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Re: [PATCH v6 4/5] [FUTURE] xen/arm: enable vPCI for domUs
- To: Stewart Hildebrand <stewart.hildebrand@xxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Tue, 14 Nov 2023 10:13:27 +0100
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- Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Paul Durrant <paul@xxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Tue, 14 Nov 2023 09:13:35 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 13.11.2023 23:21, Stewart Hildebrand wrote:
> --- a/xen/arch/x86/include/asm/domain.h
> +++ b/xen/arch/x86/include/asm/domain.h
> @@ -503,6 +503,8 @@ struct arch_domain
> #define has_vpit(d) (!!((d)->arch.emulation_flags & X86_EMU_PIT))
> #define has_pirq(d) (!!((d)->arch.emulation_flags & X86_EMU_USE_PIRQ))
>
> +#define arch_needs_vpci(d) ({ (void)(d); false; })
See my comments on the v5 thread on both this and ...
> --- a/xen/drivers/passthrough/pci.c
> +++ b/xen/drivers/passthrough/pci.c
> @@ -1542,6 +1542,18 @@ void iommu_dev_iotlb_flush_timeout(struct domain *d,
> struct pci_dev *pdev)
> pcidevs_unlock();
> }
>
> +static bool needs_vpci(const struct domain *d)
> +{
> + if ( is_hardware_domain(d) )
> + return false;
... this. (It is generally a good idea to wait a little with sending new
versions, when you can't be sure yet whether the earlier discussion has
settled.)
Jan
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