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| author | Thomas Gleixner <tglx@linutronix.de> | 2018-01-18 16:28:26 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-01-19 16:31:28 +0100 |
| commit | 6f41c34d69eb005e7848716bbcafc979b35037d5 (patch) | |
| tree | b5f5f6275ac19cc185a127c2f8a913f46019d705 /arch/x86/lib | |
| parent | 6cfb521ac0d5b97470883ff9b7facae264b7ab12 (diff) | |
| download | linux-6f41c34d69eb005e7848716bbcafc979b35037d5.tar.gz linux-6f41c34d69eb005e7848716bbcafc979b35037d5.tar.bz2 linux-6f41c34d69eb005e7848716bbcafc979b35037d5.zip | |
x86/mce: Make machine check speculation protected
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>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/alpine.DEB.2.20.1801181626290.1847@nanos
Diffstat (limited to 'arch/x86/lib')
0 files changed, 0 insertions, 0 deletions