[v1] Memory API patches for 2026-01-22

[PULL 12/31] system: Allow restricting the legacy ld/st_phys() 'native-endian' API

Philippe Mathieu-Daudé posted 31 patches 3 days, 1 hour ago

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Maintainers: Paolo Bonzini <pbonzini@redhat.com>, Gerd Hoffmann <kraxel@redhat.com>, "Marc-André Lureau" <marcandre.lureau@redhat.com>, Ari Sundholm <ari@tuxera.com>, Kevin Wolf <kwolf@redhat.com>, Hanna Reitz <hreitz@redhat.com>, Xie Yongji <xieyongji@bytedance.com>, "Michael S. Tsirkin" <mst@redhat.com>, Stefano Garzarella <sgarzare@redhat.com>, Coiby Xu <Coiby.Xu@gmail.com>, Stefan Hajnoczi <stefanha@redhat.com>, "Denis V. Lunev" <den@openvz.org>, Laurent Vivier <laurent@vivier.eu>, Song Gao <gaosong@loongson.cn>, Bibo Mao <maobibo@loongson.cn>, Jiaxun Yang <jiaxun.yang@flygoat.com>, Thomas Huth <thuth@redhat.com>, Ani Sinha <anisinha@redhat.com>, Christian Schoenebeck <qemu_oss@crudebyte.com>, Greg Kurz <groug@kaod.org>, John Snow <jsnow@redhat.com>, Eduardo Habkost <eduardo@habkost.net>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, "Philippe Mathieu-Daudé" <philmd@linaro.org>, Yanan Wang <wangyanan55@huawei.com>, Zhao Liu <zhao1.liu@intel.com>, Pavel Pisa <pisa@cmp.felk.cvut.cz>, Francisco Iglesias <francisco.iglesias@amd.com>, Vikram Garhwal <vikram.garhwal@bytedance.com>, Jason Wang <jasowang@redhat.com>, Alistair Francis <alistair@alistair23.me>, "Edgar E. Iglesias" <edgar.iglesias@gmail.com>, Peter Maydell <peter.maydell@linaro.org>, Fam Zheng <fam@euphon.net>, Bin Meng <bmeng.cn@gmail.com>, Richard Henderson <richard.henderson@linaro.org>, Peter Xu <peterx@redhat.com>, Michael Roth <michael.roth@amd.com>, Kostiantyn Kostiuk <kkostiuk@redhat.com>, Marcelo Tosatti <mtosatti@redhat.com>, Igor Mammedov <imammedo@redhat.com>, Fabiano Rosas <farosas@suse.de>, "Cédric Le Goater" <clg@kaod.org>, Steven Lee <steven_lee@aspeedtech.com>, Troy Lee <leetroy@gmail.com>, Jamin Lin <jamin_lin@aspeedtech.com>, Andrew Jeffery <andrew@codeconstruct.com.au>, Joel Stanley <joel@jms.id.au>, Akihiko Odaki <odaki@rsg.ci.i.u-tokyo.ac.jp>, Sriram Yagnaraman <sriram.yagnaraman@ericsson.com>, Nicholas Piggin <npiggin@gmail.com>, Harsh Prateek Bora <harshpb@linux.ibm.com>, Tyrone Ting <kfting@nuvoton.com>, Hao Wu <wuhaotsh@google.com>, Stefan Berger <stefanb@linux.vnet.ibm.com>, Jeuk Kim <jeuk20.kim@samsung.com>, Eric Blake <eblake@redhat.com>, Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>

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[PULL 12/31] system: Allow restricting the legacy ld/st_phys() 'native-endian' API

Posted by Philippe Mathieu-Daudé 3 days, 1 hour ago

Guard the native endian APIs we want to remove by surrounding
them with TARGET_NOT_USING_LEGACY_NATIVE_ENDIAN_API #ifdef'ry.

Since all targets can check the definition, do not poison it.

Once a target gets cleaned we'll set the definition in the
target config, then the target won't be able to use the legacy
API anymore.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20260109165058.59144-15-philmd@linaro.org>
---
 include/system/memory_ldst_phys.h.inc | 2 ++
 scripts/make-config-poison.sh         | 1 +
 2 files changed, 3 insertions(+)

diff --git a/include/system/memory_ldst_phys.h.inc b/include/system/memory_ldst_phys.h.inc
index f4c91dc7a91..66bbd3061c2 100644
--- a/include/system/memory_ldst_phys.h.inc
+++ b/include/system/memory_ldst_phys.h.inc
@@ -31,8 +31,10 @@ static inline void glue(stb_phys, SUFFIX)(ARG1_DECL, hwaddr addr, uint8_t val)
                                     MEMTXATTRS_UNSPECIFIED, NULL);
 }
 
+#ifndef TARGET_NOT_USING_LEGACY_NATIVE_ENDIAN_API
 #define ENDIANNESS
 #include "system/memory_ldst_phys_endian.h.inc"
+#endif /* TARGET_NOT_USING_LEGACY_NATIVE_ENDIAN_API */
 
 #define ENDIANNESS  _le
 #include "system/memory_ldst_phys_endian.h.inc"
diff --git a/scripts/make-config-poison.sh b/scripts/make-config-poison.sh
index 937357b3531..b4d61e8bc9e 100755
--- a/scripts/make-config-poison.sh
+++ b/scripts/make-config-poison.sh
@@ -11,6 +11,7 @@ exec sed -n \
   -e '/CONFIG_USER_ONLY/d' \
   -e '/CONFIG_SOFTMMU/d' \
   -e '/TARGET_NOT_USING_LEGACY_LDST_PHYS_API/d' \
+  -e '/TARGET_NOT_USING_LEGACY_NATIVE_ENDIAN_API/d' \
   -e '/^#define / {' \
   -e    's///' \
   -e    's/ .*//' \
-- 
2.52.0