[PATCH 06/15] powerpc: fadamp: simplify fadump_reserve_crash_area()
From: Mike Rapoport <rppt@kernel.org>
Date: 2020-07-28 05:13:15
Also in:
linux-iommu, linux-mips, linux-mm, linux-riscv, linux-s390, linux-sh, linuxppc-dev, lkml, sparclinux
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Linus Torvalds
From: Mike Rapoport <redacted> fadump_reserve_crash_area() reserves memory from a specified base address till the end of the RAM. Replace iteration through the memblock.memory with a single call to memblock_reserve() with appropriate that will take care of proper memory reservation. Signed-off-by: Mike Rapoport <redacted> --- arch/powerpc/kernel/fadump.c | 20 +------------------- 1 file changed, 1 insertion(+), 19 deletions(-)
diff --git a/arch/powerpc/kernel/fadump.c b/arch/powerpc/kernel/fadump.c
index 78ab9a6ee6ac..2446a61e3c25 100644
--- a/arch/powerpc/kernel/fadump.c
+++ b/arch/powerpc/kernel/fadump.c@@ -1658,25 +1658,7 @@ int __init fadump_reserve_mem(void) /* Preserve everything above the base address */ static void __init fadump_reserve_crash_area(u64 base) { - struct memblock_region *reg; - u64 mstart, msize; - - for_each_memblock(memory, reg) { - mstart = reg->base; - msize = reg->size; - - if ((mstart + msize) < base) - continue; - - if (mstart < base) { - msize -= (base - mstart); - mstart = base; - } - - pr_info("Reserving %lluMB of memory at %#016llx for preserving crash data", - (msize >> 20), mstart); - memblock_reserve(mstart, msize); - } + memblock_reserve(base, memblock_end_of_DRAM() - base); } unsigned long __init arch_reserved_kernel_pages(void)
--
2.26.2
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