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[PATCH 1/8] x86/cpu-policy: move invocation of recalculate_misc()
- To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Tue, 18 Nov 2025 16:05:41 +0100
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Teddy Astie <teddy.astie@xxxxxxxxxx>
- Delivery-date: Tue, 18 Nov 2025 15:05:45 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
The function is about guest exposure of features / leaves. There's no need
for it to be applied on the host policy. In fact doing so gets in the way
of using the host policy in certain places.
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
--- a/xen/arch/x86/cpu-policy.c
+++ b/xen/arch/x86/cpu-policy.c
@@ -383,7 +383,6 @@ static void __init calculate_host_policy
x86_cpu_featureset_to_policy(boot_cpu_data.x86_capability, p);
recalculate_xstate(p);
- recalculate_misc(p);
/* When vPMU is disabled, drop it from the host policy. */
if ( vpmu_mode == XENPMU_MODE_OFF )
@@ -634,6 +633,7 @@ static void __init calculate_pv_max_poli
unsigned int i;
*p = host_cpu_policy;
+ recalculate_misc(p);
guest_common_max_leaves(p);
@@ -736,6 +736,7 @@ static void __init calculate_hvm_max_pol
const uint32_t *mask;
*p = host_cpu_policy;
+ recalculate_misc(p);
guest_common_max_leaves(p);
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