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| author | Andy Lutomirski <luto@kernel.org> | 2019-05-14 13:24:40 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2019-05-16 09:05:12 +0200 |
| commit | 9d8d0294e78a164d407133dea05caf4b84247d6a (patch) | |
| tree | 3c67d0f73e4df1ca917a06965cffab368194c0e3 /arch/arm | |
| parent | 88640e1dcd089879530a49a8d212d1814678dfe7 (diff) | |
| download | linux-stable-9d8d0294e78a164d407133dea05caf4b84247d6a.tar.gz linux-stable-9d8d0294e78a164d407133dea05caf4b84247d6a.tar.bz2 linux-stable-9d8d0294e78a164d407133dea05caf4b84247d6a.zip | |
x86/speculation/mds: Improve CPU buffer clear documentation
On x86_64, all returns to usermode go through
prepare_exit_to_usermode(), with the sole exception of do_nmi().
This even includes machine checks -- this was added several years
ago to support MCE recovery. Update the documentation.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Frederic Weisbecker <frederic@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jon Masters <jcm@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Fixes: 04dcbdb80578 ("x86/speculation/mds: Clear CPU buffers on exit to user")
Link: http://lkml.kernel.org/r/999fa9e126ba6a48e9d214d2f18dbde5c62ac55c.1557865329.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/arm')
0 files changed, 0 insertions, 0 deletions