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| author | Quentin Perret <qperret@google.com> | 2021-08-09 17:24:42 +0200 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2021-08-11 12:39:51 +0200 |
| commit | e009dce1292c37cf8ee7c33e0887ad3c642f980f (patch) | |
| tree | c799a1243da2a03e1160c6d3c37038efc096fba9 /arch | |
| parent | KVM: arm64: Expose pkvm_hyp_id (diff) | |
| download | linux-e009dce1292c37cf8ee7c33e0887ad3c642f980f.tar.xz linux-e009dce1292c37cf8ee7c33e0887ad3c642f980f.zip | |
KVM: arm64: Introduce addr_is_memory()
Introduce a helper usable in nVHE protected mode to check whether a
physical address is in a RAM region or not.
Signed-off-by: Quentin Perret <qperret@google.com>
Reviewed-by: Fuad Tabba <tabba@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210809152448.1810400-16-qperret@google.com
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/kvm/hyp/include/nvhe/mem_protect.h | 1 | ||||
| -rw-r--r-- | arch/arm64/kvm/hyp/nvhe/mem_protect.c | 7 |
2 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm64/kvm/hyp/include/nvhe/mem_protect.h b/arch/arm64/kvm/hyp/include/nvhe/mem_protect.h index 23316a021880..49db0ec5a606 100644 --- a/arch/arm64/kvm/hyp/include/nvhe/mem_protect.h +++ b/arch/arm64/kvm/hyp/include/nvhe/mem_protect.h @@ -51,6 +51,7 @@ extern const u8 pkvm_hyp_id; int __pkvm_prot_finalize(void); int __pkvm_mark_hyp(phys_addr_t start, phys_addr_t end); +bool addr_is_memory(phys_addr_t phys); int host_stage2_idmap_locked(phys_addr_t addr, u64 size, enum kvm_pgtable_prot prot); int host_stage2_set_owner_locked(phys_addr_t addr, u64 size, u8 owner_id); int kvm_host_prepare_stage2(void *pgt_pool_base); diff --git a/arch/arm64/kvm/hyp/nvhe/mem_protect.c b/arch/arm64/kvm/hyp/nvhe/mem_protect.c index ee255171945c..cb023d31666e 100644 --- a/arch/arm64/kvm/hyp/nvhe/mem_protect.c +++ b/arch/arm64/kvm/hyp/nvhe/mem_protect.c @@ -197,6 +197,13 @@ static bool find_mem_range(phys_addr_t addr, struct kvm_mem_range *range) return false; } +bool addr_is_memory(phys_addr_t phys) +{ + struct kvm_mem_range range; + + return find_mem_range(phys, &range); +} + static bool range_is_memory(u64 start, u64 end) { struct kvm_mem_range r1, r2; |