From: lantianyu1986@gmail.com
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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 V3 2/10] KVM/VMX: Fill range list in kvm_fill_hv_flush_list_func()
Date: Fri, 22 Feb 2019 23:06:29 +0800 [thread overview]
Message-ID: <20190222150637.2337-3-Tianyu.Lan@microsoft.com> (raw)
In-Reply-To: <20190222150637.2337-1-Tianyu.Lan@microsoft.com>
From: Lan Tianyu <Tianyu.Lan@microsoft.com>
Populate ranges on the flush list into struct hv_guest_mapping_flush_list
when flush list is available in the struct kvm_tlb_range.
Signed-off-by: Lan Tianyu <Tianyu.Lan@microsoft.com>
---
Change since v2:
- Fix calculation of flush pages in the kvm_fill_hv_flush_list_func()
---
arch/x86/include/asm/kvm_host.h | 7 +++++++
arch/x86/kvm/vmx/vmx.c | 18 ++++++++++++++++--
2 files changed, 23 insertions(+), 2 deletions(-)
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 875ae7256608..9fc9dd0c92cb 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -318,6 +318,12 @@ struct kvm_rmap_head {
struct kvm_mmu_page {
struct list_head link;
+
+ /*
+ * Tlb flush with range list uses struct kvm_mmu_page as list entry
+ * and all list operations should be under protection of mmu_lock.
+ */
+ struct hlist_node flush_link;
struct hlist_node hash_link;
bool unsync;
bool mmio_cached;
@@ -441,6 +447,7 @@ struct kvm_mmu {
struct kvm_tlb_range {
u64 start_gfn;
u64 pages;
+ struct hlist_head *flush_list;
};
enum pmc_type {
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 77b5379e3655..85139d318490 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -432,9 +432,23 @@ static int kvm_fill_hv_flush_list_func(struct hv_guest_mapping_flush_list *flush
void *data)
{
struct kvm_tlb_range *range = data;
+ struct kvm_mmu_page *sp;
- return hyperv_fill_flush_guest_mapping_list(flush, 0, range->start_gfn,
- range->pages);
+ if (!range->flush_list) {
+ return hyperv_fill_flush_guest_mapping_list(flush,
+ 0, range->start_gfn, range->pages);
+ } else {
+ int offset = 0;
+
+ hlist_for_each_entry(sp, range->flush_list, flush_link) {
+ int pages = KVM_PAGES_PER_HPAGE(sp->role.level + 1);
+
+ offset = hyperv_fill_flush_guest_mapping_list(flush,
+ offset, sp->gfn, pages);
+ }
+
+ return offset;
+ }
}
static inline int __hv_remote_flush_tlb_with_range(struct kvm *kvm,
--
2.14.4
next prev parent reply other threads:[~2019-02-22 15:07 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-22 15:06 [PATCH V3 00/10] X86/KVM/Hyper-V: Add HV ept tlb range list flush support in KVM lantianyu1986
2019-02-22 15:06 ` [PATCH V3 1/10] X86/Hyper-V: Add parameter offset for hyperv_fill_flush_guest_mapping_list() lantianyu1986
2019-02-22 17:08 ` Stephen Hemminger
2019-02-26 13:00 ` Tianyu Lan
2019-02-26 14:09 ` [Update PATCH " lantianyu1986
2019-02-22 15:06 ` lantianyu1986 [this message]
2019-02-22 15:06 ` [PATCH V3 3/10] KVM/MMU: Introduce tlb flush with range list lantianyu1986
2019-02-22 15:06 ` [PATCH V3 4/10] KVM/MMU: Use range flush in sync_page() lantianyu1986
2019-02-22 15:06 ` [PATCH V3 5/10] KVM/MMU: Flush tlb directly in the kvm_mmu_slot_gfn_write_protect() lantianyu1986
2019-02-22 15:06 ` [PATCH V3 6/10] KVM: Add kvm_get_memslot() to get memslot via slot id lantianyu1986
2019-02-22 15:06 ` [PATCH V3 7/10] KVM: Use tlb range flush in the kvm_vm_ioctl_get/clear_dirty_log() lantianyu1986
2019-02-22 15:06 ` [PATCH V3 8/10] KVM: Add flush parameter for kvm_age_hva() lantianyu1986
2019-02-22 15:06 ` [PATCH V3 9/10] KVM/MMU: Use tlb range flush in the kvm_age_hva() lantianyu1986
2019-02-22 15:06 ` [PATCH V3 10/10] KVM/MMU: Add last_level flag in the struct mmu_spte_page lantianyu1986
2019-02-22 18:25 ` [PATCH V3 00/10] X86/KVM/Hyper-V: Add HV ept tlb range list flush support in KVM Paolo Bonzini
2019-02-23 14:37 ` Tianyu Lan
2019-02-26 14:21 ` [Update PATCH V3 2/10] KVM/VMX: Fill range list in kvm_fill_hv_flush_list_func() lantianyu1986
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