[PATCH 10/11] hw/intc/apic: Fixes magic number use, removes outdated comment

phil@philjordan.eu posted 11 patches 5 months ago
[PATCH 10/11] hw/intc/apic: Fixes magic number use, removes outdated comment
Posted by phil@philjordan.eu 5 months ago
From: Phil Dennis-Jordan <phil@philjordan.eu>

This changes replaces the use of an explicit literal constant for
the APIC base address mask with the existing symbolic constant
intended for this purpose.

Additionally, we remove the comment about not being able to
re-enable the APIC after disabling it. This is no longer
the case after the APIC implementation's state machine was
modified in 9.0.

Signed-off-by: Phil Dennis-Jordan <phil@philjordan.eu>
---
 hw/intc/apic.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/hw/intc/apic.c b/hw/intc/apic.c
index add99f01e5..d72cbb2a8f 100644
--- a/hw/intc/apic.c
+++ b/hw/intc/apic.c
@@ -350,9 +350,8 @@ static int apic_set_base(APICCommonState *s, uint64_t val)
         return -1;
     }
 
-    s->apicbase = (val & 0xfffff000) |
+    s->apicbase = (val & MSR_IA32_APICBASE_BASE) |
         (s->apicbase & (MSR_IA32_APICBASE_BSP | MSR_IA32_APICBASE_ENABLE));
-    /* if disabled, cannot be enabled again */
     if (!(val & MSR_IA32_APICBASE_ENABLE)) {
         s->apicbase &= ~MSR_IA32_APICBASE_ENABLE;
         cpu_clear_apic_feature(&s->cpu->env);
-- 
2.39.3 (Apple Git-146)
Re: [PATCH 10/11] hw/intc/apic: Fixes magic number use, removes outdated comment
Posted by Philippe Mathieu-Daudé 5 months ago
On 9/12/24 21:36, phil@philjordan.eu wrote:
> From: Phil Dennis-Jordan <phil@philjordan.eu>
> 
> This changes replaces the use of an explicit literal constant for
> the APIC base address mask with the existing symbolic constant
> intended for this purpose.
> 
> Additionally, we remove the comment about not being able to
> re-enable the APIC after disabling it. This is no longer
> the case after the APIC implementation's state machine was
> modified in 9.0.
> 
> Signed-off-by: Phil Dennis-Jordan <phil@philjordan.eu>
> ---
>   hw/intc/apic.c | 3 +--
>   1 file changed, 1 insertion(+), 2 deletions(-)

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>