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[PATCH v3 4/5] xen/arm: enable vPCI for dom0
- To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Stewart Hildebrand <stewart.hildebrand@xxxxxxx>
- Date: Mon, 9 Oct 2023 15:57:43 -0400
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- Cc: Stewart Hildebrand <stewart.hildebrand@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- Delivery-date: Mon, 09 Oct 2023 19:59:01 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
Set the pci flags in xen_arch_domainconfig to enable vPCI for dom0.
Signed-off-by: Stewart Hildebrand <stewart.hildebrand@xxxxxxx>
---
Julien had a suggestion to make this conditional on pci_passthrough_enabled [1].
However, in v5 of the PCI ARM SMMU series [2], we propose removing the
pci_passthrough_enabled flag. If pci_passthrough_enabled is gone, the conditions
under which vPCI should be enabled for dom0 aren't entirely clear to me (other
than CONFIG_HAS_VPCI=y).
v2->v3:
* new patch
[1] https://lists.xenproject.org/archives/html/xen-devel/2023-10/msg00475.html
[2] https://lists.xenproject.org/archives/html/xen-devel/2023-10/msg00210.html
---
xen/arch/arm/domain_build.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
index 24c9019cc43c..c1174535f430 100644
--- a/xen/arch/arm/domain_build.c
+++ b/xen/arch/arm/domain_build.c
@@ -3912,6 +3912,9 @@ void __init create_dom0(void)
panic("SVE vector length error\n");
}
+ if ( IS_ENABLED(CONFIG_HAS_VPCI) )
+ dom0_cfg.arch.pci_flags = XEN_DOMCTL_CONFIG_PCI_VPCI;
+
dom0 = domain_create(0, &dom0_cfg, CDF_privileged | CDF_directmap);
if ( IS_ERR(dom0) )
panic("Error creating domain 0 (rc = %ld)\n", PTR_ERR(dom0));
--
2.42.0
|
