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| author | Diana Craciun <diana.craciun@nxp.com> | 2018-12-12 15:03:03 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-12-20 12:59:03 +0100 |
| commit | 98518c4d8728656db349f875fcbbc7c126d4c973 (patch) | |
| tree | a0291c2161d8120adc257b786e2097160de54441 /arch/powerpc/include/asm/setup.h | |
| parent | powerpc/fsl: Fix spectre_v2 mitigations reporting (diff) | |
| download | linux-98518c4d8728656db349f875fcbbc7c126d4c973.tar.xz linux-98518c4d8728656db349f875fcbbc7c126d4c973.zip | |
powerpc/fsl: Emulate SPRN_BUCSR register
In order to flush the branch predictor the guest kernel performs
writes to the BUCSR register which is hypervisor privilleged. However,
the branch predictor is flushed at each KVM entry, so the branch
predictor has been already flushed, so just return as soon as possible
to guest.
Signed-off-by: Diana Craciun <diana.craciun@nxp.com>
[mpe: Tweak comment formatting]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/setup.h')
0 files changed, 0 insertions, 0 deletions