12 Jun
2026
12 Jun
'26
3:39 a.m.
From: Pranjal Shrivastava praan@google.com Sent: Friday, June 12, 2026 2:38 AM
On Wed, Jun 10, 2026 at 04:43:15PM +0100, Matt Evans wrote:
--- a/drivers/pci/Kconfig +++ b/drivers/pci/Kconfig @@ -206,11 +206,7 @@ config PCIE_TPH config PCI_P2PDMA bool "PCI peer-to-peer transfer support" depends on ZONE_DEVICE
- #
- # The need for the scatterlist DMA bus address flag means PCI
P2PDMA
- # requires 64bit
- #
- depends on 64BIT
- select PCI_P2PDMA_CORE select GENERIC_ALLOCATOR select NEED_SG_DMA_FLAGS help
Nit: Did we drop depends on 64BIT intentionally here? I guess the full PCI_P2PDMA stack still selects NEED_SG_DMA_FLAGS? IIRC, NEED_SG_DMA_FLAGS doesn't select 64BIT?
seems that comment is stale. According to the commit msg:
" it would make vfio-pci only available if CONFIG_ZONE_DEVICE is present (e.g. 64-bit systems), "
so it sounds a redundant dependency hence is removed.