diff options
| author | Bin Lu <bin.lu@arm.com> | 2020-09-10 02:47:10 -0400 |
|---|---|---|
| committer | Bin Lu <bin.lu@arm.com> | 2020-09-10 02:47:13 -0400 |
| commit | 6d688347791526e2a1101333ccc7a410735cf31a (patch) | |
| tree | e93a14b20c356a3044bf06eb6b66cfed4a1ecf2d /pkg/atomicbitops | |
| parent | 1ab097b08fc16d67b90f094a4316883c289ef77f (diff) | |
arm64:place an SB sequence following an ERET instruction
Some CPUs(eg: ampere-emag) can speculate past an ERET instruction and potentially perform
speculative accesses to memory before processing the exception return.
Since the register state is often controlled by a lower privilege level
at the point of an ERET, this could potentially be used as part of a
side-channel attack.
Signed-off-by: Bin Lu <bin.lu@arm.com>
Diffstat (limited to 'pkg/atomicbitops')
0 files changed, 0 insertions, 0 deletions