Author: nwhitehorn
Date: Sun Dec 31 05:38:19 2017
New Revision: 327417
URL: https://svnweb.freebsd.org/changeset/base/327417
Log:
Make sure the first instruction of the low-memory spinloop is in the
cacheline being invalidated.
MFC after: 1 month
Modified:
head/sys/powerpc/aim/locore64.S
Modified: head/sys/powerpc/aim/locore64.S
==============================================================================
--- head/sys/powerpc/aim/locore64.S Sun Dec 31 05:22:26 2017
(r327416)
+++ head/sys/powerpc/aim/locore64.S Sun Dec 31 05:38:19 2017
(r327417)
@@ -85,8 +85,9 @@ ap_kexec_start: /* At 0x60 past start, copied
to 0x60
sync
icbi 0,%r0
isync
- ba 0x78 /* Absolute branch to next inst */
+ ba 0x80 /* Absolute branch to next inst */
+. = kbootentry + 0x80 /* Aligned to cache line */
1: or 31,31,31 /* yield */
sync
lwz %r1,0x40(0) /* Spin on ap_kexec_spin_sem */
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