Starting with commit 84e848fd7a16 ("x86/hvm: disallow access to unknown MSRs")
accesses to unhandled MSRs result in #GP sent to the guest. This caused a
regression for Solaris who tries to acccess MSR_RAPL_POWER_UNIT and (unlike,
for example, Linux) does not catch exceptions when accessing MSRs tha
On 20.01.2021 23:49, Boris Ostrovsky wrote:
> --- a/xen/arch/x86/msr.c
> +++ b/xen/arch/x86/msr.c
> @@ -164,6 +164,34 @@ int init_vcpu_msr_policy(struct vcpu *v)
> return 0;
> }
>
> +/* Returns true if policy requires #GP to the guest. */
> +bool guest_unhandled_msr(const struct vcpu *v, ui
On 1/22/21 7:51 AM, Jan Beulich wrote:
> On 20.01.2021 23:49, Boris Ostrovsky wrote:
>
>> +
>> +/*
>> + * Accesses to unimplemented MSRs as part of emulation of instructions
>> + * other than guest's RDMSR/WRMSR should never succeed.
>> + */
>> +if ( !is_guest_msr_access )
On 22.01.2021 20:52, Boris Ostrovsky wrote:
> On 1/22/21 7:51 AM, Jan Beulich wrote:
>> On 20.01.2021 23:49, Boris Ostrovsky wrote:
>>> +
>>> +/*
>>> + * Accesses to unimplemented MSRs as part of emulation of instructions
>>> + * other than guest's RDMSR/WRMSR should never succeed.
>>>
On 21-01-25 11:22:08, Jan Beulich wrote:
> On 22.01.2021 20:52, Boris Ostrovsky wrote:
> > On 1/22/21 7:51 AM, Jan Beulich wrote:
> >> On 20.01.2021 23:49, Boris Ostrovsky wrote:
> >>> +
> >>> +/*
> >>> + * Accesses to unimplemented MSRs as part of emulation of
> >>> instructions
> >>> +
On 25.01.2021 19:42, Boris Ostrovsky wrote:
> On 21-01-25 11:22:08, Jan Beulich wrote:
>> On 22.01.2021 20:52, Boris Ostrovsky wrote:
>>> On 1/22/21 7:51 AM, Jan Beulich wrote:
On 20.01.2021 23:49, Boris Ostrovsky wrote:
> +
> +/*
> + * Accesses to unimplemented MSRs as par
On 21-01-26 10:05:47, Jan Beulich wrote:
> On 25.01.2021 19:42, Boris Ostrovsky wrote:
> > On 21-01-25 11:22:08, Jan Beulich wrote:
> >> On 22.01.2021 20:52, Boris Ostrovsky wrote:
> >>> On 1/22/21 7:51 AM, Jan Beulich wrote:
> On 20.01.2021 23:49, Boris Ostrovsky wrote:
> > +
> > +
On 26.01.2021 17:02, Boris Ostrovsky wrote:
> On 21-01-26 10:05:47, Jan Beulich wrote:
>> On 25.01.2021 19:42, Boris Ostrovsky wrote:
>>> On 21-01-25 11:22:08, Jan Beulich wrote:
On 22.01.2021 20:52, Boris Ostrovsky wrote:
> "Sibling" in terms of name (yes, it would be) or something else?
On Wed, Jan 20, 2021 at 05:49:11PM -0500, Boris Ostrovsky wrote:
> Starting with commit 84e848fd7a16 ("x86/hvm: disallow access to unknown MSRs")
> accesses to unhandled MSRs result in #GP sent to the guest. This caused a
> regression for Solaris who tries to acccess MSR_RAPL_POWER_UNIT and (unlike
On 18.02.2021 12:24, Roger Pau Monné wrote:
> On Wed, Jan 20, 2021 at 05:49:11PM -0500, Boris Ostrovsky wrote:
>> --- a/xen/arch/x86/hvm/vmx/vmx.c
>> +++ b/xen/arch/x86/hvm/vmx/vmx.c
>> @@ -3017,8 +3017,8 @@ static int vmx_msr_read_intercept(unsigned int msr,
>> uint64_t *msr_content)
>>
On Thu, Feb 18, 2021 at 12:57:13PM +0100, Jan Beulich wrote:
> On 18.02.2021 12:24, Roger Pau Monné wrote:
> > On Wed, Jan 20, 2021 at 05:49:11PM -0500, Boris Ostrovsky wrote:
> >> --- a/xen/arch/x86/hvm/vmx/vmx.c
> >> +++ b/xen/arch/x86/hvm/vmx/vmx.c
> >> @@ -3017,8 +3017,8 @@ static int vmx_msr_r
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