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#include "private.h"
#include <xen/lib/x86/cpu-policy.h>
int x86_cpu_policies_are_compatible(const struct cpu_policy *host,
const struct cpu_policy *guest,
struct cpu_policy_errors *err)
{
struct cpu_policy_errors e = INIT_CPU_POLICY_ERRORS;
int ret = -EINVAL;
#define NA XEN_CPUID_NO_SUBLEAF
#define FAIL_CPUID(l, s) \
do { e.leaf = (l); e.subleaf = (s); goto out; } while ( 0 )
#define FAIL_MSR(m) \
do { e.msr = (m); goto out; } while ( 0 )
if ( guest->basic.max_leaf > host->basic.max_leaf )
FAIL_CPUID(0, NA);
if ( guest->feat.max_subleaf > host->feat.max_subleaf )
FAIL_CPUID(7, 0);
if ( guest->extd.max_leaf > host->extd.max_leaf )
FAIL_CPUID(0x80000000, NA);
/* TODO: Audit more CPUID data. */
if ( ~host->platform_info.raw & guest->platform_info.raw )
FAIL_MSR(MSR_INTEL_PLATFORM_INFO);
#undef FAIL_MSR
#undef FAIL_CPUID
#undef NA
/* Success. */
ret = 0;
out:
if ( err )
*err = e;
return ret;
}
/*
* Local variables:
* mode: C
* c-file-style: "BSD"
* c-basic-offset: 4
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/
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