From: Joerg Roedel <joerg.roedel@amd.com>
To: Avi Kivity <avi@redhat.com>
Cc: Alexander Graf <agraf@suse.de>,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
Joerg Roedel <joerg.roedel@amd.com>
Subject: [PATCH 09/21] kvm/svm: do nested vmexit in nested_svm_exit_handled
Date: Fri, 7 Aug 2009 11:49:36 +0200 [thread overview]
Message-ID: <1249638588-10982-10-git-send-email-joerg.roedel@amd.com> (raw)
In-Reply-To: <1249638588-10982-1-git-send-email-joerg.roedel@amd.com>
If this function returns true a nested vmexit is required. Move that
vmexit into the nested_svm_exit_handled function. This also simplifies
the handling of nested #pf intercepts in this function.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Acked-by: Alexander Graf <agraf@suse.de>
---
arch/x86/kvm/svm.c | 42 +++++++++++++++++++-----------------------
1 files changed, 19 insertions(+), 23 deletions(-)
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index b2c9a9e..c473ad9 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -1369,8 +1369,6 @@ static int nested_svm_check_exception(struct vcpu_svm *svm, unsigned nr,
svm->vmcb->control.exit_info_2 = svm->vcpu.arch.cr2;
if (nested_svm_exit_handled(svm, false)) {
nsvm_printk("VMexit -> EXCP 0x%x\n", nr);
-
- nested_svm_vmexit(svm);
return 1;
}
}
@@ -1391,7 +1389,6 @@ static inline int nested_svm_intr(struct vcpu_svm *svm)
if (nested_svm_exit_handled(svm, false)) {
nsvm_printk("VMexit -> INTR\n");
- nested_svm_vmexit(svm);
return 1;
}
}
@@ -1500,15 +1497,7 @@ static int nested_svm_exit_handled_msr(struct vcpu_svm *svm,
static int nested_svm_exit_handled(struct vcpu_svm *svm, bool kvm_override)
{
u32 exit_code = svm->vmcb->control.exit_code;
-
- switch (svm->vmcb->control.exit_code) {
- case SVM_EXIT_MSR:
- return nested_svm_do(svm, svm->nested.vmcb,
- svm->nested.vmcb_msrpm, NULL,
- nested_svm_exit_handled_msr);
- default:
- break;
- }
+ bool vmexit = false;
if (kvm_override) {
switch (exit_code) {
@@ -1531,45 +1520,55 @@ static int nested_svm_exit_handled(struct vcpu_svm *svm, bool kvm_override)
}
switch (exit_code) {
+ case SVM_EXIT_MSR:
+ if (nested_svm_do(svm, svm->nested.vmcb, svm->nested.vmcb_msrpm,
+ NULL, nested_svm_exit_handled_msr))
+ vmexit = true;
+ break;
case SVM_EXIT_READ_CR0 ... SVM_EXIT_READ_CR8: {
u32 cr_bits = 1 << (exit_code - SVM_EXIT_READ_CR0);
if (svm->nested.intercept_cr_read & cr_bits)
- return 1;
+ vmexit = true;
break;
}
case SVM_EXIT_WRITE_CR0 ... SVM_EXIT_WRITE_CR8: {
u32 cr_bits = 1 << (exit_code - SVM_EXIT_WRITE_CR0);
if (svm->nested.intercept_cr_write & cr_bits)
- return 1;
+ vmexit = true;
break;
}
case SVM_EXIT_READ_DR0 ... SVM_EXIT_READ_DR7: {
u32 dr_bits = 1 << (exit_code - SVM_EXIT_READ_DR0);
if (svm->nested.intercept_dr_read & dr_bits)
- return 1;
+ vmexit = true;
break;
}
case SVM_EXIT_WRITE_DR0 ... SVM_EXIT_WRITE_DR7: {
u32 dr_bits = 1 << (exit_code - SVM_EXIT_WRITE_DR0);
if (svm->nested.intercept_dr_write & dr_bits)
- return 1;
+ vmexit = true;
break;
}
case SVM_EXIT_EXCP_BASE ... SVM_EXIT_EXCP_BASE + 0x1f: {
u32 excp_bits = 1 << (exit_code - SVM_EXIT_EXCP_BASE);
if (svm->nested.intercept_exceptions & excp_bits)
- return 1;
+ vmexit = true;
break;
}
default: {
u64 exit_bits = 1ULL << (exit_code - SVM_EXIT_INTR);
nsvm_printk("exit code: 0x%x\n", exit_code);
if (svm->nested.intercept & exit_bits)
- return 1;
+ vmexit = true;
}
}
- return 0;
+ if (vmexit) {
+ nsvm_printk("#VMEXIT reason=%04x\n", exit_code);
+ nested_svm_vmexit(svm);
+ }
+
+ return vmexit;
}
static inline void copy_vmcb_control_area(struct vmcb *dst_vmcb, struct vmcb *from_vmcb)
@@ -2328,11 +2327,8 @@ static int handle_exit(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
nsvm_printk("nested handle_exit: 0x%x | 0x%lx | 0x%lx | 0x%lx\n",
exit_code, svm->vmcb->control.exit_info_1,
svm->vmcb->control.exit_info_2, svm->vmcb->save.rip);
- if (nested_svm_exit_handled(svm, true)) {
- nested_svm_vmexit(svm);
- nsvm_printk("-> #VMEXIT\n");
+ if (nested_svm_exit_handled(svm, true))
return 1;
- }
}
svm_complete_interrupts(svm);
--
1.6.3.3
next prev parent reply other threads:[~2009-08-07 9:53 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-07 9:49 [PATCH 0/21] Nested SVM cleanups v2 Joerg Roedel
2009-08-07 9:49 ` [PATCH 01/21] kvm/svm: add helper functions for global interrupt flag Joerg Roedel
2009-08-07 9:49 ` [PATCH 02/21] kvm/svm: optimize nested #vmexit Joerg Roedel
2009-08-07 9:49 ` [PATCH 03/21] kvm/svm: optimize nested vmrun Joerg Roedel
2009-08-07 9:49 ` [PATCH 04/21] kvm/svm: copy only necessary parts of the control area on vmrun/vmexit Joerg Roedel
2009-08-07 9:49 ` [PATCH 05/21] kvm/svm: complete interrupts after handling nested exits Joerg Roedel
2009-08-07 9:49 ` [PATCH 06/21] kvm/svm: move nested svm state into seperate struct Joerg Roedel
2009-08-07 9:49 ` [PATCH 07/21] kvm/svm: cache nested intercepts Joerg Roedel
2009-08-07 9:49 ` [PATCH 08/21] kvm/svm: consolidate nested_svm_exit_handled Joerg Roedel
2009-08-07 9:49 ` Joerg Roedel [this message]
2009-08-07 9:49 ` [PATCH 10/21] kvm/svm: simplify nested_svm_check_exception Joerg Roedel
2009-08-07 9:49 ` [PATCH 11/21] kvm/svm: get rid of nested_svm_vmexit_real Joerg Roedel
2009-08-07 9:49 ` [PATCH 12/21] kvm/svm: clean up nested_svm_exit_handled_msr Joerg Roedel
2009-08-07 9:49 ` [PATCH 13/21] kvm/svm: clean up nestec vmload/vmsave paths Joerg Roedel
2009-08-07 9:49 ` [PATCH 14/21] kvm/svm: clean up nested vmrun path Joerg Roedel
2009-08-07 9:49 ` [PATCH 15/21] kvm/svm: remove nested_svm_do and helper functions Joerg Roedel
2009-08-07 9:49 ` [PATCH 16/21] kvm/svm: handle errors in vmrun emulation path appropriatly Joerg Roedel
2009-08-07 9:49 ` [PATCH 17/21] kvm/svm: move special nested exit handling to separate function Joerg Roedel
2009-08-07 9:49 ` [PATCH 18/21] kvm/svm: remove unnecessary is_nested check from svm_cpu_run Joerg Roedel
2009-08-07 9:49 ` [PATCH 19/21] kvm/svm: move nested_svm_intr main logic out of if-clause Joerg Roedel
2009-08-07 9:49 ` [PATCH 20/21] kvm/svm: check for nested VINTR flag in svm_interrupt_allowed Joerg Roedel
2009-08-07 9:49 ` [PATCH 21/21] kvm/svm: enable nested svm by default Joerg Roedel
2009-08-09 9:41 ` [PATCH 0/21] Nested SVM cleanups v2 Avi Kivity
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