Commit d6c77973 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'parisc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/parisc-2.6 

Pull PA-RISC fixes from James Bottomley:
 "This is a set of three bug fixes that gets parisc running again on
  systems with PA1.1 processors.

  Two fix regressions introduced in 2.6.39 and one fixes a prefetch bug
  that only affects PA7300LC processors.  We also have another pending
  fix to do with the sectional arrangement of vmlinux.lds, but there's a
  query on it during testing on one particular system type, so I'll hold
  off sending it in for now."

* tag 'parisc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/parisc-2.6:
  [PARISC] fix panic on prefetch(NULL) on PA7300LC
  [PARISC] fix crash in flush_icache_page_asm on PA1.1
  [PARISC] fix PA1.1 oops on boot
parents 5d120458 b3cb8674

arch/parisc/include/asm/prefetch.h

+6 −1
Original line number Diff line number Diff line
@@ -21,7 +21,12 @@ 
#define ARCH_HAS_PREFETCH

static inline void prefetch(const void *addr)

{

	__asm__("ldw 0(%0), %%r0" : : "r" (addr));

	__asm__(

#ifndef CONFIG_PA20

		/* Need to avoid prefetch of NULL on PA7300LC */

		"	extrw,u,= %0,31,32,%%r0\n"

#endif

		"	ldw 0(%0), %%r0" : : "r" (addr));

}



/* LDD is a PA2.0 addition. */

arch/parisc/kernel/entry.S

+4 −0
Original line number Diff line number Diff line
@@ -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.

arch/parisc/kernel/pacache.S

+20 −18
Original line number Diff line number Diff line
@@ -692,7 +692,7 @@ ENTRY(flush_icache_page_asm) 


	/* Purge any old translation */



	pitlb		(%sr0,%r28)

	pitlb		(%sr4,%r28)



	ldil		L%icache_stride, %r1

	ldw		R%icache_stride(%r1), %r1
@@ -706,27 +706,29 @@ ENTRY(flush_icache_page_asm) 
	sub		%r25, %r1, %r25





1:      fic,m		%r1(%r28)

	fic,m		%r1(%r28)

	fic,m		%r1(%r28)

	fic,m		%r1(%r28)

	fic,m		%r1(%r28)

	fic,m		%r1(%r28)

	fic,m		%r1(%r28)

	fic,m		%r1(%r28)

	fic,m		%r1(%r28)

	fic,m		%r1(%r28)

	fic,m		%r1(%r28)

	fic,m		%r1(%r28)

	fic,m		%r1(%r28)

	fic,m		%r1(%r28)

	fic,m		%r1(%r28)

	/* fic only has the type 26 form on PA1.1, requiring an

	 * explicit space specification, so use %sr4 */

1:      fic,m		%r1(%sr4,%r28)

	fic,m		%r1(%sr4,%r28)

	fic,m		%r1(%sr4,%r28)

	fic,m		%r1(%sr4,%r28)

	fic,m		%r1(%sr4,%r28)

	fic,m		%r1(%sr4,%r28)

	fic,m		%r1(%sr4,%r28)

	fic,m		%r1(%sr4,%r28)

	fic,m		%r1(%sr4,%r28)

	fic,m		%r1(%sr4,%r28)

	fic,m		%r1(%sr4,%r28)

	fic,m		%r1(%sr4,%r28)

	fic,m		%r1(%sr4,%r28)

	fic,m		%r1(%sr4,%r28)

	fic,m		%r1(%sr4,%r28)

	cmpb,COND(<<)		%r28, %r25,1b

	fic,m		%r1(%r28)

	fic,m		%r1(%sr4,%r28)



	sync

	bv		%r0(%r2)

	pitlb		(%sr0,%r25)

	pitlb		(%sr4,%r25)

	.exit



	.procend

CRA Git | Maintained and supported by SUSTech CRA and CCSE