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| author | Sean Christopherson <[email protected]> | 2025-04-01 16:34:40 +0000 |
|---|---|---|
| committer | Sean Christopherson <[email protected]> | 2025-04-24 18:19:37 +0000 |
| commit | 600e9606046ac3b9b7a3f0500d08a179df84c45e (patch) | |
| tree | 59fb06558b441845233273d6e0dfd22478c5da7a /rust/helpers/mutex.c | |
| parent | Merge branch 'kvm-fixes-6.15-rc4' into HEAD (diff) | |
| download | kernel-600e9606046ac3b9b7a3f0500d08a179df84c45e.tar.gz kernel-600e9606046ac3b9b7a3f0500d08a179df84c45e.zip | |
x86/irq: Ensure initial PIR loads are performed exactly once
Ensure the PIR is read exactly once at the start of handle_pending_pir(),
to guarantee that checking for an outstanding posted interrupt in a given
chuck doesn't reload the chunk from the "real" PIR. Functionally, a reload
is benign, but it would defeat the purpose of pre-loading into a copy.
Fixes: 1b03d82ba15e ("x86/irq: Install posted MSI notification handler")
Reviewed-by: Thomas Gleixner <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Sean Christopherson <[email protected]>
Diffstat (limited to 'rust/helpers/mutex.c')
0 files changed, 0 insertions, 0 deletions