x86/mm: Do verify W^X at boot up
Straight up revert of commit:
a970174d7a
("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
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@ -587,10 +587,6 @@ static inline pgprot_t verify_rwx(pgprot_t old, pgprot_t new, unsigned long star
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{
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unsigned long end;
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/* Kernel text is rw at boot up */
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if (system_state == SYSTEM_BOOTING)
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return new;
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/*
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* 32-bit has some unfixable W+X issues, like EFI code
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* and writeable data being in the same page. Disable
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