From: Ben Gardon <bgardon@google.com>
To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc: Paolo Bonzini <pbonzini@redhat.com>, Peter Xu <peterx@redhat.com>,
Sean Christopherson <seanjc@google.com>,
Peter Shier <pshier@google.com>,
David Matlack <dmatlack@google.com>,
Mingwei Zhang <mizhang@google.com>,
Yulei Zhang <yulei.kernel@gmail.com>,
Wanpeng Li <kernellwp@gmail.com>,
Xiao Guangrong <xiaoguangrong.eric@gmail.com>,
Kai Huang <kai.huang@intel.com>,
Keqian Zhu <zhukeqian1@huawei.com>,
David Hildenbrand <david@redhat.com>,
Ben Gardon <bgardon@google.com>
Subject: [PATCH 08/15] KVM: x86/mmu: Replace vcpu argument with kvm pointer in make_spte
Date: Mon, 15 Nov 2021 15:45:56 -0800 [thread overview]
Message-ID: <20211115234603.2908381-9-bgardon@google.com> (raw)
In-Reply-To: <20211115234603.2908381-1-bgardon@google.com>
No that nothing in make_spte actually needs the vCPU argument, just
pass in a pointer to the struct kvm. This allows the function to be used
in situations where there is no relevant struct vcpu.
No functional change intended.
Signed-off-by: Ben Gardon <bgardon@google.com>
---
arch/x86/kvm/mmu/spte.c | 8 ++++----
arch/x86/kvm/mmu/spte.h | 2 +-
2 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/arch/x86/kvm/mmu/spte.c b/arch/x86/kvm/mmu/spte.c
index d3b059e96c6e..d98723b14cec 100644
--- a/arch/x86/kvm/mmu/spte.c
+++ b/arch/x86/kvm/mmu/spte.c
@@ -89,7 +89,7 @@ static bool kvm_is_mmio_pfn(kvm_pfn_t pfn)
E820_TYPE_RAM);
}
-bool make_spte(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
+bool make_spte(struct kvm *kvm, struct kvm_mmu_page *sp,
struct kvm_memory_slot *slot, unsigned int pte_access,
gfn_t gfn, kvm_pfn_t pfn, u64 old_spte, bool prefetch,
bool can_unsync, bool host_writable, bool ad_need_write_protect,
@@ -161,7 +161,7 @@ bool make_spte(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
* e.g. it's write-tracked (upper-level SPs) or has one or more
* shadow pages and unsync'ing pages is not allowed.
*/
- if (mmu_try_to_unsync_pages(vcpu->kvm, slot, gfn, can_unsync, prefetch)) {
+ if (mmu_try_to_unsync_pages(kvm, slot, gfn, can_unsync, prefetch)) {
pgprintk("%s: found shadow page for %llx, marking ro\n",
__func__, gfn);
wrprot = true;
@@ -184,7 +184,7 @@ bool make_spte(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
if ((spte & PT_WRITABLE_MASK) && kvm_slot_dirty_track_enabled(slot)) {
/* Enforced by kvm_mmu_hugepage_adjust. */
WARN_ON(level > PG_LEVEL_4K);
- mark_page_dirty_in_slot(vcpu->kvm, slot, gfn);
+ mark_page_dirty_in_slot(kvm, slot, gfn);
}
*new_spte = spte;
@@ -201,7 +201,7 @@ bool vcpu_make_spte(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
kvm_is_mmio_pfn(pfn));
struct rsvd_bits_validate *shadow_zero_check = &vcpu->arch.mmu->shadow_zero_check;
- return make_spte(vcpu, sp, slot, pte_access, gfn, pfn, old_spte,
+ return make_spte(vcpu->kvm, sp, slot, pte_access, gfn, pfn, old_spte,
prefetch, can_unsync, host_writable,
ad_need_write_protect, mt_mask, shadow_zero_check,
new_spte);
diff --git a/arch/x86/kvm/mmu/spte.h b/arch/x86/kvm/mmu/spte.h
index 6134a10487c4..5bb055688080 100644
--- a/arch/x86/kvm/mmu/spte.h
+++ b/arch/x86/kvm/mmu/spte.h
@@ -329,7 +329,7 @@ static inline u64 get_mmio_spte_generation(u64 spte)
return gen;
}
-bool make_spte(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
+bool make_spte(struct kvm *kvm, struct kvm_mmu_page *sp,
struct kvm_memory_slot *slot, unsigned int pte_access,
gfn_t gfn, kvm_pfn_t pfn, u64 old_spte, bool prefetch,
bool can_unsync, bool host_writable, bool ad_need_write_protect,
--
2.34.0.rc1.387.gb447b232ab-goog
next prev parent reply other threads:[~2021-11-16 3:17 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-15 23:45 [PATCH 00/15] Currently disabling dirty logging with the TDP MMU is extremely slow. On a 96 vCPU / 96G VM it takes ~45 seconds to disable dirty logging with the TDP MMU, as opposed to ~3.5 seconds with the legacy MMU. This series optimizes TLB flushes and introduces in-place large page promotion, to bring the disable dirty log time down to ~2 seconds Ben Gardon
2021-11-15 23:45 ` [PATCH 01/15] KVM: x86/mmu: Remove redundant flushes when disabling dirty logging Ben Gardon
2021-11-18 8:26 ` Paolo Bonzini
2021-11-15 23:45 ` [PATCH 02/15] KVM: x86/mmu: Introduce vcpu_make_spte Ben Gardon
2021-11-15 23:45 ` [PATCH 03/15] KVM: x86/mmu: Factor wrprot for nested PML out of make_spte Ben Gardon
2021-11-15 23:45 ` [PATCH 04/15] KVM: x86/mmu: Factor mt_mask " Ben Gardon
2021-11-15 23:45 ` [PATCH 05/15] KVM: x86/mmu: Remove need for a vcpu from kvm_slot_page_track_is_active Ben Gardon
2021-11-18 8:25 ` Paolo Bonzini
2021-11-15 23:45 ` [PATCH 06/15] KVM: x86/mmu: Remove need for a vcpu from mmu_try_to_unsync_pages Ben Gardon
2021-11-18 8:25 ` Paolo Bonzini
2021-11-15 23:45 ` [PATCH 07/15] KVM: x86/mmu: Factor shadow_zero_check out of make_spte Ben Gardon
2021-11-15 23:45 ` Ben Gardon [this message]
2021-11-15 23:45 ` [PATCH 09/15] KVM: x86/mmu: Factor out the meat of reset_tdp_shadow_zero_bits_mask Ben Gardon
2021-11-15 23:45 ` [PATCH 10/15] KVM: x86/mmu: Propagate memslot const qualifier Ben Gardon
2021-11-18 8:27 ` Paolo Bonzini
2021-11-15 23:45 ` [PATCH 11/15] KVM: x86/MMU: Refactor vmx_get_mt_mask Ben Gardon
2021-11-18 8:30 ` Paolo Bonzini
2021-11-18 15:30 ` Sean Christopherson
2021-11-19 9:02 ` Paolo Bonzini
2021-11-22 18:11 ` Ben Gardon
2021-11-22 18:46 ` Sean Christopherson
2021-11-15 23:46 ` [PATCH 12/15] KVM: x86/mmu: Factor out part of vmx_get_mt_mask which does not depend on vcpu Ben Gardon
2021-11-15 23:46 ` [PATCH 13/15] KVM: x86/mmu: Add try_get_mt_mask to x86_ops Ben Gardon
2021-11-15 23:46 ` [PATCH 14/15] KVM: x86/mmu: Make kvm_is_mmio_pfn usable outside of spte.c Ben Gardon
2021-11-15 23:46 ` [PATCH 15/15] KVM: x86/mmu: Promote pages in-place when disabling dirty logging Ben Gardon
2021-11-25 4:18 ` Peter Xu
2021-11-29 18:31 ` Ben Gardon
2021-11-30 0:13 ` Sean Christopherson
2021-11-30 7:28 ` Peter Xu
2021-11-30 16:01 ` Sean Christopherson
2021-12-01 1:59 ` Peter Xu
2021-11-15 23:58 ` [PATCH 00/15] Currently disabling dirty logging with the TDP MMU is extremely slow. On a 96 vCPU / 96G VM it takes ~45 seconds to disable dirty logging with the TDP MMU, as opposed to ~3.5 seconds with the legacy MMU. This series optimizes TLB flushes and introduces in-place large page promotion, to bring the disable dirty log time down to ~2 seconds Ben Gardon
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