From: Joerg Roedel <joerg.roedel@amd.com>
To: Avi Kivity <avi@redhat.com>, Marcelo Tosatti <mtosatti@redhat.com>
Cc: <kvm@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
Joerg Roedel <joerg.roedel@amd.com>
Subject: [PATCH 2/7] KVM: SVM: Use host_vmcb_pa for vmload and vmsave
Date: Wed, 13 Jul 2011 17:32:20 +0200 [thread overview]
Message-ID: <1310571145-28930-3-git-send-email-joerg.roedel@amd.com> (raw)
In-Reply-To: <1310571145-28930-1-git-send-email-joerg.roedel@amd.com>
This saves copying over the vmload/vmsave switched part from
the host to the guest vmcb later.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---
arch/x86/kvm/svm.c | 7 ++++++-
1 files changed, 6 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 3d5990f..dc703ac 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -3704,9 +3704,13 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu)
/* Enter guest mode */
"push %%"R"ax \n\t"
- "mov %c[vmcb](%[svm]), %%"R"ax \n\t"
+ "mov %c[host_vmcb](%[svm]), %%"R"ax \n\t"
__ex(SVM_VMLOAD) "\n\t"
+ "mov (%%"R"sp), %%"R"ax\n\t"
+ "mov %c[vmcb](%[svm]), %%"R"ax \n\t"
__ex(SVM_VMRUN) "\n\t"
+ "mov (%%"R"sp), %%"R"ax\n\t"
+ "mov %c[host_vmcb](%[svm]), %%"R"ax \n\t"
__ex(SVM_VMSAVE) "\n\t"
"pop %%"R"ax \n\t"
@@ -3731,6 +3735,7 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu)
:
: [svm]"a"(svm),
[vmcb]"i"(offsetof(struct vcpu_svm, vmcb_pa)),
+ [host_vmcb]"i"(offsetof(struct vcpu_svm, host_vmcb_pa)),
[rbx]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_RBX])),
[rcx]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_RCX])),
[rdx]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_RDX])),
--
1.7.4.1
next prev parent reply other threads:[~2011-07-13 15:35 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-13 15:32 [PATCH 0/7] Implement Shadow VMCB for Nested SVM Joerg Roedel
2011-07-13 15:32 ` [PATCH 1/7] KVM: SVM: Keep seperate pointer to host-vmcb Joerg Roedel
2011-07-14 10:13 ` Avi Kivity
2011-07-13 15:32 ` Joerg Roedel [this message]
2011-07-14 11:29 ` [PATCH 2/7] KVM: SVM: Use host_vmcb_pa for vmload and vmsave Avi Kivity
2011-07-14 13:10 ` Joerg Roedel
2011-07-14 13:20 ` Avi Kivity
2011-07-14 13:52 ` Joerg Roedel
2011-07-14 14:01 ` Avi Kivity
2011-07-13 15:32 ` [PATCH 3/7] KVM: SVM: Reorder nested_svm_vmrun Joerg Roedel
2011-07-13 15:32 ` [PATCH 4/7] KVM: SVM: Use seperate VMCB for L2 guests Joerg Roedel
2011-07-14 11:38 ` Avi Kivity
2011-07-14 13:12 ` Joerg Roedel
2011-07-14 13:26 ` Avi Kivity
2011-07-14 13:40 ` Joerg Roedel
2011-07-14 13:43 ` Avi Kivity
2011-07-13 15:32 ` [PATCH 5/7] KVM: SVM: Remove nested.hsave state Joerg Roedel
2011-07-13 15:32 ` [PATCH 6/7] KVM: SVM: Rework hflags handling Joerg Roedel
2011-07-13 15:32 ` [PATCH 7/7] KVM: SVM: Don't change host intercepts in vmrun emulation Joerg Roedel
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