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ANDROID: KVM: arm64: Add is_pkvm_initialized() helper

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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 <qperret@google.com>
Signed-off-by: Will Deacon <willdeacon@google.com>
Bug: 233587962
Change-Id: I8995021768def73bd7636a84059bdc43fa7ab2fc
Signed-off-by: Quentin Perret <qperret@google.com>
This commit is contained in:
Quentin Perret
2022-03-22 14:31:37 +00:00
parent 26f8573abf
commit 2c8c86040f
1 changed files with 8 additions and 4 deletions
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12
arch/arm64/include/asm/virt.h
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@@ -81,6 +81,12 @@ 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)
{
@@ -88,8 +94,7 @@ 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 &&
@@ -103,8 +108,7 @@ 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];