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| author | Dave Martin <Dave.Martin@arm.com> | 2016-04-18 19:57:26 +0200 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2016-04-21 19:34:23 +0200 |
| commit | 882416c1e4d1c9d4c7b50e0f5c3fa9ef043cd710 (patch) | |
| tree | eafa9c29e8e048e29a1a0240c023452088e5a738 /arch/um | |
| parent | drivers/perf: arm-pmu: fix RCU usage on pmu resume from low-power (diff) | |
| download | linux-882416c1e4d1c9d4c7b50e0f5c3fa9ef043cd710.tar.xz linux-882416c1e4d1c9d4c7b50e0f5c3fa9ef043cd710.zip | |
arm64: Fix EL1/EL2 early init inconsistencies with VHE
When using the Virtualisation Host Extensions, EL1 is not used in
the host and requires no separate configuration.
In addition, with VHE enabled, non-hyp-specific EL2 configuration
that does not need to be done early will be done anyway in
__cpu_setup via the _EL1 system register aliases. In particular,
the layout and definition of CPTR_EL2 are changed by enabling VHE
so that they resemble CPACR_EL1, so existing code to initialise
CPTR_EL2 becomes architecturally wrong in this case.
This patch simply skips the affected initialisation code in the
non-VHE case.
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/um')
0 files changed, 0 insertions, 0 deletions