From: Jonathan Cameron via <qemu-devel@nongnu.org>
To: Peter Maydell <peter.maydell@linaro.org>
Cc: qemu-devel@nongnu.org, "Fan Ni" <fan.ni@samsung.com>,
mst@redhat.com, "Zhijian Li" <lizhijian@fujitsu.com>,
"Itaru Kitayama" <itaru.kitayama@linux.dev>,
linuxarm@huawei.com, linux-cxl@vger.kernel.org,
qemu-arm@nongnu.org,
"Yuquan Wang" <wangyuquan1236@phytium.com.cn>,
"Philippe Mathieu-Daudé" <philmd@linaro.org>,
"Alireza Sanaee" <alireza.sanaee@huawei.com>,
"Alex Bennée" <alex.bennee@linaro.org>
Subject: Re: [PATCH v15 2/4] hw/cxl: Make the CXL fixed memory windows devices.
Date: Fri, 13 Jun 2025 18:17:36 +0100 [thread overview]
Message-ID: <20250613181736.000063e5@huawei.com> (raw)
In-Reply-To: <CAFEAcA_ZbAnUS4Ufa+jsOgj6aeRS5JHJP=scw6d0qXd3NNtqdA@mail.gmail.com>
On Fri, 13 Jun 2025 17:08:28 +0100
Peter Maydell <peter.maydell@linaro.org> wrote:
> On Fri, 13 Jun 2025 at 14:10, Jonathan Cameron
> <Jonathan.Cameron@huawei.com> wrote:
> > For these specific devices (the fixed memory windows) there isn't
> > any state as they are representing fixed configuration of the system.
> > The state is all in the host bridges and beyond. I'll add
> > a comment as you suggest.
> >
> > Currently CXL emulation is completely broken wrt to migration and
> > there are some known issues for reset as well. Both are on the list
> > of things to fix. Migration is less important as the only current use
> > for this stuff is running software stack test cases and for that
> > migration isn't currently of interest - that will change for some
> > of the virtualization related work that is just getting started.
>
> That's OK as long as something somewhere is registering a
> migration-blocker so there's a useful error message if the
> user ever tries it.
:(
Michael asked for us to fix that a while back and I forgot.
Will sort that out shortly.
J
>
> -- PMM
next prev parent reply other threads:[~2025-06-13 17:18 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-12 13:43 [PATCH v15 0/4] arm/virt: CXL support via pxb_cxl Jonathan Cameron via
2025-06-12 13:43 ` [PATCH v15 1/4] hw/cxl-host: Add an index field to CXLFixedMemoryWindow Jonathan Cameron via
2025-06-13 2:09 ` Zhijian Li (Fujitsu) via
2025-06-12 13:43 ` [PATCH v15 2/4] hw/cxl: Make the CXL fixed memory windows devices Jonathan Cameron via
2025-06-13 2:09 ` Zhijian Li (Fujitsu) via
2025-06-13 12:33 ` Peter Maydell
2025-06-13 13:09 ` Jonathan Cameron via
2025-06-13 16:08 ` Peter Maydell
2025-06-13 17:17 ` Jonathan Cameron via [this message]
2025-06-12 13:43 ` [PATCH v15 3/4] hw/arm/virt: Basic CXL enablement on pci_expander_bridge instances pxb-cxl Jonathan Cameron via
2025-06-13 12:57 ` Peter Maydell
2025-06-13 15:20 ` Jonathan Cameron via
2025-06-13 16:07 ` Peter Maydell
2025-06-13 17:21 ` Jonathan Cameron via
2025-06-25 16:08 ` Jonathan Cameron via
2025-06-12 13:43 ` [PATCH v15 4/4] qtest/cxl: Add aarch64 virt test for CXL Jonathan Cameron via
2025-06-12 22:02 ` Itaru Kitayama
2025-06-13 12:32 ` Peter Maydell
2025-06-13 17:16 ` Jonathan Cameron via
2025-06-12 16:04 ` [PATCH v15 0/4] arm/virt: CXL support via pxb_cxl Peter Maydell
2025-06-12 16:33 ` Jonathan Cameron via
2025-06-13 5:07 ` Itaru Kitayama
2025-06-13 15:47 ` Jonathan Cameron via
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