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MFi386: wait for local apic to become free before using it

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This commit is contained in:
Peter Wemm 2004-03-08 00:15:29 +00:00
parent 1164db57e4
commit c60df69fb2
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=126731
1 changed files with 2 additions and 4 deletions
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6
sys/amd64/amd64/local_apic.c
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@ -691,8 +691,8 @@ lapic_ipi_raw(register_t icrlo, u_int dest)
intr_restore(eflags);
}
#ifdef DETECT_DEADLOCK
#define BEFORE_SPIN 1000000
#ifdef DETECT_DEADLOCK
#define AFTER_SPIN 1000
#endif
@ -723,11 +723,9 @@ lapic_ipi_vectored(u_int vector, int dest)
destfield = dest;
}
#ifdef DETECT_DEADLOCK
/* Check for an earlier stuck IPI. */
/* Wait for an earlier IPI to finish. */
if (!lapic_ipi_wait(BEFORE_SPIN))
panic("APIC: Previous IPI is stuck");
#endif
lapic_ipi_raw(icrlo, destfield);