linux-kernel - [PATCH v3 04/10] mm/x86: Replace pgd_large() with pgd

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20240305043750.93762-5-peterx@redhat.com>
Date: Tue,  5 Mar 2024 12:37:44 +0800
From: peterx@...hat.com
To: linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Cc: Christophe Leroy <christophe.leroy@...roup.eu>,
	x86@...nel.org,
	"Kirill A . Shutemov" <kirill@...temov.name>,
	Jason Gunthorpe <jgg@...dia.com>,
	Yang Shi <shy828301@...il.com>,
	peterx@...hat.com,
	Andrew Morton <akpm@...ux-foundation.org>,
	linuxppc-dev@...ts.ozlabs.org,
	Muchun Song <muchun.song@...ux.dev>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>
Subject: [PATCH v3 04/10] mm/x86: Replace pgd_large() with pgd_leaf()

From: Peter Xu <peterx@...hat.com>

pgd_leaf() is a global API while pgd_large() is not.  Always use
the global pgd_leaf(), then drop pgd_large().

Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Borislav Petkov <bp@...en8.de>
Cc: Dave Hansen <dave.hansen@...ux.intel.com>
Cc: x86@...nel.org
Signed-off-by: Peter Xu <peterx@...hat.com>
---
 arch/x86/include/asm/pgtable.h | 4 ++--
 arch/x86/mm/pti.c              | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index 69ed0ea0641b..d6e993a5659f 100644
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@ -1418,8 +1418,8 @@ static inline bool pgdp_maps_userspace(void *__ptr)
 	return (((ptr & ~PAGE_MASK) / sizeof(pgd_t)) < PGD_KERNEL_START);
 }
 
-#define pgd_leaf	pgd_large
-static inline int pgd_large(pgd_t pgd) { return 0; }
+#define pgd_leaf	pgd_leaf
+static inline int pgd_leaf(pgd_t pgd) { return 0; }
 
 #ifdef CONFIG_PAGE_TABLE_ISOLATION
 /*
diff --git a/arch/x86/mm/pti.c b/arch/x86/mm/pti.c
index dc0a81f5f60e..c17aab24c1b3 100644
--- a/arch/x86/mm/pti.c
+++ b/arch/x86/mm/pti.c
@@ -185,7 +185,7 @@ static p4d_t *pti_user_pagetable_walk_p4d(unsigned long address)
 
 		set_pgd(pgd, __pgd(_KERNPG_TABLE | __pa(new_p4d_page)));
 	}
-	BUILD_BUG_ON(pgd_large(*pgd) != 0);
+	BUILD_BUG_ON(pgd_leaf(*pgd) != 0);
 
 	return p4d_offset(pgd, address);
 }
-- 
2.44.0