From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Dexuan Cui <decui@microsoft.com>,
x86@kernel.org, Bjorn Helgaas <bhelgaas@google.com>,
Marc Zyngier <marc.zyngier@arm.com>,
KY Srinivasan <kys@microsoft.com>,
Stephen Hemminger <sthemmin@microsoft.com>,
linux-pci@vger.kernel.org, devel@linuxdriverproject.org,
Josh Poulson <jopoulso@microsoft.com>,
Haiyang Zhang <haiyangz@microsoft.com>,
Simon Xiao <sixiao@microsoft.com>,
Saeed Mahameed <saeedm@mellanox.com>,
Mihai Costache <v-micos@microsoft.com>,
Jork Loeser <Jork.Loeser@microsoft.com>
Subject: [patch 2/3] PCI/MSI: Set MSI_FLAG_MUST_REACTIVATE in core code
Date: Tue, 17 Oct 2017 09:54:58 +0200 [thread overview]
Message-ID: <20171017075600.448649905@linutronix.de> (raw)
In-Reply-To: 20171017075456.694047687@linutronix.de
If interrupt reservation mode is enabled then the PCI/MSI interrupts must
be reactivated after early activation.
Make sure that all callers of pci_msi_create_irq_domain() have the
MSI_FLAG_MUST_REACTIVATE set when reservation mode is enabled.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
drivers/pci/msi.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -1441,6 +1441,8 @@ struct irq_domain *pci_msi_create_irq_do
pci_msi_domain_update_chip_ops(info);
info->flags |= MSI_FLAG_ACTIVATE_EARLY;
+ if (IS_ENABLED(CONFIG_GENERIC_IRQ_RESERVATION))
+ info->flags |= MSI_FLAG_MUST_REACTIVATE;
domain = msi_create_irq_domain(fwnode, info, parent);
if (!domain)
next prev parent reply other threads:[~2017-10-17 7:56 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-17 7:54 [patch 0/3] x86/PCI/MSI: Make sure that irq reservation mode works everywhere Thomas Gleixner
2017-10-17 7:54 ` [patch 1/3] genirq: Add config option for reservation mode Thomas Gleixner
2017-10-17 7:54 ` Thomas Gleixner [this message]
2017-10-17 12:28 ` [patch 2/3] PCI/MSI: Set MSI_FLAG_MUST_REACTIVATE in core code Thomas Gleixner
2017-10-17 7:54 ` [patch 3/3] x86/vector/msi: Select CONFIG_GENERIC_IRQ_RESERVATION_MODE Thomas Gleixner
2017-10-17 18:59 ` Dexuan Cui
2017-10-17 21:49 ` Thomas Gleixner
2017-10-20 23:01 ` [patch 0/3] x86/PCI/MSI: Make sure that irq reservation mode works everywhere Bjorn Helgaas
2017-10-21 7:19 ` Thomas Gleixner
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20171017075600.448649905@linutronix.de \
--to=tglx@linutronix.de \
--cc=Jork.Loeser@microsoft.com \
--cc=bhelgaas@google.com \
--cc=decui@microsoft.com \
--cc=devel@linuxdriverproject.org \
--cc=haiyangz@microsoft.com \
--cc=jopoulso@microsoft.com \
--cc=kys@microsoft.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pci@vger.kernel.org \
--cc=marc.zyngier@arm.com \
--cc=saeedm@mellanox.com \
--cc=sixiao@microsoft.com \
--cc=sthemmin@microsoft.com \
--cc=v-micos@microsoft.com \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).