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powerpc/mm: drop platform defined pmd_mknotpresent()

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Patch series "mm/thp: Rename pmd_mknotpresent() as pmd_mknotvalid()", v2.

This series renames pmd_mknotpresent() as pmd_mknotvalid().  Before that
it drops an existing pmd_mknotpresent() definition from powerpc platform
which was never required as it defines it's pmdp_invalidate() through
subscribing __HAVE_ARCH_PMDP_INVALIDATE.  This does not create any
functional change.

This rename was suggested by Catalin during a previous discussion while we
were trying to change the THP helpers on arm64 platform for migration.

https://patchwork.kernel.org/patch/11019637/

This patch (of 2):

Platform needs to define pmd_mknotpresent() for generic pmdp_invalidate()
only when __HAVE_ARCH_PMDP_INVALIDATE is not subscribed.  Otherwise
platform specific pmd_mknotpresent() is not required.  Hence just drop it.

Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1587520326-10099-1-git-send-email-anshuman.khandual@arm.com
Link: http://lkml.kernel.org/r/1584680057-13753-1-git-send-email-anshuman.khandual@arm.com
Link: http://lkml.kernel.org/r/1584680057-13753-2-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Anshuman Khandual 2020-06-03 16:03:41 -07:00 committed by Linus Torvalds
parent 67e4eb0768
commit 124cb3a62d
1 changed files with 0 additions and 4 deletions
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4
arch/powerpc/include/asm/book3s/64/pgtable.h
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@ -1168,10 +1168,6 @@ static inline int pmd_large(pmd_t pmd)
return !!(pmd_raw(pmd) & cpu_to_be64(_PAGE_PTE));
}
static inline pmd_t pmd_mknotpresent(pmd_t pmd)
{
return __pmd(pmd_val(pmd) & ~_PAGE_PRESENT);
}
/*
* For radix we should always find H_PAGE_HASHPTE zero. Hence
* the below will work for radix too