powerpc: Remove unused 'protect4gb' boot parameter
authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Sun, 9 May 2010 17:39:05 +0000 (17:39 +0000)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Fri, 21 May 2010 07:31:13 +0000 (17:31 +1000)
commit99ec28f183daa450faa7bdad6f932364ae325648
tree4fd2d505dd71412f2fc630ac700fc9a7348aaaab
parent40a5a4435f37b172dec09852ad2036865f9ca3c8
powerpc: Remove unused 'protect4gb' boot parameter

'protect4gb' boot parameter was introduced to avoid allocating dma
space acrossing 4GB boundary in 2007 (the commit
569975591c5530fdc9c7a3c45122e5e46f075a74).

In 2008, the IOMMU was fixed to use the boundary_mask parameter per
device properly. So 'protect4gb' workaround was removed (the
383af9525bb27f927511874f6306247ec13f1c28). But somehow I messed the
'protect4gb' boot parameter that was used to enable the
workaround.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
arch/powerpc/kernel/iommu.c