From: Bjorn Helgaas <helgaas@kernel.org>
To: Keith Busch <kbusch@meta.com>
Cc: tglx@kernel.org, bhelgaas@google.com, maz@kernel.org,
lrizzo@google.com, hch@lst.de, changfengnan@bytedance.com,
namjain@linux.microsoft.com, linux-kernel@vger.kernel.org,
linux-pci@vger.kernel.org, linux-nvme@lists.infradead.org,
Keith Busch <kbusch@kernel.org>
Subject: Re: [PATCH 2/2] PCI/MSI: Implement irq_mask_noflush() for MSI-x
Date: Thu, 5 Nov 2026 13:41:16 -0600 [thread overview]
Message-ID: <20261105194116.GA1553387@bhelgaas> (raw)
In-Reply-To: <20261105182706.3700908-3-kbusch@meta.com>
On Thu, Nov 05, 2026 at 10:27:06AM -0800, Keith Busch wrote:
> From: Keith Busch <kbusch@kernel.org>
>
> Skip the read-back that flushes the MSI-x mask write. Parent domains
> that mask on behalf of PCI/MSI keep using their own irq_mask().
When you respin it,
s/MSI-x/MSI-X/ to match spec usage
next prev parent reply other threads:[~2026-11-05 19:41 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-05 18:27 [PATCH 0/2] genirq, PCI/MSI: mask without flushing Keith Busch
2026-11-05 18:27 ` [PATCH 1/2] genirq: Add disable_irq_noflush() Keith Busch
2026-11-05 18:27 ` [PATCH 2/2] PCI/MSI: Implement irq_mask_noflush() for MSI-x Keith Busch
2026-11-05 19:41 ` Bjorn Helgaas [this message]
2026-11-05 21:34 ` Keith Busch
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