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exec: hide mr->ram_addr from qemu_get_ram_ptr users

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Let users of qemu_get_ram_ptr and qemu_ram_ptr_length pass in an
address that is relative to the MemoryRegion.  This basically means
what address_space_translate returns.

Because the semantics of the second parameter change, rename the
function to qemu_map_ram_ptr.

Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2016-02-22 11:02:12 +01:00
parent 07bdaa4196
commit 0878d0e11b
4 changed files with 31 additions and 54 deletions
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19
scripts/dump-guest-memory.py
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@ -328,23 +328,10 @@ def qlist_foreach(head, field_str):
yield var
def qemu_get_ram_block(ram_addr):
"""Returns the RAMBlock struct to which the given address belongs."""
ram_blocks = gdb.parse_and_eval("ram_list.blocks")
for block in qlist_foreach(ram_blocks, "next"):
if (ram_addr - block["offset"]) < block["used_length"]:
return block
raise gdb.GdbError("Bad ram offset %x" % ram_addr)
def qemu_get_ram_ptr(ram_addr):
def qemu_map_ram_ptr(block, offset):
"""Returns qemu vaddr for given guest physical address."""
block = qemu_get_ram_block(ram_addr)
return block["host"] + (ram_addr - block["offset"])
return block["host"] + offset
def memory_region_get_ram_ptr(memory_region):
@ -352,7 +339,7 @@ def memory_region_get_ram_ptr(memory_region):
return (memory_region_get_ram_ptr(memory_region["alias"].dereference())
+ memory_region["alias_offset"])
return qemu_get_ram_ptr(memory_region["ram_block"]["offset"])
return qemu_map_ram_ptr(memory_region["ram_block"], 0)
def get_guest_phys_blocks():