diff options
| author | Andy Lutomirski <[email protected]> | 2019-05-14 20:24:40 +0000 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2019-05-16 07:05:12 +0000 |
| commit | 9d8d0294e78a164d407133dea05caf4b84247d6a (patch) | |
| tree | 3c67d0f73e4df1ca917a06965cffab368194c0e3 /drivers/fpga/fpga-bridge.c | |
| parent | x86/speculation/mds: Revert CPU buffer clear on double fault exit (diff) | |
| download | kernel-9d8d0294e78a164d407133dea05caf4b84247d6a.tar.gz kernel-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 <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Jon Masters <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: [email protected]
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 <[email protected]>
Diffstat (limited to 'drivers/fpga/fpga-bridge.c')
0 files changed, 0 insertions, 0 deletions