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| author | Peter Zijlstra <[email protected]> | 2022-08-19 11:01:35 +0000 |
|---|---|---|
| committer | Peter Zijlstra <[email protected]> | 2022-08-19 11:24:33 +0000 |
| commit | 332924973725e8cdcc783c175f68cf7e162cb9e5 (patch) | |
| tree | b76aac38d4f92e8851fe474a237195aed5607373 /drivers/usb/cdns3/cdns3-ep0.c | |
| parent | x86/nospec: Unwreck the RSB stuffing (diff) | |
| download | kernel-332924973725e8cdcc783c175f68cf7e162cb9e5.tar.gz kernel-332924973725e8cdcc783c175f68cf7e162cb9e5.zip | |
x86/nospec: Fix i386 RSB stuffing
Turns out that i386 doesn't unconditionally have LFENCE, as such the
loop in __FILL_RETURN_BUFFER isn't actually speculation safe on such
chips.
Fixes: ba6e31af2be9 ("x86/speculation: Add LFENCE to RSB fill sequence")
Reported-by: Ben Hutchings <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]
Diffstat (limited to 'drivers/usb/cdns3/cdns3-ep0.c')
0 files changed, 0 insertions, 0 deletions