Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge tag 'powerpc-5.0-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fix from Michael Ellerman:
"Just one fix, for pgd/pud_present() which were broken on big endian
since v4.20, leading to possible data corruption.
Thanks to: Aneesh Kumar K.V., Erhard F., Jan Kara"
* tag 'powerpc-5.0-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/64s: Fix possible corruption on big endian due to pgd/pud_present()
+2
-2
+2
-2
arch/powerpc/include/asm/book3s/64/pgtable.h
+2
-2
arch/powerpc/include/asm/book3s/64/pgtable.h
···
904
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static inline int pud_present(pud_t pud)
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{
907
-
return (pud_raw(pud) & cpu_to_be64(_PAGE_PRESENT));
907
+
return !!(pud_raw(pud) & cpu_to_be64(_PAGE_PRESENT));
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}
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extern struct page *pud_page(pud_t pud);
···
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static inline int pgd_present(pgd_t pgd)
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{
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-
return (pgd_raw(pgd) & cpu_to_be64(_PAGE_PRESENT));
954
+
return !!(pgd_raw(pgd) & cpu_to_be64(_PAGE_PRESENT));
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}
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static inline pte_t pgd_pte(pgd_t pgd)