Re: Bug 205201 - Booting halts if Dawicontrol DC-2976 UW SCSI board installed, unless RAM size limited to 3500M
From: Christian Zigotzky <hidden>
Date: 2019-11-27 15:15:05
Also in:
linux-arch, linux-iommu, linux-mm, lkml
On 27 November 2019 at 07:56 am, Mike Rapoport wrote:
quoted hunk ↗ jump to hunk
Maybe we'll simply force bottom up allocation before calling swiotlb_init()? Anyway, it's the last memblock allocation.diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index 62f74b1b33bd..771e6cf7e2b9 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c@@ -286,14 +286,15 @@ void __init mem_init(void) /* * book3s is limited to 16 page sizes due to encoding this in * a 4-bit field for slices. */ BUILD_BUG_ON(MMU_PAGE_COUNT > 16); #ifdef CONFIG_SWIOTLB + memblock_set_bottom_up(true); swiotlb_init(0); #endif high_memory = (void *) __va(max_low_pfn * PAGE_SIZE); set_max_mapnr(max_pfn); memblock_free_all();
Hello Mike, I tested the latest Git kernel with your new patch today. My PCI TV card works without any problems. Thanks, Christian