Commit e9c837c6 authored Nov 02, 2019 by John David Anglin Committed by Helge Deller Nov 04, 2019

parisc: Avoid spurious inequivalent alias kernel error messages

This patch changes flush_dcache_page() to only print inequivalent alias error
messages on systems that require coherency. Inequivalent aliases can occur on
systems that don't require coherency and this can cause spurious messages.

Signed-off-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Helge Deller <deller@gmx.de>

parent f973cce0

arch/parisc/kernel/cache.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -365,7 +365,7 @@ void flush_dcache_page(struct page *page)
		if (old_addr == 0 \|\| (old_addr & (SHM_COLOUR - 1))
		!= (addr & (SHM_COLOUR - 1))) {
		__flush_cache_page(mpnt, addr, page_to_phys(page));
		if (old_addr)
		if (parisc_requires_coherency() && old_addr)
		printk(KERN_ERR "INEQUIVALENT ALIASES 0x%lx and 0x%lx in file %pD\n", old_addr, addr, mpnt->vm_file);
		old_addr = addr;
		}

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