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Commit 2aeeb0a4 authored by Kai-Heng Feng's avatar Kai-Heng Feng Committed by Greg Kroah-Hartman
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iommu/amd: Override wrong IVRS IOAPIC on Raven Ridge systems

[ Upstream commit 93d051550ee02eaff9a2541d825605a7bd778027 ]

Raven Ridge systems may have malfunction touchpad or hang at boot if
incorrect IVRS IOAPIC is provided by BIOS.

Users already found correct "ivrs_ioapic=" values, let's put them inside
kernel to workaround buggy BIOS.

BugLink: https://bugs.launchpad.net/bugs/1795292
BugLink: https://bugs.launchpad.net/bugs/1837688


Reported-by: default avatarkbuild test robot <lkp@intel.com>
Signed-off-by: default avatarKai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 291da335
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