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authorLeah Rowe <leah@libreboot.org>2024-05-04 04:13:53 +0100
committerLeah Rowe <leah@libreboot.org>2024-05-04 04:32:35 +0100
commit7e799e1f16d671b58eb0b1fdbe06069fc175608c (patch)
treebc11e3980662bfa9207382c72f664dd40fddcc29 /config/coreboot/e6420_10mb
parentd9c0346a003d6a149e8759bb224daa720b7254ea (diff)
nb/haswell: lock policy regs when disabling IOMMU
Angel Pons told me I should do it. See comments here: https://review.coreboot.org/c/coreboot/+/81016 I see no harm in complying with the request. I'll merge this into the main patch at a later date and try to get this upstreamed. Just a reminder: on Optiplex 9020 variants, Xorg locks up under Linux when tested with a graphics card; disabling IOMMU works around the issue. Intel graphics work just fine with IOMMU turned on. Libreboot disables IOMMU by default, on the 9020, so that users can install graphics cards easily. I'm pretty sure this is the correct way to do it. The machine still seems to boot, in this configuration. Signed-off-by: Leah Rowe <leah@libreboot.org>
Diffstat (limited to 'config/coreboot/e6420_10mb')
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