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Diffstat (limited to 'arch/arm/kvm/mmu.c')
-rw-r--r--arch/arm/kvm/mmu.c24
1 files changed, 13 insertions, 11 deletions
diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c
index 580906989db1..7789857d1470 100644
--- a/arch/arm/kvm/mmu.c
+++ b/arch/arm/kvm/mmu.c
@@ -667,14 +667,16 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
667 gfn = (fault_ipa & PMD_MASK) >> PAGE_SHIFT; 667 gfn = (fault_ipa & PMD_MASK) >> PAGE_SHIFT;
668 } else { 668 } else {
669 /* 669 /*
670 * Pages belonging to VMAs not aligned to the PMD mapping 670 * Pages belonging to memslots that don't have the same
671 * granularity cannot be mapped using block descriptors even 671 * alignment for userspace and IPA cannot be mapped using
672 * if the pages belong to a THP for the process, because the 672 * block descriptors even if the pages belong to a THP for
673 * stage-2 block descriptor will cover more than a single THP 673 * the process, because the stage-2 block descriptor will
674 * and we loose atomicity for unmapping, updates, and splits 674 * cover more than a single THP and we loose atomicity for
675 * of the THP or other pages in the stage-2 block range. 675 * unmapping, updates, and splits of the THP or other pages
676 * in the stage-2 block range.
676 */ 677 */
677 if (vma->vm_start & ~PMD_MASK) 678 if ((memslot->userspace_addr & ~PMD_MASK) !=
679 ((memslot->base_gfn << PAGE_SHIFT) & ~PMD_MASK))
678 force_pte = true; 680 force_pte = true;
679 } 681 }
680 up_read(&current->mm->mmap_sem); 682 up_read(&current->mm->mmap_sem);
@@ -916,9 +918,9 @@ int kvm_mmu_init(void)
916{ 918{
917 int err; 919 int err;
918 920
919 hyp_idmap_start = virt_to_phys(__hyp_idmap_text_start); 921 hyp_idmap_start = kvm_virt_to_phys(__hyp_idmap_text_start);
920 hyp_idmap_end = virt_to_phys(__hyp_idmap_text_end); 922 hyp_idmap_end = kvm_virt_to_phys(__hyp_idmap_text_end);
921 hyp_idmap_vector = virt_to_phys(__kvm_hyp_init); 923 hyp_idmap_vector = kvm_virt_to_phys(__kvm_hyp_init);
922 924
923 if ((hyp_idmap_start ^ hyp_idmap_end) & PAGE_MASK) { 925 if ((hyp_idmap_start ^ hyp_idmap_end) & PAGE_MASK) {
924 /* 926 /*
@@ -945,7 +947,7 @@ int kvm_mmu_init(void)
945 */ 947 */
946 kvm_flush_dcache_to_poc(init_bounce_page, len); 948 kvm_flush_dcache_to_poc(init_bounce_page, len);
947 949
948 phys_base = virt_to_phys(init_bounce_page); 950 phys_base = kvm_virt_to_phys(init_bounce_page);
949 hyp_idmap_vector += phys_base - hyp_idmap_start; 951 hyp_idmap_vector += phys_base - hyp_idmap_start;
950 hyp_idmap_start = phys_base; 952 hyp_idmap_start = phys_base;
951 hyp_idmap_end = phys_base + len; 953 hyp_idmap_end = phys_base + len;