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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-30 03:35:38 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-30 03:35:38 +0000 |
| commit | 4f8f1553146401921349e8e78962dff48cde846a (patch) | |
| tree | bf5ef5abdf1ca1370eb3947d70a2c176b6b69edd /arch/x86 | |
| parent | Adding upstream version 6.8.9. (diff) | |
| download | linux-4f8f1553146401921349e8e78962dff48cde846a.tar.xz linux-4f8f1553146401921349e8e78962dff48cde846a.zip | |
Adding upstream version 6.8.11.upstream/6.8.11
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kernel/apic/apic.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index 75bd5ac7a..a04a5163e 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -1808,7 +1808,7 @@ void x2apic_setup(void) __x2apic_enable(); } -static __init void apic_set_fixmap(void); +static __init void apic_set_fixmap(bool read_apic); static __init void x2apic_disable(void) { @@ -1830,7 +1830,12 @@ static __init void x2apic_disable(void) } __x2apic_disable(); - apic_set_fixmap(); + /* + * Don't reread the APIC ID as it was already done from + * check_x2apic() and the APIC driver still is a x2APIC variant, + * which fails to do the read after x2APIC was disabled. + */ + apic_set_fixmap(false); } static __init void x2apic_enable(void) @@ -2095,13 +2100,14 @@ void __init init_apic_mappings(void) } } -static __init void apic_set_fixmap(void) +static __init void apic_set_fixmap(bool read_apic) { set_fixmap_nocache(FIX_APIC_BASE, mp_lapic_addr); apic_mmio_base = APIC_BASE; apic_printk(APIC_VERBOSE, "mapped APIC to %16lx (%16lx)\n", apic_mmio_base, mp_lapic_addr); - apic_read_boot_cpu_id(false); + if (read_apic) + apic_read_boot_cpu_id(false); } void __init register_lapic_address(unsigned long address) @@ -2111,7 +2117,7 @@ void __init register_lapic_address(unsigned long address) mp_lapic_addr = address; if (!x2apic_mode) - apic_set_fixmap(); + apic_set_fixmap(true); } /* |