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| author | Andy Lutomirski <luto@kernel.org> | 2019-05-14 13:24:40 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-05-21 18:48:56 +0200 |
| commit | 2f27bfffb469bd42c8ec07659d846e7e36a0f54c (patch) | |
| tree | ba3b8a27d34ce6855717fe6fe2e441783c606dbf /Documentation/zh_CN | |
| parent | f7154aa582a6a26fab8ba8b54054c610cfee10f3 (diff) | |
x86/speculation/mds: Improve CPU buffer clear documentation
commit 9d8d0294e78a164d407133dea05caf4b84247d6a upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/zh_CN')
0 files changed, 0 insertions, 0 deletions