From: Rohan McLure <rmclure@linux.ibm.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: x86@kernel.org, linux-mm@kvack.org,
Rohan McLure <rmclure@linux.ibm.com>,
linux-riscv@lists.infradead.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v10 04/12] Revert "mm/page_table_check: remove unused parameter in [__]page_table_check_pud_clear"
Date: Wed, 13 Mar 2024 15:21:09 +1100 [thread overview]
Message-ID: <20240313042118.230397-5-rmclure@linux.ibm.com> (raw)
In-Reply-To: <20240313042118.230397-1-rmclure@linux.ibm.com>
This reverts commit 931c38e16499a057e30a3033f4d6a9c242f0f156.
Reinstate previously unused parameters for the purpose of supporting
powerpc platforms, as many do not encode user/kernel ownership of the
page in the pte, but instead in the address of the access.
Signed-off-by: Rohan McLure <rmclure@linux.ibm.com>
---
arch/x86/include/asm/pgtable.h | 2 +-
include/linux/page_table_check.h | 11 +++++++----
include/linux/pgtable.h | 2 +-
mm/page_table_check.c | 5 +++--
4 files changed, 12 insertions(+), 8 deletions(-)
diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index 6a7dc2524344..3e7003b01c9d 100644
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@ -1363,7 +1363,7 @@ static inline pud_t pudp_huge_get_and_clear(struct mm_struct *mm,
{
pud_t pud = native_pudp_get_and_clear(pudp);
- page_table_check_pud_clear(mm, pud);
+ page_table_check_pud_clear(mm, addr, pud);
return pud;
}
diff --git a/include/linux/page_table_check.h b/include/linux/page_table_check.h
index 9243c920ed02..d01a00ffc1f9 100644
--- a/include/linux/page_table_check.h
+++ b/include/linux/page_table_check.h
@@ -16,7 +16,8 @@ extern struct page_ext_operations page_table_check_ops;
void __page_table_check_zero(struct page *page, unsigned int order);
void __page_table_check_pte_clear(struct mm_struct *mm, pte_t pte);
void __page_table_check_pmd_clear(struct mm_struct *mm, pmd_t pmd);
-void __page_table_check_pud_clear(struct mm_struct *mm, pud_t pud);
+void __page_table_check_pud_clear(struct mm_struct *mm, unsigned long addr,
+ pud_t pud);
void __page_table_check_ptes_set(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pte, unsigned int nr);
void __page_table_check_pmd_set(struct mm_struct *mm, unsigned long addr,
@@ -59,12 +60,13 @@ static inline void page_table_check_pmd_clear(struct mm_struct *mm, pmd_t pmd)
__page_table_check_pmd_clear(mm, pmd);
}
-static inline void page_table_check_pud_clear(struct mm_struct *mm, pud_t pud)
+static inline void page_table_check_pud_clear(struct mm_struct *mm,
+ unsigned long addr, pud_t pud)
{
if (static_branch_likely(&page_table_check_disabled))
return;
- __page_table_check_pud_clear(mm, pud);
+ __page_table_check_pud_clear(mm, addr, pud);
}
static inline void page_table_check_ptes_set(struct mm_struct *mm,
@@ -125,7 +127,8 @@ static inline void page_table_check_pmd_clear(struct mm_struct *mm, pmd_t pmd)
{
}
-static inline void page_table_check_pud_clear(struct mm_struct *mm, pud_t pud)
+static inline void page_table_check_pud_clear(struct mm_struct *mm,
+ unsigned long addr, pud_t pud)
{
}
diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h
index 5da04d056bc3..77877ae8abef 100644
--- a/include/linux/pgtable.h
+++ b/include/linux/pgtable.h
@@ -544,7 +544,7 @@ static inline pud_t pudp_huge_get_and_clear(struct mm_struct *mm,
pud_t pud = *pudp;
pud_clear(pudp);
- page_table_check_pud_clear(mm, pud);
+ page_table_check_pud_clear(mm, address, pud);
return pud;
}
diff --git a/mm/page_table_check.c b/mm/page_table_check.c
index 3a338fee6d00..a8c8fd7f06f8 100644
--- a/mm/page_table_check.c
+++ b/mm/page_table_check.c
@@ -171,7 +171,8 @@ void __page_table_check_pmd_clear(struct mm_struct *mm, pmd_t pmd)
}
EXPORT_SYMBOL(__page_table_check_pmd_clear);
-void __page_table_check_pud_clear(struct mm_struct *mm, pud_t pud)
+void __page_table_check_pud_clear(struct mm_struct *mm, unsigned long addr,
+ pud_t pud)
{
if (&init_mm == mm)
return;
@@ -217,7 +218,7 @@ void __page_table_check_pud_set(struct mm_struct *mm, unsigned long addr,
if (&init_mm == mm)
return;
- __page_table_check_pud_clear(mm, *pudp);
+ __page_table_check_pud_clear(mm, addr, *pudp);
if (pud_user_accessible_page(pud)) {
page_table_check_set(pud_pfn(pud), PUD_SIZE >> PAGE_SHIFT,
pud_write(pud));
--
2.44.0
next prev parent reply other threads:[~2024-03-13 4:24 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-13 4:21 [PATCH v10 00/12] Support page table check PowerPC Rohan McLure
2024-03-13 4:21 ` [PATCH v10 01/12] Revert "mm/page_table_check: remove unused parameter in [__]page_table_check_pud_set" Rohan McLure
2024-03-13 4:21 ` [PATCH v10 02/12] Revert "mm/page_table_check: remove unused parameter in [__]page_table_check_pmd_set" Rohan McLure
2024-03-13 4:21 ` [PATCH v10 03/12] mm: Provide addr parameter to page_table_check_pte_set() Rohan McLure
2024-03-13 4:21 ` Rohan McLure [this message]
2024-03-13 4:21 ` [PATCH v10 05/12] Revert "mm/page_table_check: remove unused parameter in [__]page_table_check_pmd_clear" Rohan McLure
2024-03-13 4:21 ` [PATCH v10 06/12] Revert "mm/page_table_check: remove unused parameter in [__]page_table_check_pte_clear" Rohan McLure
2024-03-13 4:21 ` [PATCH v10 07/12] mm: Provide address parameter to p{te,md,ud}_user_accessible_page() Rohan McLure
2024-03-13 4:21 ` [PATCH v10 08/12] powerpc: mm: Replace p{u,m,4}d_is_leaf with p{u,m,4}_leaf Rohan McLure
2024-03-13 10:33 ` Christophe Leroy
2024-03-13 4:21 ` [PATCH v10 09/12] powerpc: mm: Add common pud_pfn stub for all platforms Rohan McLure
2024-03-13 11:08 ` Christophe Leroy
2024-03-14 0:18 ` LTC IMAP
2024-03-13 4:21 ` [PATCH v10 10/12] poweprc: mm: Implement *_user_accessible_page() for ptes Rohan McLure
2024-03-13 11:19 ` Christophe Leroy
2024-03-13 4:21 ` [PATCH v10 11/12] powerpc: mm: Use set_pte_at_unchecked() for early-boot / internal usages Rohan McLure
2024-03-13 11:30 ` Christophe Leroy
2024-03-15 0:45 ` LTC IMAP
2024-03-13 4:21 ` [PATCH v10 12/12] powerpc: mm: Support page table check Rohan McLure
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=20240313042118.230397-5-rmclure@linux.ibm.com \
--to=rmclure@linux.ibm.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-mm@kvack.org \
--cc=linux-riscv@lists.infradead.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=x86@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 NNTP newsgroup(s).