From 089722e8939e580c9ccc64678ba22f563fdf3bb5 Mon Sep 17 00:00:00 2001 From: Li Zhe Date: Thu, 14 Aug 2025 14:47:13 +0800 Subject: [PATCH] vfio/type1: introduce a new member has_rsvd for struct vfio_dma Introduce a new member has_rsvd for struct vfio_dma. This member is used to indicate whether there are any reserved or invalid pfns in the region represented by this vfio_dma. If it is true, it indicates that there is at least one pfn in this region that is either reserved or invalid. Signed-off-by: Li Zhe Reviewed-by: David Hildenbrand Link: https://lore.kernel.org/r/20250814064714.56485-5-lizhe.67@bytedance.com Signed-off-by: Alex Williamson --- drivers/vfio/vfio_iommu_type1.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c index dbacd852efae..30e1b54f6c25 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -93,6 +93,7 @@ struct vfio_dma { bool iommu_mapped; bool lock_cap; /* capable(CAP_IPC_LOCK) */ bool vaddr_invalid; + bool has_rsvd; /* has 1 or more rsvd pfns */ struct task_struct *task; struct rb_root pfn_list; /* Ex-user pinned pfn list */ unsigned long *bitmap; @@ -782,6 +783,7 @@ static long vfio_pin_pages_remote(struct vfio_dma *dma, unsigned long vaddr, } out: + dma->has_rsvd |= rsvd; ret = vfio_lock_acct(dma, lock_acct, false); unpin_out: -- 2.47.3