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authorPeter Zijlstra <peterz@infradead.org>2022-10-25 21:39:43 +0200
committerDave Hansen <dave.hansen@linux.intel.com>2022-12-15 19:37:26 +0100
commit414ebf148cb5c5fa727ec51fdb69c4ab82dccf3b (patch)
treec0c41d604c46ba3cbea06c35177e812bb2d7cadb
parentx86/ftrace: Remove SYSTEM_BOOTING exceptions (diff)
downloadlinux-414ebf148cb5c5fa727ec51fdb69c4ab82dccf3b.tar.xz
linux-414ebf148cb5c5fa727ec51fdb69c4ab82dccf3b.zip
x86/mm: Do verify W^X at boot up
Straight up revert of commit: a970174d7a10 ("x86/mm: Do not verify W^X at boot up") now that the root cause has been fixed. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20221025201058.011279208@infradead.org
-rw-r--r--arch/x86/mm/pat/set_memory.c4
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/x86/mm/pat/set_memory.c b/arch/x86/mm/pat/set_memory.c
index 2e5a045731de..97342c42dda8 100644
--- a/arch/x86/mm/pat/set_memory.c
+++ b/arch/x86/mm/pat/set_memory.c
@@ -587,10 +587,6 @@ static inline pgprot_t verify_rwx(pgprot_t old, pgprot_t new, unsigned long star
{
unsigned long end;
- /* Kernel text is rw at boot up */
- if (system_state == SYSTEM_BOOTING)
- return new;
-
/*
* 32-bit has some unfixable W+X issues, like EFI code
* and writeable data being in the same page. Disable