diff mbox series

[v4,15/21] KVM: arm64: Introduce addr_is_memory()

Message ID 20210809152448.1810400-16-qperret@google.com (mailing list archive)
State New, archived
Headers show
Series Track shared pages at EL2 in protected mode | expand

Commit Message

Quentin Perret Aug. 9, 2021, 3:24 p.m. UTC
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>
---
 arch/arm64/kvm/hyp/include/nvhe/mem_protect.h | 1 +
 arch/arm64/kvm/hyp/nvhe/mem_protect.c         | 7 +++++++
 2 files changed, 8 insertions(+)

Comments

Fuad Tabba Aug. 10, 2021, 4:37 a.m. UTC | #1
Hi Quentin,

On Mon, Aug 9, 2021 at 5:25 PM Quentin Perret <qperret@google.com> wrote:
>
> 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>

Thanks,
/fuad

>  arch/arm64/kvm/hyp/include/nvhe/mem_protect.h | 1 +
>  arch/arm64/kvm/hyp/nvhe/mem_protect.c         | 7 +++++++
>  2 files changed, 8 insertions(+)
>
> 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;
> --
> 2.32.0.605.g8dce9f2422-goog
>
diff mbox series

Patch

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;