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powerpc fixes for 6.12 #4

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- Fix crash in memcpy on 8xx due to dcbz workaround since recent changes.
 
 Thanks to: Christophe Leroy.
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Merge tag 'powerpc-6.12-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fix from Michael Ellerman:

 - Fix crash in memcpy on 8xx due to dcbz workaround since recent
   changes

Thanks to Christophe Leroy.

* tag 'powerpc-6.12-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/8xx: Fix kernel DTLB miss on dcbz
This commit is contained in:
Linus Torvalds 2024-10-12 17:16:21 -07:00
commit 36c254515d
1 changed files with 1 additions and 0 deletions
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arch/powerpc/kernel/head_8xx.S
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@ -494,6 +494,7 @@ FixupDAR:/* Entry point for dcbx workaround. */
bctr /* jump into table */
152:
mfdar r11
mtdar r10
mtctr r11 /* restore ctr reg from DAR */
mfspr r11, SPRN_SPRG_THREAD
stw r10, DAR(r11)