diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2018-01-18 16:28:26 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-01-23 19:50:17 +0100 |
| commit | f59e7ce17ba327245c8feb312d447b09d3b98eba (patch) | |
| tree | d573460d635113776d4ac2cb5714ad54c2743c46 /Documentation/filesystems/caching/backend-api.txt | |
| parent | ff535919c1366b0218113f95c447d92c3aac0c1f (diff) | |
x86/mce: Make machine check speculation protected
commit 6f41c34d69eb005e7848716bbcafc979b35037d5 upstream.
The machine check idtentry uses an indirect branch directly from the low
level code. This evades the speculation protection.
Replace it by a direct call into C code and issue the indirect call there
so the compiler can apply the proper speculation protection.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by:Borislav Petkov <bp@alien8.de>
Reviewed-by: David Woodhouse <dwmw@amazon.co.uk>
Niced-by: Peter Zijlstra <peterz@infradead.org>
Link: https://lkml.kernel.org/r/alpine.DEB.2.20.1801181626290.1847@nanos
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/filesystems/caching/backend-api.txt')
0 files changed, 0 insertions, 0 deletions