Re: [PATCH v6 03/16] dma-debug: refactor to use physical addresses for page mapping

[PATCH v6 00/16] dma-mapping: migrate to physical address-based API · Leon Romanovsky <leon@kernel.org> · 2025-09-09
[PATCH v6 01/16] dma-mapping: introduce new DMA attribute to indicate MMIO memory · Leon Romanovsky <leon@kernel.org> · 2025-09-09
[PATCH v6 03/16] dma-debug: refactor to use physical addresses for page mapping · Leon Romanovsky <leon@kernel.org> · 2025-09-09
Re: [PATCH v6 03/16] dma-debug: refactor to use physical addresses for page mapping · Leon Romanovsky <leon@kernel.org> · 2025-09-09
Re: [PATCH v6 03/16] dma-debug: refactor to use physical addresses for page mapping · Leon Romanovsky <leon@kernel.org> · 2025-09-10
Re: [PATCH v6 03/16] dma-debug: refactor to use physical addresses for page mapping · Jason Gunthorpe <jgg@nvidia.com> · 2025-09-10
Re: [PATCH v6 03/16] dma-debug: refactor to use physical addresses for page mapping · Marek Szyprowski <m.szyprowski@samsung.com> · 2025-09-11
[PATCH v6 04/16] dma-mapping: rename trace_dma_*map_page to trace_dma_*map_phys · Leon Romanovsky <leon@kernel.org> · 2025-09-09
[PATCH v6 02/16] iommu/dma: implement DMA_ATTR_MMIO for dma_iova_link(). · Leon Romanovsky <leon@kernel.org> · 2025-09-09
[PATCH v6 06/16] iommu/dma: implement DMA_ATTR_MMIO for iommu_dma_(un)map_phys() · Leon Romanovsky <leon@kernel.org> · 2025-09-09
[PATCH v6 07/16] dma-mapping: convert dma_direct_*map_page to be phys_addr_t based · Leon Romanovsky <leon@kernel.org> · 2025-09-09
[PATCH v6 08/16] kmsan: convert kmsan_handle_dma to use physical addresses · Leon Romanovsky <leon@kernel.org> · 2025-09-09
[PATCH v6 05/16] iommu/dma: rename iommu_dma_*map_page to iommu_dma_*map_phys · Leon Romanovsky <leon@kernel.org> · 2025-09-09
[PATCH v6 10/16] xen: swiotlb: Open code map_resource callback · Leon Romanovsky <leon@kernel.org> · 2025-09-09
[PATCH v6 11/16] dma-mapping: export new dma_*map_phys() interface · Leon Romanovsky <leon@kernel.org> · 2025-09-09
[PATCH v6 09/16] dma-mapping: implement DMA_ATTR_MMIO for dma_(un)map_page_attrs() · Leon Romanovsky <leon@kernel.org> · 2025-09-09
[PATCH v6 13/16] mm/hmm: properly take MMIO path · Leon Romanovsky <leon@kernel.org> · 2025-09-09
[PATCH v6 14/16] block-dma: migrate to dma_map_phys instead of map_page · Leon Romanovsky <leon@kernel.org> · 2025-09-09
[PATCH v6 15/16] block-dma: properly take MMIO path · Leon Romanovsky <leon@kernel.org> · 2025-09-09
[PATCH v6 12/16] mm/hmm: migrate to physical address-based DMA mapping API · Leon Romanovsky <leon@kernel.org> · 2025-09-09
[PATCH v6 16/16] nvme-pci: unmap MMIO pages with appropriate interface · Leon Romanovsky <leon@kernel.org> · 2025-09-09
Re: [PATCH v6 00/16] dma-mapping: migrate to physical address-based API · Marek Szyprowski <m.szyprowski@samsung.com> · 2025-09-11
Re: [PATCH v6 00/16] dma-mapping: migrate to physical address-based API · Leon Romanovsky <leon@kernel.org> · 2025-09-15
Re: [PATCH v6 00/16] dma-mapping: migrate to physical address-based API · Keith Busch <kbusch@kernel.org> · 2025-09-19
Re: [PATCH v6 00/16] dma-mapping: migrate to physical address-based API · Leon Romanovsky <leon@kernel.org> · 2025-09-20
Re: [PATCH v6 00/16] dma-mapping: migrate to physical address-based API · Keith Busch <kbusch@kernel.org> · 2025-09-21
Re: [PATCH v6 00/16] dma-mapping: migrate to physical address-based API · Jason Gunthorpe <jgg@nvidia.com> · 2025-09-23
Re: [PATCH v6 00/16] dma-mapping: migrate to physical address-based API · Keith Busch <kbusch@kernel.org> · 2025-09-23
Re: [PATCH v6 00/16] dma-mapping: migrate to physical address-based API · Jason Gunthorpe <jgg@nvidia.com> · 2025-09-23
Re: [PATCH v6 00/16] dma-mapping: migrate to physical address-based API · Keith Busch <kbusch@kernel.org> · 2025-09-23

From: Jason Gunthorpe <jgg@nvidia.com>
Date: 2025-09-10 11:58:43
Also in: linux-block, linux-doc, linux-iommu, linux-mm, linux-nvme, linux-trace-kernel, lkml, rust-for-linux, virtualization, xen-devel

On Wed, Sep 10, 2025 at 08:26:18AM +0300, Leon Romanovsky wrote:

 #define PageHighMem(__p) is_highmem_idx(page_zonenum(__p))
-#define PhysHighMem(__p) (PageHighMem(phys_to_page(__p)))
 #define folio_test_highmem(__f)        is_highmem_idx(folio_zonenum(__f))
 #else
 PAGEFLAG_FALSE(HighMem, highmem)
 #endif
+#define PhysHighMem(__p) (PageHighMem(phys_to_page(__p)))

Yeah, that's what I imagined, and I'd make it a static inline

static inline bool PhysHighMem(phys_addr_t phys)

These existing macros are old fashioned imho.

Jason

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