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kvm-arm: Replace kvm_pmd_huge with pmd_thp_or_huge 

Both arm and arm64 now provides a helper, pmd_thp_or_huge()
to check if the given pmd represents a huge page. Use that
instead of our own custom check.

Suggested-by: Mark Rutland <mark.rutland@arm.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
This commit is contained in:
Suzuki K Poulose 2016-03-01 12:00:39 +00:00 committed by Christoffer Dall
parent 0dbd3b18c6
commit bbb3b6b350
1 changed files with 8 additions and 9 deletions
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17
arch/arm/kvm/mmu.c
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@ -45,7 +45,6 @@ static phys_addr_t hyp_idmap_vector;
#define hyp_pgd_order get_order(PTRS_PER_PGD * sizeof(pgd_t))
#define kvm_pmd_huge(_x) (pmd_huge(_x) || pmd_trans_huge(_x))
#define kvm_pud_huge(_x) pud_huge(_x)
#define KVM_S2PTE_FLAG_IS_IOMAP (1UL << 0)
@ -115,7 +114,7 @@ static bool kvm_is_device_pfn(unsigned long pfn)
*/
static void stage2_dissolve_pmd(struct kvm *kvm, phys_addr_t addr, pmd_t *pmd)
{
if (!kvm_pmd_huge(*pmd))
if (!pmd_thp_or_huge(*pmd))
return;
pmd_clear(pmd);
@ -177,7 +176,7 @@ static void clear_pud_entry(struct kvm *kvm, pud_t *pud, phys_addr_t addr)
static void clear_pmd_entry(struct kvm *kvm, pmd_t *pmd, phys_addr_t addr)
{
pte_t *pte_table = pte_offset_kernel(pmd, 0);
VM_BUG_ON(kvm_pmd_huge(*pmd));
VM_BUG_ON(pmd_thp_or_huge(*pmd));
pmd_clear(pmd);
kvm_tlb_flush_vmid_ipa(kvm, addr);
pte_free_kernel(NULL, pte_table);
@ -240,7 +239,7 @@ static void unmap_pmds(struct kvm *kvm, pud_t *pud,
do {
next = kvm_pmd_addr_end(addr, end);
if (!pmd_none(*pmd)) {
if (kvm_pmd_huge(*pmd)) {
if (pmd_thp_or_huge(*pmd)) {
pmd_t old_pmd = *pmd;
pmd_clear(pmd);
@ -326,7 +325,7 @@ static void stage2_flush_pmds(struct kvm *kvm, pud_t *pud,
do {
next = kvm_pmd_addr_end(addr, end);
if (!pmd_none(*pmd)) {
if (kvm_pmd_huge(*pmd))
if (pmd_thp_or_huge(*pmd))
kvm_flush_dcache_pmd(*pmd);
else
stage2_flush_ptes(kvm, pmd, addr, next);
@ -1050,7 +1049,7 @@ static void stage2_wp_pmds(pud_t *pud, phys_addr_t addr, phys_addr_t end)
do {
next = kvm_pmd_addr_end(addr, end);
if (!pmd_none(*pmd)) {
if (kvm_pmd_huge(*pmd)) {
if (pmd_thp_or_huge(*pmd)) {
if (!kvm_s2pmd_readonly(pmd))
kvm_set_s2pmd_readonly(pmd);
} else {
@ -1331,7 +1330,7 @@ static void handle_access_fault(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa)
if (!pmd || pmd_none(*pmd)) /* Nothing there */
goto out;
if (kvm_pmd_huge(*pmd)) { /* THP, HugeTLB */
if (pmd_thp_or_huge(*pmd)) { /* THP, HugeTLB */
*pmd = pmd_mkyoung(*pmd);
pfn = pmd_pfn(*pmd);
pfn_valid = true;
@ -1555,7 +1554,7 @@ static int kvm_age_hva_handler(struct kvm *kvm, gpa_t gpa, void *data)
if (!pmd || pmd_none(*pmd)) /* Nothing there */
return 0;
if (kvm_pmd_huge(*pmd)) { /* THP, HugeTLB */
if (pmd_thp_or_huge(*pmd)) { /* THP, HugeTLB */
if (pmd_young(*pmd)) {
*pmd = pmd_mkold(*pmd);
return 1;
@ -1585,7 +1584,7 @@ static int kvm_test_age_hva_handler(struct kvm *kvm, gpa_t gpa, void *data)
if (!pmd || pmd_none(*pmd)) /* Nothing there */
return 0;
if (kvm_pmd_huge(*pmd)) /* THP, HugeTLB */
if (pmd_thp_or_huge(*pmd)) /* THP, HugeTLB */
return pmd_young(*pmd);
pte = pte_offset_kernel(pmd, gpa);