From: Ricardo Koller <ricarkol@google.com>
To: pbonzini@redhat.com, maz@kernel.org, oupton@google.com,
yuzenghui@huawei.com, dmatlack@google.com
Cc: kvm@vger.kernel.org, kvmarm@lists.linux.dev, qperret@google.com,
catalin.marinas@arm.com, andrew.jones@linux.dev,
seanjc@google.com, alexandru.elisei@arm.com,
suzuki.poulose@arm.com, eric.auger@redhat.com, gshan@redhat.com,
reijiw@google.com, rananta@google.com, bgardon@google.com,
ricarkol@gmail.com, Ricardo Koller <ricarkol@google.com>
Subject: [PATCH v3 05/12] KVM: arm64: Refactor kvm_arch_commit_memory_region()
Date: Wed, 15 Feb 2023 17:40:39 +0000 [thread overview]
Message-ID: <20230215174046.2201432-6-ricarkol@google.com> (raw)
In-Reply-To: <20230215174046.2201432-1-ricarkol@google.com>
Refactor kvm_arch_commit_memory_region() as a preparation for a future
commit to look cleaner and more understandable. Also, it looks more
like its x86 counterpart (in kvm_mmu_slot_apply_flags()).
No functional change intended.
Signed-off-by: Ricardo Koller <ricarkol@google.com>
---
arch/arm64/kvm/mmu.c | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c
index 9bd3c2cfb476..d2c5e6992459 100644
--- a/arch/arm64/kvm/mmu.c
+++ b/arch/arm64/kvm/mmu.c
@@ -1761,20 +1761,27 @@ void kvm_arch_commit_memory_region(struct kvm *kvm,
const struct kvm_memory_slot *new,
enum kvm_mr_change change)
{
+ bool log_dirty_pages = new && new->flags & KVM_MEM_LOG_DIRTY_PAGES;
+
/*
* At this point memslot has been committed and there is an
* allocated dirty_bitmap[], dirty pages will be tracked while the
* memory slot is write protected.
*/
- if (change != KVM_MR_DELETE && new->flags & KVM_MEM_LOG_DIRTY_PAGES) {
+ if (log_dirty_pages) {
+
+ if (change == KVM_MR_DELETE)
+ return;
+
/*
* If we're with initial-all-set, we don't need to write
* protect any pages because they're all reported as dirty.
* Huge pages and normal pages will be write protect gradually.
*/
- if (!kvm_dirty_log_manual_protect_and_init_set(kvm)) {
- kvm_mmu_wp_memory_region(kvm, new->id);
- }
+ if (kvm_dirty_log_manual_protect_and_init_set(kvm))
+ return;
+
+ kvm_mmu_wp_memory_region(kvm, new->id);
}
}
--
2.39.1.637.g21b0678d19-goog
next prev parent reply other threads:[~2023-02-15 17:40 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-15 17:40 [PATCH v3 00/12] Implement Eager Page Splitting for ARM Ricardo Koller
2023-02-15 17:40 ` [PATCH v3 01/12] KVM: arm64: Add KVM_PGTABLE_WALK ctx->flags for skipping BBM and CMO Ricardo Koller
2023-02-16 2:56 ` Shaoqin Huang
2023-02-16 18:41 ` Ricardo Koller
2023-02-15 17:40 ` [PATCH v3 02/12] KVM: arm64: Rename free_unlinked to free_removed Ricardo Koller
2023-02-15 23:51 ` Oliver Upton
2023-02-16 3:13 ` Shaoqin Huang
2023-02-16 18:44 ` Ricardo Koller
2023-02-15 17:40 ` [PATCH v3 03/12] KVM: arm64: Add helper for creating unlinked stage2 subtrees Ricardo Koller
2023-02-16 0:13 ` Oliver Upton
2023-02-16 18:34 ` Ricardo Koller
2023-02-15 17:40 ` [PATCH v3 04/12] KVM: arm64: Add kvm_pgtable_stage2_split() Ricardo Koller
2023-02-16 0:36 ` Oliver Upton
2023-02-16 18:07 ` Ricardo Koller
2023-02-16 18:14 ` Ricardo Koller
2023-02-16 12:22 ` Shaoqin Huang
2023-02-16 18:30 ` Ricardo Koller
2023-02-17 4:07 ` Shaoqin Huang
2023-02-15 17:40 ` Ricardo Koller [this message]
2023-02-15 17:40 ` [PATCH v3 06/12] KVM: arm64: Add kvm_uninit_stage2_mmu() Ricardo Koller
2023-02-15 17:40 ` [PATCH v3 07/12] KVM: arm64: Export kvm_are_all_memslots_empty() Ricardo Koller
2023-02-15 17:40 ` [PATCH v3 08/12] KVM: arm64: Add KVM_CAP_ARM_EAGER_SPLIT_CHUNK_SIZE Ricardo Koller
2023-02-15 17:40 ` [PATCH v3 09/12] KVM: arm64: Split huge pages when dirty logging is enabled Ricardo Koller
2023-02-15 17:40 ` [PATCH v3 10/12] KVM: arm64: Open-code kvm_mmu_write_protect_pt_masked() Ricardo Koller
2023-02-15 17:40 ` [PATCH v3 11/12] KVM: arm64: Split huge pages during KVM_CLEAR_DIRTY_LOG Ricardo Koller
2023-02-15 17:40 ` [PATCH v3 12/12] KVM: arm64: Use local TLBI on permission relaxation Ricardo Koller
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