From c0bc03b0250473eb9c71eb5cb0bb6fb775de6e3d Mon Sep 17 00:00:00 2001 From: Quentin Perret Date: Tue, 22 Mar 2022 14:31:37 +0000 Subject: [PATCH] ANDROID: KVM: arm64: Add is_pkvm_initialized() helper Add a helper allowing to check when the pkvm static key is enabled to ease the introduction of pkvm hooks in other parts of the code. Signed-off-by: Quentin Perret Signed-off-by: Will Deacon Bug: 233587962 Change-Id: I8995021768def73bd7636a84059bdc43fa7ab2fc --- arch/arm64/include/asm/virt.h | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/arch/arm64/include/asm/virt.h b/arch/arm64/include/asm/virt.h index 3218ca17f819..8bc48dec6952 100644 --- a/arch/arm64/include/asm/virt.h +++ b/arch/arm64/include/asm/virt.h @@ -72,6 +72,12 @@ void __hyp_reset_vectors(void); DECLARE_STATIC_KEY_FALSE(kvm_protected_mode_initialized); +static inline bool is_pkvm_initialized(void) +{ + return IS_ENABLED(CONFIG_KVM) && + static_branch_likely(&kvm_protected_mode_initialized); +} + /* Reports the availability of HYP mode */ static inline bool is_hyp_mode_available(void) { @@ -79,8 +85,7 @@ static inline bool is_hyp_mode_available(void) * If KVM protected mode is initialized, all CPUs must have been booted * in EL2. Avoid checking __boot_cpu_mode as CPUs now come up in EL1. */ - if (IS_ENABLED(CONFIG_KVM) && - static_branch_likely(&kvm_protected_mode_initialized)) + if (is_pkvm_initialized()) return true; return (__boot_cpu_mode[0] == BOOT_CPU_MODE_EL2 && @@ -94,8 +99,7 @@ static inline bool is_hyp_mode_mismatched(void) * If KVM protected mode is initialized, all CPUs must have been booted * in EL2. Avoid checking __boot_cpu_mode as CPUs now come up in EL1. */ - if (IS_ENABLED(CONFIG_KVM) && - static_branch_likely(&kvm_protected_mode_initialized)) + if (is_pkvm_initialized()) return false; return __boot_cpu_mode[0] != __boot_cpu_mode[1];