| Message ID | 20210709043713.887098-2-senozhatsky@chromium.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | arm64:kvm: teach guest sched that VCPUs can be preempted | expand |
On Fri, 09 Jul 2021 05:37:10 +0100, Sergey Senozhatsky <senozhatsky@chromium.org> wrote: > > Add the definitions of the SMCCC functions that will be > used to paravirt VCPU state configuration. > > Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org> > --- > include/linux/arm-smccc.h | 18 ++++++++++++++++++ > 1 file changed, 18 insertions(+) > > diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h > index 7d1cabe15262..dbf0d658e54a 100644 > --- a/include/linux/arm-smccc.h > +++ b/include/linux/arm-smccc.h > @@ -177,6 +177,24 @@ > ARM_SMCCC_OWNER_STANDARD, \ > 0x53) > > +#define ARM_SMCCC_HV_PV_VCPU_STATE_FEATURES \ > + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ > + ARM_SMCCC_SMC_64, \ > + ARM_SMCCC_OWNER_STANDARD_HYP, \ > + 0x60) > + > +#define ARM_SMCCC_HV_PV_VCPU_STATE_INIT \ > + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ > + ARM_SMCCC_SMC_64, \ > + ARM_SMCCC_OWNER_STANDARD_HYP, \ > + 0x61) > + > +#define ARM_SMCCC_HV_PV_VCPU_STATE_RELEASE \ > + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ > + ARM_SMCCC_SMC_64, \ > + ARM_SMCCC_OWNER_STANDARD_HYP, \ > + 0x62) > + This is definitely the *wrong* namespace for this. The "STANDARD_HYP" space is owned by ARM for hypercalls that are implementable by any hypervisors, and for which there is an ARM-owned specification. Unless you plan to get this adopted as an ARM spec (pretty doubtful), this should go instead in the KVM-specific space, which currently has a single user (the PTP stuff), although I plan to add a couple more shortly. M.
diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h index 7d1cabe15262..dbf0d658e54a 100644 --- a/include/linux/arm-smccc.h +++ b/include/linux/arm-smccc.h @@ -177,6 +177,24 @@ ARM_SMCCC_OWNER_STANDARD, \ 0x53) +#define ARM_SMCCC_HV_PV_VCPU_STATE_FEATURES \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_64, \ + ARM_SMCCC_OWNER_STANDARD_HYP, \ + 0x60) + +#define ARM_SMCCC_HV_PV_VCPU_STATE_INIT \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_64, \ + ARM_SMCCC_OWNER_STANDARD_HYP, \ + 0x61) + +#define ARM_SMCCC_HV_PV_VCPU_STATE_RELEASE \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_64, \ + ARM_SMCCC_OWNER_STANDARD_HYP, \ + 0x62) + /* * Return codes defined in ARM DEN 0070A * ARM DEN 0070A is now merged/consolidated into ARM DEN 0028 C
Add the definitions of the SMCCC functions that will be used to paravirt VCPU state configuration. Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org> --- include/linux/arm-smccc.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)