diff options
| author | Quentin Perret <qperret@google.com> | 2021-03-19 10:01:23 +0000 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2021-03-19 12:01:20 +0000 |
| commit | bc1d2892e9aa6dcf6cd83adbd3616051cbd4c429 (patch) | |
| tree | a14a48403337fa84c9d7991d9ff448cd72137559 /arch | |
| parent | d460df12926825a3926da91f054f9f11f88bb33e (diff) | |
KVM: arm64: Factor out vector address calculation
In order to re-map the guest vectors at EL2 when pKVM is enabled,
refactor __kvm_vector_slot2idx() and kvm_init_vector_slot() to move all
the address calculation logic in a static inline function.
Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210319100146.1149909-16-qperret@google.com
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/include/asm/kvm_mmu.h | 8 | ||||
| -rw-r--r-- | arch/arm64/kvm/arm.c | 9 |
2 files changed, 9 insertions, 8 deletions
diff --git a/arch/arm64/include/asm/kvm_mmu.h b/arch/arm64/include/asm/kvm_mmu.h index 90873851f677..5c42ec023cc7 100644 --- a/arch/arm64/include/asm/kvm_mmu.h +++ b/arch/arm64/include/asm/kvm_mmu.h @@ -168,6 +168,14 @@ phys_addr_t kvm_mmu_get_httbr(void); phys_addr_t kvm_get_idmap_vector(void); int kvm_mmu_init(void); +static inline void *__kvm_vector_slot2addr(void *base, + enum arm64_hyp_spectre_vector slot) +{ + int idx = slot - (slot != HYP_VECTOR_DIRECT); + + return base + (idx * SZ_2K); +} + struct kvm; #define kvm_flush_dcache_to_poc(a,l) __flush_dcache_area((a), (l)) diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index 22d6df525254..e2c471117bff 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -1350,16 +1350,9 @@ static unsigned long nvhe_percpu_order(void) /* A lookup table holding the hypervisor VA for each vector slot */ static void *hyp_spectre_vector_selector[BP_HARDEN_EL2_SLOTS]; -static int __kvm_vector_slot2idx(enum arm64_hyp_spectre_vector slot) -{ - return slot - (slot != HYP_VECTOR_DIRECT); -} - static void kvm_init_vector_slot(void *base, enum arm64_hyp_spectre_vector slot) { - int idx = __kvm_vector_slot2idx(slot); - - hyp_spectre_vector_selector[slot] = base + (idx * SZ_2K); + hyp_spectre_vector_selector[slot] = __kvm_vector_slot2addr(base, slot); } static int kvm_init_vector_slots(void) |