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authorMike Rapoport <rppt@linux.vnet.ibm.com>2018-10-26 15:05:02 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-10-26 16:25:20 -0700
commitddf63983576ac2520d13a49f03f2d382ac60e2c7 (patch)
treef3f8495e590448c362aa0d64d4240c0632a6498c /arch/um
parentbe6ec5b1eecf1c5e985831540b90a320a9ed3aa5 (diff)
um: switch to NO_BOOTMEM
Replace bootmem initialization with memblock_add and memblock_reserve calls and explicit initialization of {min,max}_low_pfn. Link: http://lkml.kernel.org/r/1533326330-31677-7-git-send-email-rppt@linux.vnet.ibm.com Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Acked-by: Richard Weinberger <richard@nod.at> Cc: Guan Xuetao <gxt@pku.edu.cn> Cc: Ley Foon Tan <ley.foon.tan@intel.com> Cc: Richard Kuo <rkuo@codeaurora.org> Cc: Rob Herring <robh@kernel.org> Cc: Michal Hocko <mhocko@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/um')
-rw-r--r--arch/um/Kconfig2
-rw-r--r--arch/um/kernel/physmem.c20
2 files changed, 11 insertions, 11 deletions
diff --git a/arch/um/Kconfig b/arch/um/Kconfig
index 6b9938919f0b..10c15b8853ae 100644
--- a/arch/um/Kconfig
+++ b/arch/um/Kconfig
@@ -12,6 +12,8 @@ config UML
select HAVE_UID16
select HAVE_FUTEX_CMPXCHG if FUTEX
select HAVE_DEBUG_KMEMLEAK
+ select HAVE_MEMBLOCK
+ select NO_BOOTMEM
select GENERIC_IRQ_SHOW
select GENERIC_CPU_DEVICES
select GENERIC_CLOCKEVENTS
diff --git a/arch/um/kernel/physmem.c b/arch/um/kernel/physmem.c
index 0eaec0e24767..296a91a04598 100644
--- a/arch/um/kernel/physmem.c
+++ b/arch/um/kernel/physmem.c
@@ -5,6 +5,7 @@
#include <linux/module.h>
#include <linux/bootmem.h>
+#include <linux/memblock.h>
#include <linux/mm.h>
#include <linux/pfn.h>
#include <asm/page.h>
@@ -80,23 +81,18 @@ void __init setup_physmem(unsigned long start, unsigned long reserve_end,
unsigned long len, unsigned long long highmem)
{
unsigned long reserve = reserve_end - start;
- unsigned long pfn = PFN_UP(__pa(reserve_end));
- unsigned long delta = (len - reserve) >> PAGE_SHIFT;
- unsigned long offset, bootmap_size;
- long map_size;
+ long map_size = len - reserve;
int err;
- offset = reserve_end - start;
- map_size = len - offset;
if(map_size <= 0) {
os_warn("Too few physical memory! Needed=%lu, given=%lu\n",
- offset, len);
+ reserve, len);
exit(1);
}
physmem_fd = create_mem_file(len + highmem);
- err = os_map_memory((void *) reserve_end, physmem_fd, offset,
+ err = os_map_memory((void *) reserve_end, physmem_fd, reserve,
map_size, 1, 1, 1);
if (err < 0) {
os_warn("setup_physmem - mapping %ld bytes of memory at 0x%p "
@@ -113,9 +109,11 @@ void __init setup_physmem(unsigned long start, unsigned long reserve_end,
os_write_file(physmem_fd, __syscall_stub_start, PAGE_SIZE);
os_fsync_file(physmem_fd);
- bootmap_size = init_bootmem(pfn, pfn + delta);
- free_bootmem(__pa(reserve_end) + bootmap_size,
- len - bootmap_size - reserve);
+ memblock_add(__pa(start), len + highmem);
+ memblock_reserve(__pa(start), reserve);
+
+ min_low_pfn = PFN_UP(__pa(reserve_end));
+ max_low_pfn = min_low_pfn + (map_size >> PAGE_SHIFT);
}
int phys_mapping(unsigned long phys, unsigned long long *offset_out)