* [Qemu-devel] Question: cpu_physical_memory_map() and atomic test and set bit pattern
@ 2015-08-03 10:38 Andrey Smetanin
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From: Andrey Smetanin @ 2015-08-03 10:38 UTC (permalink / raw)
To: qemu-devel
Hello, QEMU Developers!
cpu_physical_memory_map() calls directly addess_space_map() which has
comment "Use only for reads OR writes - not for read-modify-write
operations."
Why there is such restriction (only read or write access) in
addess_space_map()/cpu_physical_memory_map() ?
How to transparently atomically test and set bit of guest memory inside
QEMU host?
Is there any API for that pattern ? Or may I use cpu_physical_memory_map
with is_write = 1 for that safely ?
Thanks,
Andrey
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2015-08-03 10:38 [Qemu-devel] Question: cpu_physical_memory_map() and atomic test and set bit pattern Andrey Smetanin
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