AuxXxilium/linux_dsm_epyc7002
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x86: use APIC_INTEGRATED tests in x86_64

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This patch does not change the behaviour of x86_64, since APIC_INTEGRATED
is always defined as (1). But the code now matches exactly i386 version
(well, this part of the code, at least)

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 14:25:11 -03:00 committed by Ingo Molnar
parent ac56ef61a1
commit 148a30f8cf
1 changed files with 13 additions and 1 deletions
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14
arch/x86/kernel/smpboot_64.c
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@ -295,6 +295,15 @@ static int __cpuinit wakeup_secondary_via_INIT(int phys_apicid, unsigned int sta
unsigned long send_status, accept_status = 0;
int maxlvt, num_starts, j;
/*
* Be paranoid about clearing APIC errors.
*/
if (APIC_INTEGRATED(apic_version[phys_apicid])) {
apic_read_around(APIC_SPIV);
apic_write(APIC_ESR, 0);
apic_read(APIC_ESR);
}
Dprintk("Asserting INIT.\n");
/*
@ -327,7 +336,10 @@ static int __cpuinit wakeup_secondary_via_INIT(int phys_apicid, unsigned int sta
mb();
atomic_set(&init_deasserted, 1);
num_starts = 2;
if (APIC_INTEGRATED(apic_version[phys_apicid]))
num_starts = 2;
else
num_starts = 0;
/*
* Paravirt / VMI wants a startup IPI hook here to set up the