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| author |   Joerg Roedel <joerg.roedel@amd.com> | 2012-10-16 14:52:51 +0200 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2012-10-16 14:52:51 +0200 |
| commit | c2ff5cf5294bcbd7fa50f7d860e90a66db7e5059 (patch) | |
| tree | 2ec5e407ddd6cd4bb563b41f8c7d5026c4a3358c /drivers/iommu/tegra-smmu.c | |
| parent | Linux 3.7-rc1 (diff) | |
| download | linux-dev-c2ff5cf5294bcbd7fa50f7d860e90a66db7e5059.tar.xz linux-dev-c2ff5cf5294bcbd7fa50f7d860e90a66db7e5059.zip | |
iommu/amd: Work around wrong IOAPIC device-id in IVRS table
On some systems the BIOS puts the wrong device-id for the
IO-APIC into the IVRS table. The result is that interrupt
remapping is not working for the IO-APIC irqs. This usually
means a kernel panic at boot because the timer is not
working.
Fix this kernel panic by disabling interrupt remapping if
this problem is discovered in the IVRS table.
Reported-by: Andrew Oakley <andrew@ado.is-a-geek.net>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions