> So something bothers me still about this bug. What you did correctly
> restores the old behavior - but it shouldn't be fixing a bug.
>
> The only reason you need to schedule an update for the KVM clock area is
> if a new VCPU has been created, you have an unstable TSC.. or something
> chan
On Sat, Mar 26, 2011 at 11:43:47AM +0200, Avi Kivity wrote:
> On 03/25/2011 11:29 AM, Joerg Roedel wrote:
>> This patch add intercept checks into the KVM instruction
>> emulator to check for the 8 instructions that access the
>> descriptor table addresses.
>>
>>
>> +static struct opcode group6[] =
On Sat, Mar 26, 2011 at 11:37:42AM +0200, Avi Kivity wrote:
> On 03/25/2011 11:29 AM, Joerg Roedel wrote:
>> This patch adds all necessary intercept checks for
>> instructions that access the crX registers.
>>
>>
>> @@ -3871,11 +3871,89 @@ static void svm_fpu_deactivate(struct kvm_vcpu *vcpu)
>>
On 26.03.2011 10:15, Avi Kivity wrote:
> On 03/25/2011 11:32 AM, Tomasz Chmielewski wrote:
>> I got this on a 2.6.38.1 system which (I think) had some problem
>> accessing guest image on a btrfs filesystem.
>>
>>
>> general protection fault: [#1] SMP
(...)
> 0: 55 push %rbp
> 1: 48 89 e5 mo
On 03/25/2011 11:29 AM, Joerg Roedel wrote:
Hi,
this is version 2 of the patch-set to make the KVM instruction emulator
aware of intercepted instructions. Noting the differences to v1 does not
make a lot of sense this this is basically a re-implementation so that
almost everything changed :-)
Th
On 03/25/2011 11:29 AM, Joerg Roedel wrote:
From: Avi Kivity
When running in guest mode, certain instructions can be intercepted by
hardware. This also holds for nested guests running on emulated
virtualization hardware, in particular instructions emulated by kvm
itself.
This patch adds a fram
On 03/25/2011 11:29 AM, Joerg Roedel wrote:
This patch add intercept checks for emulated one-byte
instructions to the KVM instruction emulation path.
#undef PRE_EX
@@ -3990,6 +3997,13 @@ static int svm_check_intercept(struct kvm_vcpu *vcpu,
else
vmcb->c
On 03/25/2011 11:29 AM, Joerg Roedel wrote:
This patch add intercept checks into the KVM instruction
emulator to check for the 8 instructions that access the
descriptor table addresses.
+static struct opcode group6[] = {
+ DI(ModRM,sldt),
+ DI(ModRM,str),
+ DI(
On 03/25/2011 11:29 AM, Joerg Roedel wrote:
This patch adds all necessary intercept checks for
instructions that access the crX registers.
@@ -3871,11 +3871,89 @@ static void svm_fpu_deactivate(struct kvm_vcpu *vcpu)
update_cr0_intercept(svm);
}
+#define POST_EX(exit) { .exit_code =
On 03/25/2011 11:29 AM, Joerg Roedel wrote:
This patch adds a callback into kvm_x86_ops so that svm and
vmx code can do intercept checks on emulated instructions.
+/*
+ * This struct is used to carry enough information from the instruction
+ * decoder to main KVM so that a decision can be made
On 03/25/2011 11:32 AM, Tomasz Chmielewski wrote:
I got this on a 2.6.38.1 system which (I think) had some problem accessing
guest image on a btrfs filesystem.
general protection fault: [#1] SMP
last sysfs file: /sys/kernel/uevent_seqnum
CPU 0
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