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arm/arm64 KVM: allow specifying s2 prot bits when mapping i/o 

Add parameter allowing to specify s2 page table
protection and type bits and update the callers
accordingly.
The parameter will be used in a forthcoming patch.

Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
5.4-rM2-2.2.x-imx-squashed
Laurentiu Tudor 2016-07-26 16:12:30 +03:00 committed by Dong Aisheng
parent ebf350de6a
commit 00ee06c621
4 changed files with 11 additions and 6 deletions
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3
arch/arm/include/asm/kvm_mmu.h
View File

@ -55,7 +55,8 @@ void stage2_unmap_vm(struct kvm *kvm);
int kvm_alloc_stage2_pgd(struct kvm *kvm);
void kvm_free_stage2_pgd(struct kvm *kvm);
int kvm_phys_addr_ioremap(struct kvm *kvm, phys_addr_t guest_ipa,
phys_addr_t pa, unsigned long size, bool writable);
phys_addr_t pa, unsigned long size, bool writable,
pgprot_t prot);
int kvm_handle_guest_abort(struct kvm_vcpu *vcpu, struct kvm_run *run);

3
arch/arm64/include/asm/kvm_mmu.h
View File

@ -156,7 +156,8 @@ void stage2_unmap_vm(struct kvm *kvm);
int kvm_alloc_stage2_pgd(struct kvm *kvm);
void kvm_free_stage2_pgd(struct kvm *kvm);
int kvm_phys_addr_ioremap(struct kvm *kvm, phys_addr_t guest_ipa,
phys_addr_t pa, unsigned long size, bool writable);
phys_addr_t pa, unsigned long size, bool writable,
pgprot_t prot);
int kvm_handle_guest_abort(struct kvm_vcpu *vcpu, struct kvm_run *run);

8
virt/kvm/arm/mmu.c
View File

@ -1330,9 +1330,11 @@ static int stage2_pudp_test_and_clear_young(pud_t *pud)
* @guest_ipa: The IPA at which to insert the mapping
* @pa: The physical address of the device
* @size: The size of the mapping
* @prot: S2 page translation bits
*/
int kvm_phys_addr_ioremap(struct kvm *kvm, phys_addr_t guest_ipa,
phys_addr_t pa, unsigned long size, bool writable)
phys_addr_t pa, unsigned long size, bool writable,
pgprot_t prot)
{
phys_addr_t addr, end;
int ret = 0;
@ -1343,7 +1345,7 @@ int kvm_phys_addr_ioremap(struct kvm *kvm, phys_addr_t guest_ipa,
pfn = __phys_to_pfn(pa);
for (addr = guest_ipa; addr < end; addr += PAGE_SIZE) {
pte_t pte = kvm_pfn_pte(pfn, PAGE_S2_DEVICE);
pte_t pte = kvm_pfn_pte(pfn, prot);
if (writable)
pte = kvm_s2pte_mkwrite(pte);
@ -2332,7 +2334,7 @@ int kvm_arch_prepare_memory_region(struct kvm *kvm,
ret = kvm_phys_addr_ioremap(kvm, gpa, pa,
vm_end - vm_start,
writable);
writable, PAGE_S2_DEVICE);
if (ret)
break;
}

3
virt/kvm/arm/vgic/vgic-v2.c
View File

@ -341,7 +341,8 @@ int vgic_v2_map_resources(struct kvm *kvm)
if (!static_branch_unlikely(&vgic_v2_cpuif_trap)) {
ret = kvm_phys_addr_ioremap(kvm, dist->vgic_cpu_base,
kvm_vgic_global_state.vcpu_base,
KVM_VGIC_V2_CPU_SIZE, true);
KVM_VGIC_V2_CPU_SIZE, true,
PAGE_S2_DEVICE);
if (ret) {
kvm_err("Unable to remap VGIC CPU to VCPU\n");
goto out;