Author: jhibbits
Date: Tue Nov 19 01:28:06 2019
New Revision: 354838
URL: https://svnweb.freebsd.org/changeset/base/354838
Log:
powerpc/booke pmap: Use the right 'tlbilx' form to invalidate TIDs
'tlbilxpid' is 'tlbilx 1, 0', while the existing form is 'tlbilx 0, 0',
which translates to 'tlbilxlpid', invalidating a LDPID. This effectively
invalidates the entire TLB, causing unnecessary reloads.
Modified:
head/sys/powerpc/booke/pmap.c
Modified: head/sys/powerpc/booke/pmap.c
==============================================================================
--- head/sys/powerpc/booke/pmap.c Tue Nov 19 00:02:56 2019
(r354837)
+++ head/sys/powerpc/booke/pmap.c Tue Nov 19 01:28:06 2019
(r354838)
@@ -4254,7 +4254,7 @@ tid_flush(tlbtid_t tid)
case FSL_E6500:
mtspr(SPR_MAS6, tid << MAS6_SPID0_SHIFT);
/* tlbilxpid */
- __asm __volatile("isync; .long 0x7c000024; isync; msync");
+ __asm __volatile("isync; .long 0x7c200024; isync; msync");
__asm __volatile("wrtee %0" :: "r"(msr));
return;
}
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