[PATCH 2/4] arm64: KVM: Avoid marking pages as XN in Stage-2 if CTR_EL0.DIC is set
From: catalin.marinas@arm.com (Catalin Marinas)
Date: 2018-05-24 15:52:39
Also in:
kvm, kvmarm
On Thu, May 17, 2018 at 11:35:46AM +0100, Marc Zyngier wrote:
On systems where CTR_EL0.DIC is set, we don't need to perform icache invalidation to guarantee that we'll fetch the right instruction stream. This also means that taking a permission fault to invalidate the icache is an unnecessary overhead. On such systems, we can safely leave the page as being executable. Signed-off-by: Marc Zyngier <redacted>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>