From: konrad.wilk@oracle.com
To: speck@linutronix.de
Subject: [MODERATED] [PATCH v4 7/8] [PATCH v4 7/8] Linux Patch #7
Date: Sat, 23 Jun 2018 09:54:21 -0400 [thread overview]
Message-ID: <20180623135445.930989669@localhost.localdomain> (raw)
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---
arch/x86/kvm/vmx.c | 22 ++++++++++++++--------
1 file changed, 14 insertions(+), 8 deletions(-)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index e7c69ef5b918..9b18848ccaba 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -2439,9 +2439,9 @@ static void add_atomic_switch_msr_special(struct vcpu_vmx *vmx,
}
static void add_atomic_switch_msr(struct vcpu_vmx *vmx, unsigned msr,
- u64 guest_val, u64 host_val)
+ u64 guest_val, u64 host_val, bool entry_only)
{
- int i, j;
+ int i, j = 0;
struct msr_autoload *m = &vmx->msr_autoload;
switch (msr) {
@@ -2477,7 +2477,9 @@ static void add_atomic_switch_msr(struct vcpu_vmx *vmx, unsigned msr,
}
i = find_msr(&m->guest, msr);
- j = find_msr(&m->host, msr);
+ if (!entry_only)
+ j = find_msr(&m->host, msr);
+
if (i == NR_AUTOLOAD_MSRS || j == NR_AUTOLOAD_MSRS) {
printk_once(KERN_WARNING "Not enough msr switch entries. "
"Can't add msr %x\n", msr);
@@ -2487,12 +2489,16 @@ static void add_atomic_switch_msr(struct vcpu_vmx *vmx, unsigned msr,
i = m->guest.nr++;
vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, m->guest.nr);
}
+ m->guest.val[i].index = msr;
+ m->guest.val[i].value = guest_val;
+
+ if (entry_only)
+ return;
+
if (j < 0) {
j = m->host.nr++;
vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, m->host.nr);
}
- m->guest.val[i].index = msr;
- m->guest.val[i].value = guest_val;
m->host.val[j].index = msr;
m->host.val[j].value = host_val;
}
@@ -2538,7 +2544,7 @@ static bool update_transition_efer(struct vcpu_vmx *vmx, int efer_offset)
guest_efer &= ~EFER_LME;
if (guest_efer != host_efer)
add_atomic_switch_msr(vmx, MSR_EFER,
- guest_efer, host_efer);
+ guest_efer, host_efer, false);
return false;
} else {
guest_efer &= ~ignore_bits;
@@ -4031,7 +4037,7 @@ static int vmx_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
vcpu->arch.ia32_xss = data;
if (vcpu->arch.ia32_xss != host_xss)
add_atomic_switch_msr(vmx, MSR_IA32_XSS,
- vcpu->arch.ia32_xss, host_xss);
+ vcpu->arch.ia32_xss, host_xss, false);
else
clear_atomic_switch_msr(vmx, MSR_IA32_XSS);
break;
@@ -9978,7 +9984,7 @@ static void atomic_switch_perf_msrs(struct vcpu_vmx *vmx)
clear_atomic_switch_msr(vmx, msrs[i].msr);
else
add_atomic_switch_msr(vmx, msrs[i].msr, msrs[i].guest,
- msrs[i].host);
+ msrs[i].host, false);
}
static void vmx_arm_hv_timer(struct kvm_vcpu *vcpu)
--
2.14.3
next reply other threads:[~2018-06-26 2:45 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-23 13:54 konrad.wilk [this message]
2018-06-27 10:52 ` [PATCH v4 7/8] [PATCH v4 7/8] Linux Patch #7 Thomas Gleixner
2018-06-27 14:32 ` [MODERATED] " Konrad Rzeszutek Wilk
2018-06-27 14:47 ` Andrew Cooper
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