From: Lai Jiangshan <jiangshanlai@gmail.com>
To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
Paolo Bonzini <pbonzini@redhat.com>,
Sean Christopherson <seanjc@google.com>
Cc: Lai Jiangshan <jiangshan.ljs@antgroup.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
Wanpeng Li <wanpengli@tencent.com>,
Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>
Subject: [RFC PATCH V3 1/4] KVM: X86: Add arguement gfn and role to kvm_mmu_alloc_page()
Date: Wed, 30 Mar 2022 21:21:49 +0800 [thread overview]
Message-ID: <20220330132152.4568-2-jiangshanlai@gmail.com> (raw)
In-Reply-To: <20220330132152.4568-1-jiangshanlai@gmail.com>
From: Lai Jiangshan <jiangshan.ljs@antgroup.com>
kvm_mmu_alloc_page() will access to more bits of the role.
Signed-off-by: Lai Jiangshan <jiangshan.ljs@antgroup.com>
---
arch/x86/kvm/mmu/mmu.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index 1361eb4599b4..02eae110cbe1 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -1706,13 +1706,14 @@ static void drop_parent_pte(struct kvm_mmu_page *sp,
mmu_spte_clear_no_track(parent_pte);
}
-static struct kvm_mmu_page *kvm_mmu_alloc_page(struct kvm_vcpu *vcpu, int direct)
+static struct kvm_mmu_page *kvm_mmu_alloc_page(struct kvm_vcpu *vcpu, gfn_t gfn,
+ union kvm_mmu_page_role role)
{
struct kvm_mmu_page *sp;
sp = kvm_mmu_memory_cache_alloc(&vcpu->arch.mmu_page_header_cache);
sp->spt = kvm_mmu_memory_cache_alloc(&vcpu->arch.mmu_shadow_page_cache);
- if (!direct)
+ if (!role.direct)
sp->gfns = kvm_mmu_memory_cache_alloc(&vcpu->arch.mmu_gfn_array_cache);
set_page_private(virt_to_page(sp->spt), (unsigned long)sp);
@@ -1724,6 +1725,8 @@ static struct kvm_mmu_page *kvm_mmu_alloc_page(struct kvm_vcpu *vcpu, int direct
sp->mmu_valid_gen = vcpu->kvm->arch.mmu_valid_gen;
list_add(&sp->link, &vcpu->kvm->arch.active_mmu_pages);
kvm_mod_used_mmu_pages(vcpu->kvm, +1);
+ sp->gfn = gfn;
+ sp->role = role;
return sp;
}
@@ -2107,10 +2110,7 @@ static struct kvm_mmu_page *kvm_mmu_get_page(struct kvm_vcpu *vcpu,
++vcpu->kvm->stat.mmu_cache_miss;
- sp = kvm_mmu_alloc_page(vcpu, direct);
-
- sp->gfn = gfn;
- sp->role = role;
+ sp = kvm_mmu_alloc_page(vcpu, gfn, role);
hlist_add_head(&sp->hash_link, sp_list);
if (!direct) {
account_shadowed(vcpu->kvm, sp);
--
2.19.1.6.gb485710b
next prev parent reply other threads:[~2022-03-30 13:21 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-30 13:21 [RFC PATCH V3 0/4] KVM: X86: Add and use shadow page with level expanded or acting as pae_root Lai Jiangshan
2022-03-30 13:21 ` Lai Jiangshan [this message]
2022-03-30 13:21 ` [RFC PATCH V3 2/4] KVM: X86: Introduce role.glevel for level expanded pagetable Lai Jiangshan
2022-03-30 16:01 ` Lai Jiangshan
2022-04-12 21:31 ` Sean Christopherson
2022-04-13 4:13 ` Lai Jiangshan
2022-04-13 8:38 ` Paolo Bonzini
2022-04-13 14:42 ` Sean Christopherson
2022-04-13 14:46 ` Paolo Bonzini
2022-04-13 15:32 ` Sean Christopherson
2022-04-13 16:03 ` Paolo Bonzini
2022-04-14 15:51 ` Sean Christopherson
2022-04-14 16:32 ` Lai Jiangshan
2022-03-30 13:21 ` [RFC PATCH V3 3/4] KVM: X86: Alloc role.pae_root shadow page Lai Jiangshan
2022-04-12 21:14 ` Sean Christopherson
2022-04-14 9:07 ` Lai Jiangshan
2022-04-14 9:08 ` Paolo Bonzini
2022-04-14 9:32 ` Lai Jiangshan
2022-04-14 10:04 ` Paolo Bonzini
2022-04-14 11:06 ` Lai Jiangshan
2022-04-14 14:12 ` Paolo Bonzini
2022-04-14 14:42 ` Sean Christopherson
2022-04-14 13:35 ` Lai Jiangshan
2022-04-14 14:52 ` Sean Christopherson
2022-03-30 13:21 ` [RFC PATCH V3 4/4] KVM: X86: Use passthrough and pae_root shadow page for 32bit guests Lai Jiangshan
2022-04-12 21:34 ` Sean Christopherson
2022-04-12 9:35 ` [RFC PATCH V3 0/4] KVM: X86: Add and use shadow page with level expanded or acting as pae_root Lai Jiangshan
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