From: Lorenzo Pieralisi <lpieralisi@kernel.org>
To: Nirmal Patel <nirmal.patel@linux.intel.com>, linux-pci@vger.kernel.org
Cc: Lorenzo Pieralisi <lpieralisi@kernel.org>,
acelan.kao@canonical.com, Liang_Xiao1@Dell.com,
Francisco Munoz <francisco.munoz.ruiz@linux.intel.com>
Subject: Re: [PATCH v2] PCI: vmd: Disable MSI remapping after suspend
Date: Fri, 11 Nov 2022 12:01:27 +0100 [thread overview]
Message-ID: <166816447125.204404.14576437175253719672.b4-ty@kernel.org> (raw)
In-Reply-To: <20221109142652.450998-1-nirmal.patel@linux.intel.com>
On Wed, 9 Nov 2022 07:26:52 -0700, Nirmal Patel wrote:
> MSI remapping is disabled by VMD driver for Intel's Icelake and
> newer systems in order to improve performance by setting
> VMCONFIG_MSI_REMAP. By design VMCONFIG_MSI_REMAP register is cleared
> by firmware during boot. The same register gets cleared when system
> is put in S3 power state. VMD driver needs to set this register again
> in order to avoid interrupt issues with devices behind VMD if MSI
> remapping was disabled before.
>
> [...]
Applied to pci/vmd, thanks!
[1/1] PCI: vmd: Disable MSI remapping after suspend
https://git.kernel.org/lpieralisi/pci/c/d899aa668498
Thanks,
Lorenzo
prev parent reply other threads:[~2022-11-11 11:01 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-09 14:26 [PATCH v2] PCI: vmd: Disable MSI remapping after suspend Nirmal Patel
2022-11-11 11:01 ` Lorenzo Pieralisi [this message]
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