diff options
| author | Suzuki K Poulose <suzuki.poulose@arm.com> | 2021-03-23 12:06:30 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-04-16 11:57:53 +0200 |
| commit | 67c9beda84973f5962efd27007a56e42b0d1d750 (patch) | |
| tree | e86c671efe05fbe7a09d3e4b6b26db8b0c0ab5c7 /drivers/gpu/drm/imx/imx-ldb.c | |
| parent | d21a8852e738ac5661c6015580cc0196161fcf37 (diff) | |
KVM: arm64: Disable guest access to trace filter controls
[ Upstream commit a354a64d91eec3e0f8ef0eed575b480fd75b999c ]
Disable guest access to the Trace Filter control registers.
We do not advertise the Trace filter feature to the guest
(ID_AA64DFR0_EL1: TRACE_FILT is cleared) already, but the guest
can still access the TRFCR_EL1 unless we trap it.
This will also make sure that the guest cannot fiddle with
the filtering controls set by a nvhe host.
Cc: Marc Zyngier <maz@kernel.org>
Cc: Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210323120647.454211-3-suzuki.poulose@arm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/imx/imx-ldb.c')
0 files changed, 0 insertions, 0 deletions