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Message-ID: <1244555840-3855-4-git-send-email-joerg.roedel@amd.com> Date: Tue, 9 Jun 2009 15:57:19 +0200 From: Joerg Roedel <joerg.roedel@....com> To: Ingo Molnar <mingo@...e.hu> CC: iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org, Joerg Roedel <joerg.roedel@....com>, Chris Wright <chrisw@...s-sol.org> Subject: [PATCH 3/4] amd-iommu: detach device explicitly before attaching it to a new domain This fixes a bug with a device that could not be assigned to a KVM guest because it is still assigned to a dma_ops protection domain. [chrisw: simply remove WARN_ON(), will always fire since dev->driver will be pci-sub] Signed-off-by: Chris Wright <chrisw@...s-sol.org> Signed-off-by: Joerg Roedel <joerg.roedel@....com> --- arch/x86/kernel/amd_iommu.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index 8187260..772e910 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -2073,7 +2073,7 @@ static int amd_iommu_attach_device(struct iommu_domain *dom, old_domain = domain_for_device(devid); if (old_domain) - return -EBUSY; + detach_device(old_domain, devid); attach_device(iommu, domain, devid); -- 1.6.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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