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authorDave Martin <Dave.Martin@arm.com>2016-04-18 18:57:26 +0100
committerCatalin Marinas <catalin.marinas@arm.com>2016-04-21 18:34:23 +0100
commit882416c1e4d1c9d4c7b50e0f5c3fa9ef043cd710 (patch)
treeeafa9c29e8e048e29a1a0240c023452088e5a738 /drivers
parentcbcc72e037b8a3eb1fad3c1ae22021df21c97a51 (diff)
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>
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