[PATCH] x86-64: Don't allocate aperture when swiotlb is enabled and no AGP found

No-one needs it then

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/arch/x86_64/kernel/aperture.c b/arch/x86_64/kernel/aperture.c
index c9a6b812e926cf3f5c79493433cda35b5c9c7e3b..962ad4823b6a567d4f340bca8d101a2e958dfbd2 100644 (file)
--- a/arch/x86_64/kernel/aperture.c
+++ b/arch/x86_64/kernel/aperture.c
@@ -245,6 +245,8 @@ void __init iommu_hole_init(void)
                
        if (aper_alloc) { 
                /* Got the aperture from the AGP bridge */
+       } else if (swiotlb && !valid_agp) {
+               /* Do nothing */
        } else if ((!no_iommu && end_pfn >= 0xffffffff>>PAGE_SHIFT) ||
                   force_iommu ||
                   valid_agp ||