From: lantianyu1986@gmail.com
To: unlisted-recipients:; (no To-header on input)
Cc: Lan Tianyu <Tianyu.Lan@microsoft.com>,
christoffer.dall@arm.com, marc.zyngier@arm.com,
linux@armlinux.org.uk, catalin.marinas@arm.com,
will.deacon@arm.com, jhogan@kernel.org, ralf@linux-mips.org,
paul.burton@mips.com, paulus@ozlabs.org,
benh@kernel.crashing.org, mpe@ellerman.id.au,
pbonzini@redhat.com, rkrcmar@redhat.com, tglx@linutronix.de,
mingo@redhat.com, bp@alien8.de, hpa@zytor.com, x86@kernel.org,
linux-arm-kernel@lists.infradead.org,
kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org,
linux-mips@vger.kernel.org, kvm-ppc@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org,
michael.h.kelley@microsoft.com, kys@microsoft.com,
vkuznets@redhat.com
Subject: [PATCH V2 4/10] KVM/MMU: Introduce tlb flush with range list
Date: Sat, 2 Feb 2019 09:38:20 +0800 [thread overview]
Message-ID: <20190202013825.51261-5-Tianyu.Lan@microsoft.com> (raw)
In-Reply-To: <20190202013825.51261-1-Tianyu.Lan@microsoft.com>
From: Lan Tianyu <Tianyu.Lan@microsoft.com>
This patch is to introduce tlb flush with range list interface and use
struct kvm_mmu_page as list entry. Use flush list function in the
kvm_mmu_commit_zap_page().
Signed-off-by: Lan Tianyu <Tianyu.Lan@microsoft.com>
---
arch/x86/kvm/mmu.c | 25 ++++++++++++++++++++++++-
1 file changed, 24 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 70cafd3f95ab..d57574b49823 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -289,6 +289,20 @@ static void kvm_flush_remote_tlbs_with_address(struct kvm *kvm,
range.start_gfn = start_gfn;
range.pages = pages;
+ range.flush_list = NULL;
+
+ kvm_flush_remote_tlbs_with_range(kvm, &range);
+}
+
+static void kvm_flush_remote_tlbs_with_list(struct kvm *kvm,
+ struct hlist_head *flush_list)
+{
+ struct kvm_tlb_range range;
+
+ if (hlist_empty(flush_list))
+ return;
+
+ range.flush_list = flush_list;
kvm_flush_remote_tlbs_with_range(kvm, &range);
}
@@ -2708,6 +2722,7 @@ static void kvm_mmu_commit_zap_page(struct kvm *kvm,
struct list_head *invalid_list)
{
struct kvm_mmu_page *sp, *nsp;
+ HLIST_HEAD(flush_list);
if (list_empty(invalid_list))
return;
@@ -2721,7 +2736,15 @@ static void kvm_mmu_commit_zap_page(struct kvm *kvm,
* In addition, kvm_flush_remote_tlbs waits for all vcpus to exit
* guest mode and/or lockless shadow page table walks.
*/
- kvm_flush_remote_tlbs(kvm);
+ if (kvm_available_flush_tlb_with_range()) {
+ list_for_each_entry(sp, invalid_list, link)
+ if (sp->last_level)
+ hlist_add_head(&sp->flush_link, &flush_list);
+
+ kvm_flush_remote_tlbs_with_list(kvm, &flush_list);
+ } else {
+ kvm_flush_remote_tlbs(kvm);
+ }
list_for_each_entry_safe(sp, nsp, invalid_list, link) {
WARN_ON(!sp->role.invalid || sp->root_count);
--
2.14.4
next prev parent reply other threads:[~2019-02-02 1:39 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-02 1:38 [PATCH V2 00/10] X86/KVM/Hyper-V: Add HV ept tlb range list flush support in KVM lantianyu1986
2019-02-02 1:38 ` [PATCH V2 1/10] X86/Hyper-V: Add parameter offset for hyperv_fill_flush_guest_mapping_list() lantianyu1986
2019-02-02 1:38 ` [PATCH V2 2/10] KVM/VMX: Fill range list in kvm_fill_hv_flush_list_func() lantianyu1986
2019-02-02 1:38 ` [PATCH V2 3/10] KVM/MMU: Add last_level in the struct mmu_spte_page lantianyu1986
2019-02-14 16:12 ` Paolo Bonzini
2019-02-14 16:32 ` Paolo Bonzini
2019-02-15 15:05 ` Tianyu Lan
2019-02-15 15:22 ` Paolo Bonzini
2019-02-22 15:16 ` Tianyu Lan
2019-02-02 1:38 ` lantianyu1986 [this message]
2019-02-02 1:38 ` [PATCH V2 5/10] KVM/MMU: Flush tlb with range list in sync_page() lantianyu1986
2019-02-02 1:38 ` [PATCH V2 6/10] KVM/MMU: Flush tlb directly in the kvm_mmu_slot_gfn_write_protect() lantianyu1986
2019-02-02 1:38 ` [PATCH V2 7/10] KVM: Add kvm_get_memslot() to get memslot via slot id lantianyu1986
2019-02-02 1:38 ` [PATCH V2 8/10] KVM: Use tlb range flush in the kvm_vm_ioctl_get/clear_dirty_log() lantianyu1986
2019-02-02 1:38 ` [PATCH V2 9/10] KVM: Add flush parameter for kvm_age_hva() lantianyu1986
2019-02-14 16:40 ` [PATCH V2 00/10] X86/KVM/Hyper-V: Add HV ept tlb range list flush support in KVM Paolo Bonzini
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