AuxXxilium/linux_dsm_epyc7002
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x86: change x86_64 sanity checks to match i386.

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They are mostly inocuous. APIC_INTEGRATED will expand to 1,
check_phys_apicid_present is checking for the same thing it was before,
etc. But the code is identical to i386 now, and will allow us to
integrate it.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Glauber de Oliveira Costa 2008-03-19 14:26:09 -03:00 committed by Ingo Molnar
parent 0df1ba8cab
commit 771263d311
1 changed files with 7 additions and 3 deletions
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10
arch/x86/kernel/smpboot_64.c
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@ -50,6 +50,7 @@
#include <linux/smp.h>
#include <linux/kdebug.h>
#include <asm/acpi.h>
#include <asm/mtrr.h>
#include <asm/pgalloc.h>
#include <asm/desc.h>
@ -105,7 +106,7 @@ static int __init smp_sanity_check(unsigned max_cpus)
* If we couldn't find an SMP configuration at boot time,
* get out of here now!
*/
if (!smp_found_config) {
if (!smp_found_config && !acpi_lapic) {
printk(KERN_NOTICE "SMP motherboard not detected.\n");
disable_smp();
if (APIC_init_uniprocessor())
@ -118,7 +119,7 @@ static int __init smp_sanity_check(unsigned max_cpus)
* Should not be necessary because the MP table should list the boot
* CPU too, but we do it for the sake of robustness anyway.
*/
if (!physid_isset(boot_cpu_physical_apicid, phys_cpu_present_map)) {
if (!check_phys_apicid_present(boot_cpu_physical_apicid)) {
printk(KERN_NOTICE
"weird, boot CPU (#%d) not listed by the BIOS.\n",
boot_cpu_physical_apicid);
@ -128,7 +129,8 @@ static int __init smp_sanity_check(unsigned max_cpus)
/*
* If we couldn't find a local APIC, then get out of here now!
*/
if (!cpu_has_apic) {
if (APIC_INTEGRATED(apic_version[boot_cpu_physical_apicid]) &&
!cpu_has_apic) {
printk(KERN_ERR "BIOS bug, local APIC #%d not detected!...\n",
boot_cpu_physical_apicid);
printk(KERN_ERR "... forcing use of dummy APIC emulation. (tell your hw vendor)\n");
@ -136,6 +138,8 @@ static int __init smp_sanity_check(unsigned max_cpus)
return -1;
}
verify_local_APIC();
/*
* If SMP should be disabled, then really disable it!
*/