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authorBorislav Petkov <borislav.petkov@amd.com>2010-09-03 18:39:40 +0200
committerIngo Molnar <mingo@elte.hu>2010-09-05 14:28:34 +0200
commit260133ab658bd2b80e07832a878e00405e19ff43 (patch)
treec48b062b77416348c268f80df7c294f35f35588f /arch/x86/kernel/pci-gart_64.c
parent57ab43e33122ffdc2eebca5d6de035699f0a8c06 (diff)
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x86, GART: Disable GART table walk probes
Current code tramples over bit F3x90[6] which can be used to disable GART table walk probes. However, this bit should be set for performance reasons (speed up GART table walks). We are allowed to do that since we put GART tables in UC memory later anyway. Make it so. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com> Cc: Dave Airlie <airlied@redhat.com> Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> LKML-Reference: <1283531981-7495-3-git-send-email-bp@amd64.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/pci-gart_64.c')
-rw-r--r--arch/x86/kernel/pci-gart_64.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
index 0f7f130caa6..6015ee13e22 100644
--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -601,7 +601,7 @@ static void gart_fixup_northbridges(struct sys_device *dev)
* Don't enable translations just yet. That is the next
* step. Restore the pre-suspend aperture settings.
*/
- pci_write_config_dword(dev, AMD64_GARTAPERTURECTL, aperture_order << 1);
+ gart_set_size_and_enable(dev, aperture_order);
pci_write_config_dword(dev, AMD64_GARTAPERTUREBASE, aperture_alloc >> 25);
}
}