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Re: [PATCH 13/13] microvm/acpi: use GSI 16-23 for virtio
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From: |
Gerd Hoffmann |
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Subject: |
Re: [PATCH 13/13] microvm/acpi: use GSI 16-23 for virtio |
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Date: |
Mon, 23 Mar 2020 11:23:45 +0100 |
On Fri, Mar 20, 2020 at 11:30:16AM -0400, Konrad Rzeszutek Wilk wrote:
> On Thu, Mar 19, 2020 at 09:01:17AM +0100, Gerd Hoffmann wrote:
> > With ACPI enabled and IO-APIC being properly declared in the ACPI tables
> > we can use interrupt lines 16-23 for virtio and avoid shared interrupts.
>
> 7 interrupt lines? Is there a specific requirements of which
> ones should be assigned to what device?
8 lines (23 is inclusive), one for each virtio device. It wouldn't give
you separate config change or per-queue interrupts (I think virtio-mmio
doesn't support that). It only avoids sharing interrupts with legacy
pc devices like rtc and acpi.
cheers,
Gerd
- Re: [PATCH 03/13] microvm: add isa-acpi device, (continued)
[PATCH 04/13] microvm: add minimal acpi support., Gerd Hoffmann, 2020/03/19
[PATCH 02/13] acpi: factor out acpi_dsdt_add_fw_cfg(), Gerd Hoffmann, 2020/03/19
[PATCH 13/13] microvm/acpi: use GSI 16-23 for virtio, Gerd Hoffmann, 2020/03/19
[PATCH 01/13] acpi: make build_madt() more generic., Gerd Hoffmann, 2020/03/19
[PATCH 12/13] microvm: make virtio irq base runtime configurable, Gerd Hoffmann, 2020/03/19
[PATCH 08/13] [testing] seabios: update config & build rules, Gerd Hoffmann, 2020/03/19
[PATCH 10/13] microvm/acpi: add rtc, Gerd Hoffmann, 2020/03/19
[PATCH 06/13] microvm: disable virtio-mmio cmdline hack, Gerd Hoffmann, 2020/03/19
[PATCH 11/13] microvm/acpi: add serial, Gerd Hoffmann, 2020/03/19
[PATCH 07/13] [testing] seabios: update submodule to experimental microvm branch, Gerd Hoffmann, 2020/03/19
[PATCH 05/13] microvm: add acpi_dsdt_add_virtio() for x86, Gerd Hoffmann, 2020/03/19