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authorMarc Zyngier <marc.zyngier@arm.com>2015-03-12 18:16:50 +0000
committerChristoffer Dall <christoffer.dall@linaro.org>2015-03-12 22:34:30 +0100
commit1d2ebaccc741a299abfafb848414b01d190f4e33 (patch)
tree77bc47868944f30e42ef86bc18474a5799fa05d6 /arch/arm/kvm/mmu.c
parent174178fed338edba66ab9580af0c5d9e1a4e5019 (diff)
arm/arm64: KVM: Allow handle_hva_to_gpa to return a value
So far, handle_hva_to_gpa was never required to return a value. As we prepare to age pages at Stage-2, we need to be able to return a value from the iterator (kvm_test_age_hva). Adapt the code to handle this situation. No semantic change. Acked-by: Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'arch/arm/kvm/mmu.c')
-rw-r--r--arch/arm/kvm/mmu.c23
1 files changed, 14 insertions, 9 deletions
diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c
index 3e6859bc3e11..ffa06e07eed2 100644
--- a/arch/arm/kvm/mmu.c
+++ b/arch/arm/kvm/mmu.c
@@ -1377,15 +1377,16 @@ out_unlock:
return ret;
}
-static void handle_hva_to_gpa(struct kvm *kvm,
- unsigned long start,
- unsigned long end,
- void (*handler)(struct kvm *kvm,
- gpa_t gpa, void *data),
- void *data)
+static int handle_hva_to_gpa(struct kvm *kvm,
+ unsigned long start,
+ unsigned long end,
+ int (*handler)(struct kvm *kvm,
+ gpa_t gpa, void *data),
+ void *data)
{
struct kvm_memslots *slots;
struct kvm_memory_slot *memslot;
+ int ret = 0;
slots = kvm_memslots(kvm);
@@ -1409,14 +1410,17 @@ static void handle_hva_to_gpa(struct kvm *kvm,
for (; gfn < gfn_end; ++gfn) {
gpa_t gpa = gfn << PAGE_SHIFT;
- handler(kvm, gpa, data);
+ ret |= handler(kvm, gpa, data);
}
}
+
+ return ret;
}
-static void kvm_unmap_hva_handler(struct kvm *kvm, gpa_t gpa, void *data)
+static int kvm_unmap_hva_handler(struct kvm *kvm, gpa_t gpa, void *data)
{
unmap_stage2_range(kvm, gpa, PAGE_SIZE);
+ return 0;
}
int kvm_unmap_hva(struct kvm *kvm, unsigned long hva)
@@ -1442,7 +1446,7 @@ int kvm_unmap_hva_range(struct kvm *kvm,
return 0;
}
-static void kvm_set_spte_handler(struct kvm *kvm, gpa_t gpa, void *data)
+static int kvm_set_spte_handler(struct kvm *kvm, gpa_t gpa, void *data)
{
pte_t *pte = (pte_t *)data;
@@ -1454,6 +1458,7 @@ static void kvm_set_spte_handler(struct kvm *kvm, gpa_t gpa, void *data)
* through this calling path.
*/
stage2_set_pte(kvm, NULL, gpa, pte, 0);
+ return 0;
}