| commit | b68f007ad8ec30e567b42f839268e89ad2cabd63 | |
| author | David Woodhouse <dwmw2@infradead.org> | |
| Tue, 5 May 2009 08:25:28 +0000 (5 09:25 +0100) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Fri, 8 May 2009 22:45:10 +0000 (8 15:45 -0700) | ||
| tree | 2a9428a9931880e5d6673ffedeef4d627067805a | treesnapshot (tar.gz zip) |
| parent | a4392e8b0e6ee266a19f6db90c4d56d267a58b4f | commitdiff |
intel-iommu: Avoid panic() for DRHD at address zero.
(cherry picked from commit e523b38e2f568af58baa13120a994cbf24e6dee0)
If the BIOS does something obviously stupid, like claiming that the
registers for the IOMMU are at physical address zero, then print a nasty
message and abort, rather than trying to set up the IOMMU and then later
panicking.
It's becoming more and more obvious that trusting this stuff to the BIOS
was a mistake.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
(cherry picked from commit e523b38e2f568af58baa13120a994cbf24e6dee0)
If the BIOS does something obviously stupid, like claiming that the
registers for the IOMMU are at physical address zero, then print a nasty
message and abort, rather than trying to set up the IOMMU and then later
panicking.
It's becoming more and more obvious that trusting this stuff to the BIOS
was a mistake.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| drivers/pci/dmar.c | diffblobblamehistory |