| 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 |
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 --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;
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(+)