diff options
| author | wahrenst <wahrenst@gmx.net> | 2023-09-06 22:40:12 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-11-20 11:59:20 +0100 |
| commit | bf96d362aa180714efc88f371b10a1662f1e4c78 (patch) | |
| tree | 069087616b0e5ea6edee2346c4cd740b89d6f35a | |
| parent | 7c8ad76067f85c84b1e980356f56d0aaaf2df86f (diff) | |
ARM: 9323/1: mm: Fix ARCH_LOW_ADDRESS_LIMIT when CONFIG_ZONE_DMA
[ Upstream commit 399da29ff5eb3f675c71423bec4cf2208f218576 ]
Configuring VMSPLIT_2G + LPAE on Raspberry Pi 4 leads to SWIOTLB
buffer allocation beyond platform dma_zone_size of SZ_1G, which
results in broken SD card boot.
So fix this be setting ARCH_LOW_ADDRESS_LIMIT in CONFIG_ZONE_DMA
case.
Suggested-by: Russell King <rmk+kernel@armlinux.org.uk>
Fixes: e9faf9b0b07a ("ARM: add multi_v7_lpae_defconfig")
Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | arch/arm/include/asm/dma.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/include/asm/dma.h b/arch/arm/include/asm/dma.h index c6aded1b069cf..e2a1916013e75 100644 --- a/arch/arm/include/asm/dma.h +++ b/arch/arm/include/asm/dma.h @@ -12,6 +12,9 @@ extern phys_addr_t arm_dma_zone_size; \ arm_dma_zone_size && arm_dma_zone_size < (0x100000000ULL - PAGE_OFFSET) ? \ (PAGE_OFFSET + arm_dma_zone_size) : 0xffffffffUL; }) + +extern phys_addr_t arm_dma_limit; +#define ARCH_LOW_ADDRESS_LIMIT arm_dma_limit #endif #ifdef CONFIG_ISA_DMA_API |