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Signed-off-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Thomas Huth Reviewed-by: Richard Henderson --- include/system/memory.h | 9 +++++++++ system/physmem.c | 21 ++++++++++++--------- 2 files changed, 21 insertions(+), 9 deletions(-) diff --git a/include/system/memory.h b/include/system/memory.h index aa85fc27a10..1b2b0e5ce1e 100644 --- a/include/system/memory.h +++ b/include/system/memory.h @@ -3029,6 +3029,15 @@ static inline MemoryRegion *address_space_translate(= AddressSpace *as, bool address_space_access_valid(AddressSpace *as, hwaddr addr, hwaddr len, bool is_write, MemTxAttrs attrs); =20 +/** + * address_space_is_io: check whether an guest physical addresses + * whithin an address space is I/O memory. + * + * @as: #AddressSpace to be accessed + * @addr: address within that address space + */ +bool address_space_is_io(AddressSpace *as, hwaddr addr); + /* address_space_map: map a physical memory region into a host virtual add= ress * * May map a subset of the requested range, given by and returned in @plen. diff --git a/system/physmem.c b/system/physmem.c index 225ab817883..c2829ab407a 100644 --- a/system/physmem.c +++ b/system/physmem.c @@ -3358,6 +3358,17 @@ bool address_space_access_valid(AddressSpace *as, hw= addr addr, return flatview_access_valid(fv, addr, len, is_write, attrs); } =20 +bool address_space_is_io(AddressSpace *as, hwaddr addr) +{ + MemoryRegion *mr; + + RCU_READ_LOCK_GUARD(); + mr =3D address_space_translate(as, addr, &addr, NULL, false, + MEMTXATTRS_UNSPECIFIED); + + return !(memory_region_is_ram(mr) || memory_region_is_romd(mr)); +} + static hwaddr flatview_extend_translation(FlatView *fv, hwaddr addr, hwaddr target_len, @@ -3754,15 +3765,7 @@ int cpu_memory_rw_debug(CPUState *cpu, vaddr addr, =20 bool cpu_physical_memory_is_io(hwaddr phys_addr) { - MemoryRegion*mr; - hwaddr l =3D 1; - - RCU_READ_LOCK_GUARD(); - mr =3D address_space_translate(&address_space_memory, - phys_addr, &phys_addr, &l, false, - MEMTXATTRS_UNSPECIFIED); - - return !(memory_region_is_ram(mr) || memory_region_is_romd(mr)); + return address_space_is_io(&address_space_memory, phys_addr); } =20 int qemu_ram_foreach_block(RAMBlockIterFunc func, void *opaque) --=20 2.51.0