From 13e248aab73d2f1c27b458ef09d38b44f3e5bf2e Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Thu, 10 Nov 2022 19:02:49 +0000 Subject: KVM: arm64: Provide I-cache invalidation by virtual address at EL2 In preparation for handling cache maintenance of guest pages from within the pKVM hypervisor at EL2, introduce an EL2 copy of icache_inval_pou() which will later be plumbed into the stage-2 page-table cache maintenance callbacks, ensuring that the initial contents of pages mapped as executable into the guest stage-2 page-table is visible to the instruction fetcher. Tested-by: Vincent Donnefort Signed-off-by: Will Deacon Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20221110190259.26861-17-will@kernel.org --- arch/arm64/include/asm/kvm_hyp.h | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/arm64/include/asm/kvm_hyp.h') diff --git a/arch/arm64/include/asm/kvm_hyp.h b/arch/arm64/include/asm/kvm_hyp.h index aa7fa2a08f06..fd99cf09972d 100644 --- a/arch/arm64/include/asm/kvm_hyp.h +++ b/arch/arm64/include/asm/kvm_hyp.h @@ -123,4 +123,5 @@ extern u64 kvm_nvhe_sym(id_aa64mmfr0_el1_sys_val); extern u64 kvm_nvhe_sym(id_aa64mmfr1_el1_sys_val); extern u64 kvm_nvhe_sym(id_aa64mmfr2_el1_sys_val); +extern unsigned long kvm_nvhe_sym(__icache_flags); #endif /* __ARM64_KVM_HYP_H__ */ -- cgit v1.2.3