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| author | Alexey Kardashevskiy <aik@ozlabs.ru> | 2021-11-08 05:03:17 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-11-15 05:46:46 +0100 |
| commit | 2d33f5504490a9d90924476dbccd4a5349ee1ad0 (patch) | |
| tree | 1afaa9fd7fbb5ce744b76fd834726a6ae3d87954 | |
| parent | powerpc/pseries: Fix numa FORM2 parsing fallback code (diff) | |
| download | linux-2d33f5504490a9d90924476dbccd4a5349ee1ad0.tar.xz linux-2d33f5504490a9d90924476dbccd4a5349ee1ad0.zip | |
powerpc/pseries/ddw: Revert "Extend upper limit for huge DMA window for persistent memory"
This reverts commit 54fc3c681ded9437e4548e2501dc1136b23cfa9a
which does not allow 1:1 mapping even for the system RAM which
is usually possible.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211108040320.3857636-2-aik@ozlabs.ru
| -rw-r--r-- | arch/powerpc/platforms/pseries/iommu.c | 9 |
1 files changed, 0 insertions, 9 deletions
diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c index 49b401536d29..64385d6f33c2 100644 --- a/arch/powerpc/platforms/pseries/iommu.c +++ b/arch/powerpc/platforms/pseries/iommu.c @@ -1094,15 +1094,6 @@ static phys_addr_t ddw_memory_hotplug_max(void) phys_addr_t max_addr = memory_hotplug_max(); struct device_node *memory; - /* - * The "ibm,pmemory" can appear anywhere in the address space. - * Assuming it is still backed by page structs, set the upper limit - * for the huge DMA window as MAX_PHYSMEM_BITS. - */ - if (of_find_node_by_type(NULL, "ibm,pmemory")) - return (sizeof(phys_addr_t) * 8 <= MAX_PHYSMEM_BITS) ? - (phys_addr_t) -1 : (1ULL << MAX_PHYSMEM_BITS); - for_each_node_by_type(memory, "memory") { unsigned long start, size; int n_mem_addr_cells, n_mem_size_cells, len; |