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ram: Split host_from_stream_offset() into two helper functions

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Split host_from_stream_offset() into two parts:
One is to get ram block, which the block idstr may be get from migration
stream, the other is to get hva (host) address from block and the offset.
Besides, we will do the check working in a new helper offset_in_ramblock().

Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Message-Id: <1452829066-9764-2-git-send-email-zhang.zhanghailiang@huawei.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
This commit is contained in:
zhanghailiang 2016-01-15 11:37:41 +08:00 • committed by Amit Shah
parent d38ea87ac5
commit 4c4bad4861
2 changed files with 31 additions and 17 deletions
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8
include/exec/ram_addr.h
View file

@ -38,10 +38,14 @@ struct RAMBlock {
int fd;
};
static inline bool offset_in_ramblock(RAMBlock *b, ram_addr_t offset)
{
return (b && b->host && offset < b->used_length) ? true : false;
}
static inline void *ramblock_ptr(RAMBlock *block, ram_addr_t offset)
{
assert(offset < block->used_length);
assert(block->host);
assert(offset_in_ramblock(block, offset));
return (char *)block->host + offset;
}