Christophe Leroy b1b93cb7e7 powerpc/nohash: Fix __ptep_set_access_flags() and ptep_set_wrprotect() ... Commit 26973fa5ac ("powerpc/mm: use pte helpers in generic code") changed those two functions to use pte helpers to determine which bits to clear and which bits to set. This change was based on the assumption that bits to be set/cleared are always the same and can be determined by applying the pte manipulation helpers on __pte(0). But on platforms like book3e, the bits depend on whether the page is a user page or not. For the time being it more or less works because of _PAGE_EXEC being used for user pages only and exec right being set at all time on kernel page. But following patch will clean that and output of pte_mkexec() will depend on the page being a user or kernel page. Instead of trying to make an even more complicated helper where bits would become dependent on the final pte value, come back to a more static situation like before commit 26973fa5ac ("powerpc/mm: use pte helpers in generic code"), by introducing an 8xx specific version of __ptep_set_access_flags() and ptep_set_wrprotect(). Fixes: 26973fa5ac ("powerpc/mm: use pte helpers in generic code") Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/922bdab3a220781bae2360ff3dd5adb7fe4d34f1.1635226743.git.christophe.leroy@csgroup.eu		2021-10-28 00:41:28 +11:00
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asm	powerpc/nohash: Fix __ptep_set_access_flags() and ptep_set_wrprotect()	2021-10-28 00:41:28 +11:00
uapi/asm	powerpc/perf: Expose instruction and data address registers as part of extended regs	2021-10-12 18:39:02 +11:00