Re: [PATCH v6 03/13] arm64/kvm: consistently handle host HCR_EL2 flags

On 12/7/18 12:39 PM, Kristina Martsenko wrote:

From: Mark Rutland <mark.rutland@arm.com>

In KVM we define the configuration of HCR_EL2 for a VHE HOST in
HCR_HOST_VHE_FLAGS, but we don't have a similar definition for the
non-VHE host flags, and open-code HCR_RW. Further, in head.S we
open-code the flags for VHE and non-VHE configurations.

In future, we're going to want to configure more flags for the host, so
lets add a HCR_HOST_NVHE_FLAGS defintion, and consistently use both
HCR_HOST_VHE_FLAGS and HCR_HOST_NVHE_FLAGS in the kvm code and head.S.

We now use mov_q to generate the HCR_EL2 value, as we use when
configuring other registers in head.S.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Kristina Martsenko <redacted>
Reviewed-by: Christoffer Dall <redacted>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Marc Zyngier <redacted>
Cc: Will Deacon <redacted>
Cc: kvmarm@lists.cs.columbia.edu
---
 arch/arm64/include/asm/kvm_arm.h | 1 +
 arch/arm64/kernel/head.S         | 5 ++---
 arch/arm64/kvm/hyp/switch.c      | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~


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