Add KVM_DIRTY_LOG_INITIALLY_SET support on LoongArch system, this
feature comes from other architectures like x86 and arm64.
Signed-off-by: Bibo Mao <maobibo@xxxxxxxxxxx>
---
arch/loongarch/include/asm/kvm_host.h | 3 +++
arch/loongarch/kvm/mmu.c | 7 +++++++
2 files changed, 10 insertions(+)
diff --git a/arch/loongarch/include/asm/kvm_host.h b/arch/loongarch/include/asm/kvm_host.h
index 32c4948f534f..309ce329b747 100644
--- a/arch/loongarch/include/asm/kvm_host.h
+++ b/arch/loongarch/include/asm/kvm_host.h
@@ -37,6 +37,9 @@
#define KVM_GUESTDBG_VALID_MASK \
(KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_SW_BP | KVM_GUESTDBG_SINGLESTEP)
+#define KVM_DIRTY_LOG_MANUAL_CAPS \
+ (KVM_DIRTY_LOG_MANUAL_PROTECT_ENABLE | KVM_DIRTY_LOG_INITIALLY_SET)
+
struct kvm_vm_stat {
struct kvm_vm_stat_generic generic;
u64 pages;
diff --git a/arch/loongarch/kvm/mmu.c b/arch/loongarch/kvm/mmu.c
index 092c063e4e56..10da8a63cd3d 100644
--- a/arch/loongarch/kvm/mmu.c
+++ b/arch/loongarch/kvm/mmu.c
@@ -467,6 +467,13 @@ void kvm_arch_commit_memory_region(struct kvm *kvm,
* kvm_arch_flush_shadow_memslot()
*/
if (!(old_flags & KVM_MEM_LOG_DIRTY_PAGES) && log_dirty_pages) {
+ /*
+ * Initially-all-set does not require write protecting any page
+ * because they're all assumed to be dirty.
+ */
+ if (kvm_dirty_log_manual_protect_and_init_set(kvm))
+ return;
+
spin_lock(&kvm->mmu_lock);
/* Write protect GPA page table entries */
needs_flush = kvm_mkclean_gpa_pt(kvm, new->base_gfn,
--
2.39.3
