THP_CONTPTE */
@@ -801,11 +804,11 @@ extern void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
#define set_ptes __set_ptes
#define set_pte __set_pte
#define pte_clear __pte_clear
+#define __HAVE_ARCH_PTEP_GET_AND_CLEAR
+#define ptep_get_and_clear __ptep_get_and_clear
#endif /* CONFIG_THP_CONTPTE */
-#define __HAVE_ARCH_PTEP_GET_AND_CLEAR
-#define ptep_get_and_clear __ptep_get_and_clear
#define __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
#define ptep_set_access_flags __ptep_set_access_flags
#define __HAVE_ARCH_PTEP_SET_WRPROTECT
diff --git a/mm/contpte.c b/mm/contpte.c
index c9eff6426ca0..5bf939639233 100644
--- a/mm/contpte.c
+++ b/mm/contpte.c
@@ -46,6 +46,7 @@
* - ptep_get_lockless()
* - set_pte()
* - pte_clear()
+ * - ptep_get_and_clear()
*/
pte_t huge_ptep_get(pte_t *ptep)
@@ -682,4 +683,11 @@ void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
contpte_try_unfold(mm, addr, ptep, __ptep_get(ptep));
__pte_clear(mm, addr, ptep);
}
+
+pte_t ptep_get_and_clear(struct mm_struct *mm,
+ unsigned long addr, pte_t *ptep)
+{
+ contpte_try_unfold(mm, addr, ptep, __ptep_get(ptep));
+ return __ptep_get_and_clear(mm, addr, ptep);
+}
#endif /* CONFIG_THP_CONTPTE */
--
2.39.2
next prev parent reply other threads:[~2024-05-08 19:26 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-08 19:19 [PATCH 00/12] Make riscv use THP contpte support for arm64 Alexandre Ghiti
2024-05-08 19:19 ` [PATCH 01/12] mm, arm64: Rename ARM64_CONTPTE to THP_CONTPTE Alexandre Ghiti
2024-05-09 0:46 ` Barry Song
2024-05-13 13:09 ` Alexandre Ghiti
2024-05-14 9:30 ` Barry Song
2024-05-08 19:19 ` [PATCH 02/12] mm, riscv, arm64: Use common ptep_get() function Alexandre Ghiti
2024-05-08 19:19 ` [PATCH 03/12] mm, riscv, arm64: Use common set_ptes() function Alexandre Ghiti
2024-05-08 19:19 ` [PATCH 04/12] mm, riscv, arm64: Use common ptep_get_lockless() function Alexandre Ghiti
2024-05-08 19:19 ` [PATCH 05/12] mm, riscv, arm64: Use common set_pte() function Alexandre Ghiti
2024-05-08 19:19 ` [PATCH 06/12] mm, riscv, arm64: Use common pte_clear() function Alexandre Ghiti
2024-05-08 19:19 ` Alexandre Ghiti [this message]
2024-05-08 19:19 ` [PATCH 08/12] mm, riscv, arm64: Use common ptep_test_and_clear_young() function Alexandre Ghiti
2024-05-08 19:19 ` [PATCH 09/12] mm, riscv, arm64: Use common ptep_clear_flush_young() function Alexandre Ghiti
2024-05-08 19:19 ` [PATCH 10/12] mm, riscv, arm64: Use common ptep_set_access_flags() function Alexandre Ghiti
2024-05-08 19:19 ` [PATCH 11/12] mm, riscv, arm64: Use common ptep_set_wrprotect()/wrprotect_ptes() functions Alexandre Ghiti
2024-05-08 19:19 ` [PATCH 12/12] mm, riscv, arm64: Use common get_and_clear_full_ptes()/clear_full_ptes() functions Alexandre Ghiti
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20240508191931.46060-8-alexghiti@rivosinc.com \
--to=alexghiti@rivosinc.com \
--cc=akpm@linux-foundation.org \
--cc=andreyknvl@gmail.com \
--cc=anup@brainfault.org \
--cc=aou@eecs.berkeley.edu \
--cc=ardb@kernel.org \
--cc=atishp@atishpatra.org \
--cc=catalin.marinas@arm.com \
--cc=dvyukov@google.com \
--cc=elver@google.com \
--cc=glider@google.com \
--cc=kasan-dev@googlegroups.com \
--cc=kvm-riscv@lists.infradead.org \
--cc=kvm@vger.kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-efi@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=linux-riscv@lists.infradead.org \
--cc=palmer@dabbelt.com \
--cc=paul.walmsley@sifive.com \
--cc=ryabinin.a.a@gmail.com \
--cc=ryan.roberts@arm.com \
--cc=vincenzo.frascino@arm.com \
--cc=will@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).