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Date: Wed, 12 Aug 2015 15:41:04 +0200 (CEST) From: Christophe Leroy <christophe.leroy@....fr> To: Benjamin Herrenschmidt <benh@...nel.crashing.org>, Paul Mackerras <paulus@...ba.org>, Michael Ellerman <mpe@...erman.id.au>, scottwood@...escale.com Cc: linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org, Joakim Tjernlund <joakim.tjernlund@...nsmode.se> Subject: [PATCH 06/20] powerpc32: iounmap() cannot vunmap() area mapped by TLBCAMs either iounmap() cannot vunmap() area mapped by TLBCAMs either Signed-off-by: Christophe Leroy <christophe.leroy@....fr> --- arch/powerpc/mm/pgtable_32.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c index 7692d1b..03a073a 100644 --- a/arch/powerpc/mm/pgtable_32.c +++ b/arch/powerpc/mm/pgtable_32.c @@ -278,7 +278,9 @@ void iounmap(volatile void __iomem *addr) * If mapped by BATs then there is nothing to do. * Calling vfree() generates a benign warning. */ - if (v_mapped_by_bats((unsigned long)addr)) return; + if (v_mapped_by_bats((unsigned long)addr) || + v_mapped_by_tlbcam((unsigned long)addr)) + return; if (addr > high_memory && (unsigned long) addr < ioremap_bot) vunmap((void *) (PAGE_MASK & (unsigned long)addr)); -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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