diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Kconfig.debug | 5 | ||||
| -rw-r--r-- | lib/swiotlb.c | 3 |
2 files changed, 4 insertions, 4 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 156822e3cc79..80598cfd728c 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -32,7 +32,7 @@ config MAGIC_SYSRQ config LOG_BUF_SHIFT int "Kernel log buffer size (16 => 64KB, 17 => 128KB)" if DEBUG_KERNEL range 12 21 - default 17 if ARCH_S390 + default 17 if S390 default 16 if X86_NUMAQ || IA64 default 15 if SMP default 14 @@ -172,7 +172,8 @@ config DEBUG_VM bool "Debug VM" depends on DEBUG_KERNEL help - Enable this to debug the virtual-memory system. + Enable this to turn on extended checks in the virtual-memory system + that may impact performance. If unsure, say N. diff --git a/lib/swiotlb.c b/lib/swiotlb.c index 1ff8dcebf7c6..3b482052f403 100644 --- a/lib/swiotlb.c +++ b/lib/swiotlb.c @@ -142,8 +142,7 @@ swiotlb_init_with_default_size (size_t default_size) /* * Get IO TLB memory from the low pages */ - io_tlb_start = alloc_bootmem_low_pages_limit(io_tlb_nslabs * - (1 << IO_TLB_SHIFT), 0x100000000); + io_tlb_start = alloc_bootmem_low_pages(io_tlb_nslabs * (1 << IO_TLB_SHIFT)); if (!io_tlb_start) panic("Cannot allocate SWIOTLB buffer"); io_tlb_end = io_tlb_start + io_tlb_nslabs * (1 << IO_TLB_SHIFT); |