x86/gart: Disable GART explicitly before initialization

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If we boot into a crash-kernel the gart might still be
enabled and its caches might be dirty. This can result in
undefined behavior later. Fix it by explicitly disabling the
gart hardware before initialization and flushing the caches
after enablement.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>

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This commit is contained in:

Joerg Roedel 2010-04-07 12:57:35 +02:00

parent 39a37ce1cc

commit 4b83873d3d

2 changed files with 17 additions and 1 deletions

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15

arch/x86/kernel/aperture_64.c

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3

arch/x86/kernel/pci-gart_64.c

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