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| author | Joerg Roedel <joerg.roedel@amd.com> | 2012-10-16 12:52:51 (GMT) |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2012-10-16 12:52:51 (GMT) |
| commit | c2ff5cf5294bcbd7fa50f7d860e90a66db7e5059 (patch) | |
| tree | 2ec5e407ddd6cd4bb563b41f8c7d5026c4a3358c /drivers/iommu/exynos-iommu.c | |
| parent | ddffeb8c4d0331609ef2581d84de4d763607bd37 (diff) | |
| download | linux-c2ff5cf5294bcbd7fa50f7d860e90a66db7e5059.tar.xz | |
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 'drivers/iommu/exynos-iommu.c')
0 files changed, 0 insertions, 0 deletions