>>> On 17.07.18 at 22:52, wrote:
> On Mon, Jul 16, 2018 at 10:45:15AM -0600, Jan Beulich wrote:
>> --- a/xen/arch/x86/spec_ctrl.c
>> +++ b/xen/arch/x86/spec_ctrl.c
>> @@ -256,9 +256,10 @@ static void __init print_details(enum in
>> boot_cpu_has(X86_FEATURE_SC_RSB_HVM) ? " RSB"
On Mon, Jul 16, 2018 at 10:45:15AM -0600, Jan Beulich wrote:
> Signed-off-by: Jan Beulich
>
> --- a/xen/arch/x86/pv/domain.c
> +++ b/xen/arch/x86/pv/domain.c
> @@ -288,6 +288,12 @@ int pv_domain_initialise(struct domain *
> return rc;
> }
>
> +bool __init xpti_pcid_enabled(void)
> +{
> +
>>> On 17.07.18 at 13:05, wrote:
> On Mon, Jul 16, 2018 at 10:45:15AM -0600, Jan Beulich wrote:
>> Signed-off-by: Jan Beulich
>>
>> --- a/xen/arch/x86/pv/domain.c
>> +++ b/xen/arch/x86/pv/domain.c
>> @@ -288,6 +288,12 @@ int pv_domain_initialise(struct domain *
>> return rc;
>> }
>>
>>
On Mon, Jul 16, 2018 at 10:45:15AM -0600, Jan Beulich wrote:
> Signed-off-by: Jan Beulich
>
> --- a/xen/arch/x86/pv/domain.c
> +++ b/xen/arch/x86/pv/domain.c
> @@ -288,6 +288,12 @@ int pv_domain_initialise(struct domain *
> return rc;
> }
>
> +bool __init xpti_pcid_enabled(void)
> +{
> +
On 16/07/18 17:45, Jan Beulich wrote:
> --- a/xen/include/asm-x86/spec_ctrl.h
> +++ b/xen/include/asm-x86/spec_ctrl.h
> @@ -38,6 +38,8 @@ extern uint8_t opt_xpti;
> #define OPT_XPTI_DOM0 0x01
> #define OPT_XPTI_DOMU 0x02
>
> +bool xpti_pcid_enabled(void);
To be used in the way you want,
Signed-off-by: Jan Beulich
--- a/xen/arch/x86/pv/domain.c
+++ b/xen/arch/x86/pv/domain.c
@@ -288,6 +288,12 @@ int pv_domain_initialise(struct domain *
return rc;
}
+bool __init xpti_pcid_enabled(void)
+{
+return use_invpcid && cpu_has_pcid &&
+ (opt_pcid == PCID_ALL ||
