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From: Jason Gunthorpe <jgg@nvidia.com>
To: Leon Romanovsky <leon@kernel.org>
Cc: Lu Baolu <baolu.lu@linux.intel.com>, <tglx@linutronix.de>,
	<ashok.raj@intel.com>, <kevin.tian@intel.com>,
	<dave.jiang@intel.com>, <megha.dey@intel.com>,
	<dwmw2@infradead.org>, <alex.williamson@redhat.com>,
	<bhelgaas@google.com>, <dan.j.williams@intel.com>,
	<dmaengine@vger.kernel.org>, <eric.auger@redhat.com>,
	<jacob.jun.pan@intel.com>, <kvm@vger.kernel.org>,
	<kwankhede@nvidia.com>, <linux-kernel@vger.kernel.org>,
	<linux-pci@vger.kernel.org>, <maz@kernel.org>,
	<mona.hossain@intel.com>, <netanelg@mellanox.com>,
	<parav@mellanox.com>, <pbonzini@redhat.com>, <rafael@kernel.org>,
	<samuel.ortiz@intel.com>, <sanjay.k.kumar@intel.com>,
	<shahafs@mellanox.com>, <tony.luck@intel.com>, <vkoul@kernel.org>,
	<yan.y.zhao@linux.intel.com>, <yi.l.liu@intel.com>
Subject: Re: [RFC PATCH v2 1/1] platform-msi: Add platform check for subdevice irq domain
Date: Wed, 6 Jan 2021 11:23:39 -0400	[thread overview]
Message-ID: <20210106152339.GA552508@nvidia.com> (raw)
In-Reply-To: <20210106104017.GV31158@unreal>

On Wed, Jan 06, 2021 at 12:40:17PM +0200, Leon Romanovsky wrote:

> I asked what will you do when QEMU will gain needed functionality?
> Will you remove QEMU from this list? If yes, how such "new" kernel will
> work on old QEMU versions?

The needed functionality is some VMM hypercall, so presumably new
kernels that support calling this hypercall will be able to discover
if the VMM hypercall exists and if so superceed this entire check.

Jason

  reply	other threads:[~2021-01-06 15:24 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-06  2:27 Lu Baolu
2021-01-06  6:06 ` Leon Romanovsky
2021-01-06 10:10   ` Lu Baolu
2021-01-06 10:40     ` Leon Romanovsky
2021-01-06 15:23       ` Jason Gunthorpe [this message]
2021-01-06 16:01         ` Leon Romanovsky
2021-01-07  1:55           ` Lu Baolu
2021-01-07  2:04           ` Tian, Kevin
2021-01-07  6:09             ` Leon Romanovsky
2021-01-07  6:55               ` Tian, Kevin
2021-01-07  7:16                 ` Leon Romanovsky
2021-01-12  5:17                   ` Lu Baolu
2021-01-12  5:53                     ` Leon Romanovsky
2021-01-12  6:59                       ` Tian, Kevin
2021-01-12  7:34                         ` Leon Romanovsky

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