From ceb7b62eaaaacfcf87473bd2e99ac73a758620cb Mon Sep 17 00:00:00 2001 From: Huan Yang Date: Mon, 28 Apr 2025 15:38:29 +0800 Subject: Revert "udmabuf: fix vmap_udmabuf error page set" This reverts commit 18d7de823b7150344d242c3677e65d68c5271b04. We cannot use vmap_pfn() in vmap_udmabuf() as it would fail the pfn_valid() check in vmap_pfn_apply(). This is because vmap_pfn() is intended to be used for mapping non-struct-page memory such as PCIe BARs. Since, udmabuf mostly works with pages/folios backed by shmem/hugetlbfs/THP, vmap_pfn() is not the right tool or API to invoke for implementing vmap. Signed-off-by: Huan Yang Suggested-by: Vivek Kasireddy Reported-by: Bingbu Cao Closes: https://lore.kernel.org/dri-devel/eb7e0137-3508-4287-98c4-816c5fd98e10@vivo.com/T/#mbda4f64a3532b32e061f4e8763bc8e307bea3ca8 Acked-by: Vivek Kasireddy Signed-off-by: Vivek Kasireddy Link: https://lore.kernel.org/r/20250428073831.19942-2-link@vivo.com --- drivers/dma-buf/Kconfig | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers/dma-buf/Kconfig') diff --git a/drivers/dma-buf/Kconfig b/drivers/dma-buf/Kconfig index fee04fdb0822..b46eb8a552d7 100644 --- a/drivers/dma-buf/Kconfig +++ b/drivers/dma-buf/Kconfig @@ -36,7 +36,6 @@ config UDMABUF depends on DMA_SHARED_BUFFER depends on MEMFD_CREATE || COMPILE_TEST depends on MMU - select VMAP_PFN help A driver to let userspace turn memfd regions into dma-bufs. Qemu can use this to create host dmabufs for guest framebuffers. -- cgit v1.2.3