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Re: [PATCH v11 0/2] arm/virt: CXL support via pxb_cxl
From: |
Jonathan Cameron |
Subject: |
Re: [PATCH v11 0/2] arm/virt: CXL support via pxb_cxl |
Date: |
Fri, 24 Jun 2022 10:07:09 +0100 |
On Thu, 16 Jun 2022 15:19:48 +0100
Jonathan Cameron via <qemu-devel@nongnu.org> wrote:
> Previously patches 40 and 41 of
> [PATCH v10 00/45] CXl 2.0 emulation Support
> https://lore.kernel.org/qemu-devel/20220429144110.25167-45-Jonathan.Cameron@huawei.com/#r
>
> Now the base CXL support including for x86/pc is upstream (patches 1-39)
> there are no dependencies between the next few CXL elements in my queue
> so they can be reviewed / merged in parallel. Hence I'll be sending switch
> support (43-45) separately and hopefully DOE / CDAT support in a few days.
> I'm assuming this particular series should go through the arm tree if
> the maintainers are happy?
Hi All,
If Peter or anyone else has time to look at this with a view to getting
ARM support on par with x86 that would be great. I 'think' this should
be uncontroversial but I'm far from an expert! I'm particularly keen on
getting this upstream as most of my testing is on ARM/virt.
Thanks,
Jonathan
>
> Changes since v10:
> - CXL machine setup is now entirely from the supporting machines rather
> than via code in machine.c and vl.c. Change made for x86 in:
>
> 20220608145440.26106-1-Jonathan.Cameron@huawei.com/">https://lore.kernel.org/qemu-devel/20220608145440.26106-1-Jonathan.Cameron@huawei.com/
> - Dropped Ben's sign off from patch 1 which resulted from him carrying
> these patches of mine for a while. It isn't a useful bit of history
> to carry now they are back to me.
>
> This short series adds support for CXL host bridges and CXL fixed memory
> windows on arm/virt. Two types of memory region are needed:
> 1. Register space for CXL host bridges (static allowance for 16)
> 2. CXL fixed memory windows: Ranges of host PA space which
> are statically mapped to an interleave across 1 or more CXL host
> bridges.
>
> Both of these types of region are described via appropriate ACPI tables.
> As the CEDT table is created with the same code as for x86 I don't think
> there is much value in duplicating the existing CXL bios-tables test.
>
> The second patch adds a single complex test. We test a lot more configurations
> on x86 but it does not seem useful to duplicate them all on ARM and this
> single
> test should act as a smoke test for any problems that occur.
>
> Run through CI at:
> https://gitlab.com/jic23/qemu/-/pipelines/564934276
> Intermittent (unrelated I assume) failure in msys64 aio-test resolved
> with a retry.
>
> Thanks,
>
> Jonathan
>
> Jonathan Cameron (2):
> hw/arm/virt: Basic CXL enablement on pci_expander_bridge instances
> pxb-cxl
> qtest/cxl: Add aarch64 virt test for CXL
>
> hw/arm/virt-acpi-build.c | 34 ++++++++++++++++++++++++++++
> hw/arm/virt.c | 44 ++++++++++++++++++++++++++++++++++++
> include/hw/arm/virt.h | 3 +++
> tests/qtest/cxl-test.c | 48 ++++++++++++++++++++++++++++++++--------
> tests/qtest/meson.build | 1 +
> 5 files changed, 121 insertions(+), 9 deletions(-)
>
- Re: [PATCH v11 1/2] hw/arm/virt: Basic CXL enablement on pci_expander_bridge instances pxb-cxl, (continued)
- Re: [PATCH v11 1/2] hw/arm/virt: Basic CXL enablement on pci_expander_bridge instances pxb-cxl, Jonathan Cameron, 2022/06/24
- Re: [PATCH v11 1/2] hw/arm/virt: Basic CXL enablement on pci_expander_bridge instances pxb-cxl, Peter Maydell, 2022/06/24
- Re: [PATCH v11 1/2] hw/arm/virt: Basic CXL enablement on pci_expander_bridge instances pxb-cxl, Jonathan Cameron, 2022/06/24
- Re: [PATCH v11 1/2] hw/arm/virt: Basic CXL enablement on pci_expander_bridge instances pxb-cxl, Jonathan Cameron, 2022/06/24
- Re: [PATCH v11 1/2] hw/arm/virt: Basic CXL enablement on pci_expander_bridge instances pxb-cxl, Peter Maydell, 2022/06/24
- Re: [PATCH v11 1/2] hw/arm/virt: Basic CXL enablement on pci_expander_bridge instances pxb-cxl, Jonathan Cameron, 2022/06/24
[PATCH v11 2/2] qtest/cxl: Add aarch64 virt test for CXL, Jonathan Cameron, 2022/06/16
Re: [PATCH v11 0/2] arm/virt: CXL support via pxb_cxl,
Jonathan Cameron <=