Messages in this thread | | | Date | Sun, 2 Jan 2022 23:54:46 -0800 | From | Christoph Hellwig <> | Subject | Re: [PATCH] Swiotlb: Add CONFIG_HAS_IOMEM check around memremap() in the swiotlb_mem_remap() |
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On Fri, Dec 31, 2021 at 11:56:40AM -0500, Tianyu Lan wrote: > From: Tianyu Lan <Tianyu.Lan@microsoft.com> > > HAS_IOMEM option may not be selected on some platforms(e.g, s390) and this > will cause compile error due to miss memremap() implementation. Fix it via > adding HAS_IOMEM check around memremap() in the swiotlb.c. > > Reported-by: kernel test robot <lkp@intel.com> > Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft.com> > --- > kernel/dma/swiotlb.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c > index b36c1cdd0c4f..3de651ba38cc 100644 > --- a/kernel/dma/swiotlb.c > +++ b/kernel/dma/swiotlb.c > @@ -167,6 +167,7 @@ static void *swiotlb_mem_remap(struct io_tlb_mem *mem, unsigned long bytes) > { > void *vaddr = NULL; > > +#ifdef CONFIG_HAS_IOMEM
Please stub out all of swiotlb_mem_remap instead of the ifdef inside the function.
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