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ESR_EL2 was defined as a 32-bit register in the initial release of the ARM Architecture Manual for Armv8-A, and was later extended to 64 bits, with bits [63:32] RES0. ARMv8.7 introduced FEAT_LS64, which makes use of bits [36:32]. KVM treats ESR_EL1 as a 64-bit register when saving and restoring the guest context, but ESR_EL2 is handled as a 32-bit register. Start treating ESR_EL2 as a 64-bit register to allow KVM to make use of the most significant 32 bits in the future. The type chosen to represent ESR_EL2 is u64, as that is consistent with the notation KVM overwhelmingly uses today (u32), and how the rest of the registers are declared. Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com> Reviewed-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20220425114444.368693-5-alexandru.elisei@arm.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> |
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boot | ||
configs | ||
crypto | ||
hyperv | ||
include | ||
kernel | ||
kvm | ||
lib | ||
mm | ||
net | ||
tools | ||
xen | ||
Kbuild | ||
Kconfig | ||
Kconfig.debug | ||
Kconfig.platforms | ||
Makefile |