powerpc fixes for 5.12 #5

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Fix a bug on pseries where spurious wakeups from H_PROD would prevent partition migration
 from succeeding.
 
 Fix oopses seen in pcpu_alloc(), caused by parallel faults of the percpu mapping causing
 us to corrupt the protection key used for the mapping, and cause a fatal key fault.
 
 Thanks to Aneesh Kumar K.V, Murilo Opsfelder Araujo, Nathan Lynch.
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Merge tag 'powerpc-5.12-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "Fix a bug on pseries where spurious wakeups from H_PROD would prevent
  partition migration from succeeding.

  Fix oopses seen in pcpu_alloc(), caused by parallel faults of the
  percpu mapping causing us to corrupt the protection key used for the
  mapping, and cause a fatal key fault.

  Thanks to Aneesh Kumar K.V, Murilo Opsfelder Araujo, and Nathan Lynch"

* tag 'powerpc-5.12-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/mm/book3s64: Use the correct storage key value when calling H_PROTECT
  powerpc/pseries/mobility: handle premature return from H_JOIN
  powerpc/pseries/mobility: use struct for shared state

...

This commit is contained in:

Linus Torvalds 2021-04-03 10:49:38 -07:00

parent fa16199500 53f1d31708

commit 9c2ef23e4d

2 changed files with 46 additions and 5 deletions

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3

arch/powerpc/platforms/pseries/lpar.c

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48

arch/powerpc/platforms/pseries/mobility.c

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