summaryrefslogtreecommitdiffstats
path: root/arch/x86/kernel/apic.c
diff options
context:
space:
mode:
authorJoerg Roedel <joerg.roedel@amd.com>2008-12-02 20:16:03 +0100
committerIngo Molnar <mingo@elte.hu>2008-12-03 10:02:41 +0100
commit70d7d357578245f1993fd2d3ccd26088bcd38941 (patch)
treea0fe9f283dfc802dcaf8dec9bacf7a4cce43d466 /arch/x86/kernel/apic.c
parent7b1dedca42ac0d0d0be01e39d8461bb53a2389b3 (diff)
downloadop-kernel-dev-70d7d357578245f1993fd2d3ccd26088bcd38941.zip
op-kernel-dev-70d7d357578245f1993fd2d3ccd26088bcd38941.tar.gz
x86: fix broken flushing in GART nofullflush path
Impact: remove stale IOTLB entries In the non-default nofullflush case the GART is only flushed when next_bit wraps around. But it can happen that an unmap operation unmaps memory which is behind the current next_bit location. If these addresses are reused it may result in stale GART IO/TLB entries. Fix this by setting the GART next_bit always behind an unmapped location. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/apic.c')
0 files changed, 0 insertions, 0 deletions
OpenPOWER on IntegriCloud