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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-06-20 19:09:58 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-06-20 19:09:58 +0300 |
| commit | 8363e795eb79a74c857ba89e3b04668a33fe3344 (patch) | |
| tree | edfdbfa3be22e945ce84260d2a48b7fb6cdac210 /arch/x86/mm/numa.c | |
| parent | b84a7c286cecf0604a5f8bd5dfcd5e1ca7233e15 (diff) | |
| parent | 28e5e44aa3f4e0e0370864ed008fb5e2d85f4dc8 (diff) | |
| download | linux-8363e795eb79a74c857ba89e3b04668a33fe3344.tar.xz | |
Merge tag 'x86_urgent_for_v5.13_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
"A first set of urgent fixes to the FPU/XSTATE handling mess^W code.
(There's a lot more in the pipe):
- Prevent corruption of the XSTATE buffer in signal handling by
validating what is being copied from userspace first.
- Invalidate other task's preserved FPU registers on XRSTOR failure
(#PF) because latter can still modify some of them.
- Restore the proper PKRU value in case userspace modified it
- Reset FPU state when signal restoring fails
Other:
- Map EFI boot services data memory as encrypted in a SEV guest so
that the guest can access it and actually boot properly
- Two SGX correctness fixes: proper resources freeing and a NUMA fix"
* tag 'x86_urgent_for_v5.13_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm: Avoid truncating memblocks for SGX memory
x86/sgx: Add missing xa_destroy() when virtual EPC is destroyed
x86/fpu: Reset state for all signal restore failures
x86/pkru: Write hardware init value to PKRU when xstate is init
x86/process: Check PF_KTHREAD and not current->mm for kernel threads
x86/fpu: Invalidate FPU state after a failed XRSTOR from a user buffer
x86/fpu: Prevent state corruption in __fpu__restore_sig()
x86/ioremap: Map EFI-reserved memory as encrypted for SEV
Diffstat (limited to 'arch/x86/mm/numa.c')
| -rw-r--r-- | arch/x86/mm/numa.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c index 5eb4dc2b97da..e94da744386f 100644 --- a/arch/x86/mm/numa.c +++ b/arch/x86/mm/numa.c @@ -254,7 +254,13 @@ int __init numa_cleanup_meminfo(struct numa_meminfo *mi) /* make sure all non-reserved blocks are inside the limits */ bi->start = max(bi->start, low); - bi->end = min(bi->end, high); + + /* preserve info for non-RAM areas above 'max_pfn': */ + if (bi->end > high) { + numa_add_memblk_to(bi->nid, high, bi->end, + &numa_reserved_meminfo); + bi->end = high; + } /* and there's no empty block */ if (bi->start >= bi->end) |