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[PARISC] fix PA1.1 oops on boot

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All PA1.1 systems have been oopsing on boot since

commit f311847c2f
Author: James Bottomley <James.Bottomley@HansenPartnership.com>
Date:   Wed Dec 22 10:22:11 2010 -0600

    parisc: flush pages through tmpalias space

because a PA2.0 instruction was accidentally introduced into the PA1.1 TLB
insertion interruption path when it was consolidated with the do_alias macro.
Fix the do_alias macro only to use PA2.0 instructions if compiled for 64 bit.
Cc: stable@vger.kernel.org  #2.6.39+
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
James Bottomley 2012-05-15 11:04:19 +01:00
parent 568b44559d
commit 5e185581d7
1 changed files with 4 additions and 0 deletions
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4
arch/parisc/kernel/entry.S
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@ -581,7 +581,11 @@
*/
cmpiclr,= 0x01,\tmp,%r0
ldi (_PAGE_DIRTY|_PAGE_READ|_PAGE_WRITE),\prot
#ifdef CONFIG_64BIT
depd,z \prot,8,7,\prot
#else
depw,z \prot,8,7,\prot
#endif
/*
* OK, it is in the temp alias region, check whether "from" or "to".
* Check "subtle" note in pacache.S re: r23/r26.