diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2022-08-16 15:28:36 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-09-05 11:28:54 +0300 |
| commit | adee8f3082b01e5dab620d651e3ec75f57c0c855 (patch) | |
| tree | c790948799310739c90102c07550482986453b20 /lib | |
| parent | 895428ee124ad70b9763259308354877b725c31d (diff) | |
| download | linux-adee8f3082b01e5dab620d651e3ec75f57c0c855.tar.xz | |
x86/nospec: Unwreck the RSB stuffing
commit 4e3aa9238277597c6c7624f302d81a7b568b6f2d upstream.
Commit 2b1299322016 ("x86/speculation: Add RSB VM Exit protections")
made a right mess of the RSB stuffing, rewrite the whole thing to not
suck.
Thanks to Andrew for the enlightening comment about Post-Barrier RSB
things so we can make this code less magical.
Cc: stable@vger.kernel.org
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/YvuNdDWoUZSBjYcm@worktop.programming.kicks-ass.net
[bwh: Backported to 5.10: adjust context]
Signed-off-by: Ben Hutchings <benh@debian.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions