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Iglesias" , xen-devel@lists.xenproject.org, Stefano Garzarella , David Woodhouse , Sunil Muthuswamy , Richard Henderson , Stefano Stabellini , Matthew Rosato , qemu-s390x@nongnu.org, Paul Durrant , "Michael S. Tsirkin" , Christian Borntraeger , Anthony PERARD , Jason Herne , Paolo Bonzini , Thomas Huth , Eric Farman Subject: [PATCH v3 03/18] system/memory: Factor address_space_is_io() out Date: Tue, 30 Sep 2025 10:21:10 +0200 Message-ID: <20250930082126.28618-4-philmd@linaro.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20250930082126.28618-1-philmd@linaro.org> References: <20250930082126.28618-1-philmd@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1759220526254116600 Factor address_space_is_io() out of cpu_physical_memory_is_io(). Signed-off-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Thomas Huth --- 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 3e5bf3ef05e..546c643961d 100644 --- a/include/system/memory.h +++ b/include/system/memory.h @@ -3030,6 +3030,15 @@ 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 86422f294e2..84d7754ccab 100644 --- a/system/physmem.c +++ b/system/physmem.c @@ -3359,6 +3359,17 @@ 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, @@ -3755,15 +3766,7 @@ 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