Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
memblock: Permit existing reserved regions to be marked RSRV_KERN
Permit existing memblock reservations to be marked as RSRV_KERN. This
will be used by the EFI code on x86 to distinguish between reservations
of boot services data regions that have actual significance to the
kernel and regions that are reserved temporarily to work around buggy
firmware.
Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
+16
+1
include/linux/memblock.h
+1
include/linux/memblock.h
···
155
155
int memblock_mark_nomap(phys_addr_t base, phys_addr_t size);
156
156
int memblock_clear_nomap(phys_addr_t base, phys_addr_t size);
157
157
int memblock_reserved_mark_noinit(phys_addr_t base, phys_addr_t size);
158
+
int memblock_reserved_mark_kern(phys_addr_t base, phys_addr_t size);
158
159
int memblock_mark_kho_scratch(phys_addr_t base, phys_addr_t size);
159
160
int memblock_clear_kho_scratch(phys_addr_t base, phys_addr_t size);
160
161
+15
mm/memblock.c
+15
mm/memblock.c
···
1116
1116
}
1117
1117
1118
1118
/**
1119
+
* memblock_reserved_mark_kern - Mark a reserved memory region with flag
1120
+
* MEMBLOCK_RSRV_KERN
1121
+
*
1122
+
* @base: the base phys addr of the region
1123
+
* @size: the size of the region
1124
+
*
1125
+
* Return: 0 on success, -errno on failure.
1126
+
*/
1127
+
int __init_memblock memblock_reserved_mark_kern(phys_addr_t base, phys_addr_t size)
1128
+
{
1129
+
return memblock_setclr_flag(&memblock.reserved, base, size, 1,
1130
+
MEMBLOCK_RSRV_KERN);
1131
+
}
1132
+
1133
+
/**
1119
1134
* memblock_mark_kho_scratch - Mark a memory region as MEMBLOCK_KHO_SCRATCH.
1120
1135
* @base: the base phys addr of the region
1121
1136
* @size: the size of the region