[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [PATCH v7 01/10] lib/x86: Bump max basic leaf in {pv,hvm}_max_policy
Bump it to ARRAY_SIZE() so toolstack is able to extend a policy past host limits (i.e: to emulate a feature not present in the host) Signed-off-by: Alejandro Vallejo <alejandro.vallejo@xxxxxxxxx> --- v7: * Replaces v6/patch1("Relax checks about policy compatibility") * Bumps basic.max_leaf to ARRAY_SIZE(basic.raw) to pass the compatibility checks rather than tweaking the checker. --- xen/arch/x86/cpu-policy.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/xen/arch/x86/cpu-policy.c b/xen/arch/x86/cpu-policy.c index b6d9fad56773..715a66d2a978 100644 --- a/xen/arch/x86/cpu-policy.c +++ b/xen/arch/x86/cpu-policy.c @@ -585,6 +585,9 @@ static void __init calculate_pv_max_policy(void) */ p->feat.max_subleaf = ARRAY_SIZE(p->feat.raw) - 1; + /* Toolstack may populate leaves not present in the basic host leaves */ + p->basic.max_leaf = ARRAY_SIZE(p->basic.raw) - 1; + x86_cpu_policy_to_featureset(p, fs); for ( i = 0; i < ARRAY_SIZE(fs); ++i ) @@ -672,6 +675,9 @@ static void __init calculate_hvm_max_policy(void) */ p->feat.max_subleaf = ARRAY_SIZE(p->feat.raw) - 1; + /* Toolstack may populate leaves not present in the basic host leaves */ + p->basic.max_leaf = ARRAY_SIZE(p->basic.raw) - 1; + x86_cpu_policy_to_featureset(p, fs); mask = hvm_hap_supported() ? -- 2.47.0
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