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Andy Lutomirski 9d8d0294e7 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: 04dcbdb805 ("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>
2019-05-16 09:05:12 +02:00
..
i386 Documentation: x86: convert i386/IO-APIC.txt to reST 2019-05-08 14:34:11 -06:00
x86_64 Some late arriving documentation changes. In particular, this contains the 2019-05-10 13:24:53 -04:00
amd-memory-encryption.rst Documentation: x86: convert amd-memory-encryption.txt to reST 2019-05-08 14:34:10 -06:00
boot.rst Documentation: x86: convert boot.txt to reST 2019-05-08 14:34:09 -06:00
conf.py x86/speculation/mds: Add mds_clear_cpu_buffers() 2019-03-06 21:52:12 +01:00
earlyprintk.rst Documentation: x86: convert earlyprintk.txt to reST 2019-05-08 14:34:10 -06:00
entry_64.rst Documentation: x86: convert entry_64.txt to reST 2019-05-08 14:34:09 -06:00
exception-tables.rst Documentation: x86: convert exception-tables.txt to reST 2019-05-08 14:34:09 -06:00
index.rst Merge branch 'x86-mds-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-05-14 07:57:29 -07:00
intel_mpx.rst Documentation: x86: convert intel_mpx.txt to reST 2019-05-08 14:34:10 -06:00
kernel-stacks.rst Some late arriving documentation changes. In particular, this contains the 2019-05-10 13:24:53 -04:00
mds.rst x86/speculation/mds: Improve CPU buffer clear documentation 2019-05-16 09:05:12 +02:00
microcode.rst Documentation: x86: convert microcode.txt to reST 2019-05-08 14:34:11 -06:00
mtrr.rst Documentation: x86: convert mtrr.txt to reST 2019-05-08 14:34:10 -06:00
orc-unwinder.rst Documentation: x86: convert orc-unwinder.txt to reST 2019-05-08 14:34:11 -06:00
pat.rst Documentation: x86: convert pat.txt to reST 2019-05-08 14:34:10 -06:00
protection-keys.rst Documentation: x86: convert protection-keys.txt to reST 2019-05-08 14:34:10 -06:00
pti.rst Documentation: x86: convert pti.txt to reST 2019-05-08 14:34:10 -06:00
resctrl_ui.rst Documentation: x86: convert resctrl_ui.txt to reST 2019-05-08 14:34:11 -06:00
tlb.rst Documentation: x86: convert tlb.txt to reST 2019-05-08 14:34:10 -06:00
topology.rst Some late arriving documentation changes. In particular, this contains the 2019-05-10 13:24:53 -04:00
usb-legacy-support.rst Documentation: x86: convert usb-legacy-support.txt to reST 2019-05-08 14:34:11 -06:00
zero-page.rst Documentation: x86: convert zero-page.txt to reST 2019-05-08 14:34:10 -06:00