[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH 6/6] x86/msr: Blacklist various MSRs which guests definitely shouldn't be using
>>> On 26.02.18 at 18:35, <andrew.cooper3@xxxxxxxxxx> wrote: > @@ -183,6 +187,15 @@ int guest_rdmsr(const struct vcpu *v, uint32_t msr, > uint64_t *val) > ret = guest_rdmsr_x2apic(v, msr, val); > goto out; > > + case 0xc80: > + /* Silicon Debug Inferface not advertised to guests. */ > + goto gp_fault; > + > + case 0xc81 ... 0xc8f: /* Misc RDT MSRs. */ > + case 0xc90 ... 0xd8f: /* CAT Mask registers. */ At the very least where we already have #define-s you should use those. Even better would be if you also introduced #define-s for ones we don't handle anywhere yet, as Roger has also suggested. Furthermore, what makes you imply the entire c81..c8f range is RDT? And then - even calling them RDT / CAT is questionable - the same numbers have another use on the Xeon 7500 series as per the SDM. Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
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