Messages in this thread |  | | Subject | Re: [PATCH v4 2/5] KVM: X86: Expose PKS to guest | From | Paolo Bonzini <> | Date | Fri, 5 Feb 2021 10:25:48 +0100 |
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On 05/02/21 09:37, Chenyi Qiang wrote: > > diff --git a/arch/x86/mm/pkeys.c b/arch/x86/mm/pkeys.c > index 57718716cc70..8027f854c600 100644 > --- a/arch/x86/mm/pkeys.c > +++ b/arch/x86/mm/pkeys.c > @@ -390,3 +390,9 @@ void pks_key_free(int pkey) > __clear_bit(pkey, &pks_key_allocation_map); > } > EXPORT_SYMBOL_GPL(pks_key_free); > + > +u32 get_current_pkrs(void) > +{ > + return this_cpu_read(pkrs_cache); > +} > +EXPORT_SYMBOL_GPL(get_current_pkrs); > diff --git a/include/linux/pkeys.h b/include/linux/pkeys.h > index bed0e293f13b..480429020f4c 100644 > --- a/include/linux/pkeys.h > +++ b/include/linux/pkeys.h > @@ -72,6 +72,10 @@ static inline void pks_mk_readwrite(int pkey) > { > pr_err("%s is not valid without PKS support\n", __func__); > } > +static inline u32 get_current_pkrs(void) > +{ > + return 0; > +} > #endif /* ! CONFIG_ARCH_HAS_SUPERVISOR_PKEYS */ >
This would need an ack from the x86 people. Andy, Boris?
Paolo
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