[PATCH 8/10] powerpc/pci: Fix unmapping of IO space on 64-bit
Benjamin Herrenschmidt
benh at kernel.crashing.org
Tue Oct 28 16:48:47 EST 2008
A typo/thinko made us pass the wrong argument to __flush_hash_table_range
when unplugging bridges, thus not flushing all the translations for
the IO space on unplug.
This causes the hypervisor to refuse unplugging slots.
Signed-off-by: Benjamin Herrenschmidt <benh at kernel.crashing.org>
---
arch/powerpc/kernel/pci_64.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- linux-work.orig/arch/powerpc/kernel/pci_64.c 2008-10-28 16:33:48.000000000 +1100
+++ linux-work/arch/powerpc/kernel/pci_64.c 2008-10-28 16:38:45.000000000 +1100
@@ -426,7 +426,7 @@ int pcibios_unmap_io_space(struct pci_bu
pci_name(bus->self));
__flush_hash_table_range(&init_mm, res->start + _IO_BASE,
- res->end - res->start + 1);
+ res->end + _IO_BASE + 1);
return 0;
}
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