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[PULL,08/32] hw/intc/apic: Fixes magic number use, removes outdated comment

Message ID 20250210204204.54407-9-philmd@linaro.org
State New
Headers show
Series [PULL,01/32] backends/tpm: Use qemu_hexdump_line() to avoid sprintf() | expand

Commit Message

Philippe Mathieu-Daudé Feb. 10, 2025, 8:41 p.m. UTC 
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>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20241209203629.74436-11-phil@philjordan.eu>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 hw/intc/apic.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
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Patch

diff --git a/hw/intc/apic.c b/hw/intc/apic.c
index d1d343d4216..d18c1dbf2cb 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);