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Gentoo's Bugzilla – Attachment 103272 Details for
Bug 126571
bug in kernel: amd64-agp fails to configure agp-bridge
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[patch]
At last a patch for this *** BIOS design flaw ;-)
aperture_fix.patch (text/plain), 685 bytes, created by
Sebastian Volke
on 2006-12-03 08:04:54 UTC
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Description:
At last a patch for this *** BIOS design flaw ;-)
Filename:
MIME Type:
Creator:
Sebastian Volke
Created:
2006-12-03 08:04:54 UTC
Size:
685 bytes
patch
obsolete
>diff -ru linux-2.6.18-gentoo-r3/arch/x86_64/kernel/aperture.c linux-2.6.18-seb/arch/x86_64/kernel/aperture.c >--- linux-2.6.18-gentoo-r3/arch/x86_64/kernel/aperture.c 2006-11-23 13:35:27.000000000 +0100 >+++ linux-2.6.18-seb/arch/x86_64/kernel/aperture.c 2006-11-25 11:02:33.000000000 +0100 >@@ -208,6 +208,15 @@ > if (!early_is_k8_nb(read_pci_config(0, num, 3, 0x00))) > continue; > >+ >+ /* workaround buggy ASROCK BIOS, see bug #6350 */ >+ aper_size = read_pci_config(0, num, 3, 0x94); >+ if (aper_size >= 0x80) { >+ aper_size &= 0x7F; //cut every byte beyond the 4G border >+ write_pci_config(0, num, 3, 0x94, aper_size); >+ } >+ >+ > iommu_detected = 1; > iommu_aperture = 1; >
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bug 126571
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