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authorLinus Torvalds <torvalds@linux-foundation.org>2022-10-11 03:13:07 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2022-10-11 03:13:07 +0300
commit70442fc54e6889a2a77f0e9554e8188a1557f00e (patch)
tree24856824866827a50c3f37b98bf1cf25cd89ff47 /mm/nommu.c
parente2302539dd4f1c62d96651c07ddb05aa2461d29c (diff)
parentc5129ecc12a3101555d8922b1e0aa90f91247ab6 (diff)
downloadlinux-70442fc54e6889a2a77f0e9554e8188a1557f00e.tar.xz
Merge tag 'x86_mm_for_v6.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 mm updates from Dave Hansen: "There are some small things here, plus one big one. The big one detected and refused to create W+X kernel mappings. This caused a bit of trouble and it is entirely disabled on 32-bit due to known unfixable EFI issues. It also oopsed on some systemd eBPF use, which kept some users from booting. The eBPF issue is fixed, but those troubles were caught relatively recently which made me nervous that there are more lurking. The final commit in here retains the warnings, but doesn't actually refuse to create W+X mappings. Summary: - Detect insecure W+X mappings and warn about them, including a few bug fixes and relaxing the enforcement - Do a long-overdue defconfig update and enabling W+X boot-time detection - Cleanup _PAGE_PSE handling (follow-up on an earlier bug) - Rename a change_page_attr function" * tag 'x86_mm_for_v6.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mm: Ease W^X enforcement back to just a warning x86/mm: Disable W^X detection and enforcement on 32-bit x86/mm: Add prot_sethuge() helper to abstract out _PAGE_PSE handling x86/mm/32: Fix W^X detection when page tables do not support NX x86/defconfig: Enable CONFIG_DEBUG_WX=y x86/defconfig: Refresh the defconfigs x86/mm: Refuse W^X violations x86/mm: Rename set_memory_present() to set_memory_p()
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