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Check memory map when choosing address

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-04-21 10:02:05 +02:00
parent 5490ddc18b
commit ba2f141cb5
1 changed files with 40 additions and 6 deletions
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44
lib/relocator.c
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@ -21,6 +21,7 @@
#include <grub/mm_private.h>
#include <grub/misc.h>
#include <grub/cache.h>
#include <grub/memory.h>
struct grub_relocator
{
@ -63,6 +64,7 @@ struct grub_relocator_extra_block
grub_addr_t end;
};
#if GRUB_RELOCATOR_HAVE_FIRMWARE_REQUESTS
struct grub_relocator_fw_leftover
{
struct grub_relocator_fw_leftover *next;
@ -72,6 +74,8 @@ struct grub_relocator_fw_leftover
};
struct grub_relocator_fw_leftover *leftovers;
#endif
struct grub_relocator_extra_block *extra_blocks;
struct grub_relocator *
@ -220,6 +224,7 @@ allocate_inreg (grub_addr_t addr, grub_size_t size,
}
}
#if GRUB_RELOCATOR_HAVE_FIRMWARE_REQUESTS
static void
check_leftover (struct grub_relocator_fw_leftover *lo)
{
@ -233,6 +238,7 @@ check_leftover (struct grub_relocator_fw_leftover *lo)
if (lo->next)
lo->next->prev = lo->prev;
}
#endif
static void
free_subchunk (const struct grub_relocator_subchunk *subchu)
@ -923,7 +929,10 @@ malloc_in_range (struct grub_relocator *rel,
curschu->size = alloc_end - alloc_start;
if (typepre == CHUNK_TYPE_REGION_START)
if (!oom && (typepre == CHUNK_TYPE_REGION_START
|| typepre == CHUNK_TYPE_FIRMWARE))
#if GRUB_RELOCATOR_HAVE_FIRMWARE_REQUESTS
|| typepre == CHUNK_TYPE_FIRMWARE
#endif
))
{
struct grub_relocator_extra_block *ne;
ne = grub_malloc (sizeof (*ne));
@ -1282,11 +1291,36 @@ grub_relocator_alloc_chunk_align (struct grub_relocator *rel, void **src,
}
while (0);
/* FIXME: check memory map. */
{
int found = 0;
auto int NESTED_FUNC_ATTR hook (grub_uint64_t, grub_uint64_t, grub_uint32_t);
int NESTED_FUNC_ATTR hook (grub_uint64_t addr, grub_uint64_t sz, grub_uint32_t type)
{
grub_uint64_t candidate;
if (type != GRUB_MACHINE_MEMORY_AVAILABLE)
return 0;
candidate = ALIGN_UP (addr, align);
if (candidate < min_addr)
candidate = min_addr;
if (candidate + size >= addr + sz
|| candidate > ALIGN_DOWN (max_addr, align))
return 0;
if (preference == GRUB_RELOCATOR_PREFERENCE_HIGH)
chunk->target = ALIGN_DOWN (max_addr, align);
else
chunk->target = ALIGN_UP (min_addr, align);
candidate = ALIGN_DOWN (addr + sz - size, align);
if (!found || (preference == GRUB_RELOCATOR_PREFERENCE_HIGH
&& candidate > chunk->target))
chunk->target = candidate;
if (!found || (preference == GRUB_RELOCATOR_PREFERENCE_LOW
&& candidate < chunk->target))
chunk->target = candidate;
found = 1;
return 0;
}
grub_machine_mmap_iterate (hook);
if (!found)
return grub_error (GRUB_ERR_BAD_OS, "couldn't find suitable memory target");
}
while (1)
{
struct grub_relocator_chunk *chunk2;