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| author |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-12-23 06:59:19 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-12-23 06:59:19 -0500 |
| commit | 749e4121d6ee7fd4495779730fbc6ae800d0317c (patch) | |
| tree | 9270ebabd9e3b57ef0427495ec9228f52454b608 /arch/powerpc/mm/mem.c | |
| parent | tty: serial: 21285: stop using the unused[] variable from struct uart_port (diff) | |
| parent | Linux 5.5-rc3 (diff) | |
| download | linux-dev-749e4121d6ee7fd4495779730fbc6ae800d0317c.tar.xz linux-dev-749e4121d6ee7fd4495779730fbc6ae800d0317c.zip | |
Merge 5.5-rc3 into tty-next
We need the tty/serial fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/powerpc/mm/mem.c')
| -rw-r--r-- | arch/powerpc/mm/mem.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index 9488b63dfc87..617c2777926f 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -289,6 +289,14 @@ void __init mem_init(void) BUILD_BUG_ON(MMU_PAGE_COUNT > 16); #ifdef CONFIG_SWIOTLB + /* + * Some platforms (e.g. 85xx) limit DMA-able memory way below + * 4G. We force memblock to bottom-up mode to ensure that the + * memory allocated in swiotlb_init() is DMA-able. + * As it's the last memblock allocation, no need to reset it + * back to to-down. + */ + memblock_set_bottom_up(true); swiotlb_init(0); #endif |