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arm/arm64: KVM: Allow handle_hva_to_gpa to return a value

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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>
This commit is contained in:
Marc Zyngier 2015-03-12 18:16:50 +00:00 committed by Christoffer Dall
parent 174178fed3
commit 1d2ebaccc7
1 changed files with 14 additions and 9 deletions
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23
arch/arm/kvm/mmu.c
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@ -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;
}