linux-kernel - [PATCH 0/2] iommu/vt-d: Fix posted vCPU vs. posted MSI bugs

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Message-ID: <20250315025135.2365846-1-seanjc@google.com>
Date: Fri, 14 Mar 2025 19:51:33 -0700
From: Sean Christopherson <seanjc@...gle.com>
To: David Woodhouse <dwmw2@...radead.org>, Lu Baolu <baolu.lu@...ux.intel.com>
Cc: iommu@...ts.linux.dev, linux-kernel@...r.kernel.org, 
	Thomas Gleixner <tglx@...utronix.de>, Jacob Pan <jacob.jun.pan@...ux.intel.com>, 
	Sean Christopherson <seanjc@...gle.com>
Subject: [PATCH 0/2] iommu/vt-d: Fix posted vCPU vs. posted MSI bugs

Fix bugs where using posted MSIs will clobber IRTEs that are configured to
post IRQs to a vCPU, and where undoing vCPU posting fails to put the IRTE
backing into posted MSI mode.

Sean Christopherson (2):
  iommu/vt-d: Put IRTE back into posted MSI mode if vCPU posting is
    disabled
  iommu/vt-d: Don't clobber posted vCPU IRTE when host IRQ affinity
    changes

 drivers/iommu/intel/irq_remapping.c | 42 ++++++++++++++++++-----------
 1 file changed, 27 insertions(+), 15 deletions(-)


base-commit: ea9bd29a9c0d757b3384ae3e633e6bbaddf00725
-- 
2.49.0.rc1.451.g8f38331e32-goog