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(parent: 39a37ce) | patch
x86/gart: Disable GART explicitly before initialization
authorJoerg Roedel <joerg.roedel@amd.com>
Wed, 7 Apr 2010 10:57:35 +0000 (12:57 +0200)
committerJoerg Roedel <joerg.roedel@amd.com>
Wed, 7 Apr 2010 12:36:30 +0000 (14:36 +0200)
commit4b83873d3da0704987cb116833818ed96214ee29
tree49ae6049ff73abdb9c11c1c46ef40b634f3deb62tree | snapshot
parent39a37ce1cc5eef420604fa68b776ff5dab400340commit | diff
x86/gart: Disable GART explicitly before initialization

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>
arch/x86/kernel/aperture_64.c diff | blob | history
arch/x86/kernel/pci-gart_64.c diff | blob | history
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