[PATCH v2 06/25] powerpc32: iounmap() cannot vunmap() area mapped by TLBCAMs either
From: Christophe Leroy <hidden>
Date: 2015-09-22 16:50:45
Also in:
lkml
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Linus Torvalds
iounmap() cannot vunmap() area mapped by TLBCAMs either Signed-off-by: Christophe Leroy <redacted> --- No change in v2 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));
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2.1.0