| Message ID | 20250313163903.1738581-1-pierrick.bouvier@linaro.org (mailing list archive) |
|---|---|
| Headers | show |
| Series | make system memory API available for common code | expand |
Hi, patch 12 (adding xen stubs, so would need someone from hw/xen) and 15 are missing reviews. Thanks, Pierrick On 3/13/25 09:38, Pierrick Bouvier wrote: > The main goal of this series is to be able to call any memory ld/st function > from code that is *not* target dependent. As a positive side effect, we can > turn related system compilation units into common code. > > The first 5 patches remove dependency of memory API to cpu headers and remove > dependency to target specific code. This could be a series on its own, but it's > great to be able to turn system memory compilation units into common code to > make sure it can't regress, and prove it achieves the desired result. > > The next patches remove more dependencies on cpu headers (exec-all, > memory-internal, ram_addr). > Then, we add access to a needed function from kvm, some xen stubs, and we > finally can turn our compilation units into common code. > > Every commit was tested to build correctly for all targets (on windows, linux, > macos), and the series was fully tested by running all tests we have (linux, > x86_64 host). > > v2: > - reorder first commits (tswap change first, so memory cached functions can use it) > - move st/ld*_p functions to tswap instead of bswap > - add define for target_words_bigendian when COMPILING_PER_TARGET, equals to > TARGET_BIG_ENDIAN (avoid overhead in target code) > - rewrite devend_memop > - remove useless exec-all.h in concerned patch > - extract devend_big_endian function to reuse in system/memory.c > - rewrite changes to system/memory.c > > v3: > - move devend functions to memory_internal.h > - completed description for commits removing cpu.h dependency > > v4: > - rebase on top of master > * missing include in 'codebase: prepare to remove cpu.h from exec/exec-all.h' > * meson build conflict > > Pierrick Bouvier (17): > exec/tswap: target code can use TARGET_BIG_ENDIAN instead of > target_words_bigendian() > exec/tswap: implement {ld,st}.*_p as functions instead of macros > exec/memory_ldst: extract memory_ldst declarations from cpu-all.h > exec/memory_ldst_phys: extract memory_ldst_phys declarations from > cpu-all.h > exec/memory.h: make devend_memop "target defines" agnostic > codebase: prepare to remove cpu.h from exec/exec-all.h > exec/exec-all: remove dependency on cpu.h > exec/memory-internal: remove dependency on cpu.h > exec/ram_addr: remove dependency on cpu.h > system/kvm: make kvm_flush_coalesced_mmio_buffer() accessible for > common code > exec/ram_addr: call xen_hvm_modified_memory only if xen is enabled > hw/xen: add stubs for various functions > system/physmem: compilation unit is now common to all targets > include/exec/memory: extract devend_big_endian from devend_memop > include/exec/memory: move devend functions to memory-internal.h > system/memory: make compilation unit common > system/ioport: make compilation unit common > > include/exec/cpu-all.h | 66 ----------------------- > include/exec/exec-all.h | 1 - > include/exec/memory-internal.h | 21 +++++++- > include/exec/memory.h | 30 ++++------- > include/exec/ram_addr.h | 11 ++-- > include/exec/tswap.h | 81 +++++++++++++++++++++++++++-- > include/system/kvm.h | 6 +-- > include/tcg/tcg-op.h | 1 + > target/ppc/helper_regs.h | 2 + > include/exec/memory_ldst.h.inc | 4 -- > include/exec/memory_ldst_phys.h.inc | 5 +- > cpu-target.c | 1 + > hw/ppc/spapr_nested.c | 1 + > hw/sh4/sh7750.c | 1 + > hw/xen/xen_stubs.c | 56 ++++++++++++++++++++ > page-vary-target.c | 2 +- > system/ioport.c | 1 - > system/memory.c | 17 ++---- > target/ppc/tcg-excp_helper.c | 1 + > target/riscv/bitmanip_helper.c | 2 +- > hw/xen/meson.build | 3 ++ > system/meson.build | 6 +-- > 22 files changed, 193 insertions(+), 126 deletions(-) > create mode 100644 hw/xen/xen_stubs.c >
The main goal of this series is to be able to call any memory ld/st function from code that is *not* target dependent. As a positive side effect, we can turn related system compilation units into common code. The first 5 patches remove dependency of memory API to cpu headers and remove dependency to target specific code. This could be a series on its own, but it's great to be able to turn system memory compilation units into common code to make sure it can't regress, and prove it achieves the desired result. The next patches remove more dependencies on cpu headers (exec-all, memory-internal, ram_addr). Then, we add access to a needed function from kvm, some xen stubs, and we finally can turn our compilation units into common code. Every commit was tested to build correctly for all targets (on windows, linux, macos), and the series was fully tested by running all tests we have (linux, x86_64 host). v2: - reorder first commits (tswap change first, so memory cached functions can use it) - move st/ld*_p functions to tswap instead of bswap - add define for target_words_bigendian when COMPILING_PER_TARGET, equals to TARGET_BIG_ENDIAN (avoid overhead in target code) - rewrite devend_memop - remove useless exec-all.h in concerned patch - extract devend_big_endian function to reuse in system/memory.c - rewrite changes to system/memory.c v3: - move devend functions to memory_internal.h - completed description for commits removing cpu.h dependency v4: - rebase on top of master * missing include in 'codebase: prepare to remove cpu.h from exec/exec-all.h' * meson build conflict Pierrick Bouvier (17): exec/tswap: target code can use TARGET_BIG_ENDIAN instead of target_words_bigendian() exec/tswap: implement {ld,st}.*_p as functions instead of macros exec/memory_ldst: extract memory_ldst declarations from cpu-all.h exec/memory_ldst_phys: extract memory_ldst_phys declarations from cpu-all.h exec/memory.h: make devend_memop "target defines" agnostic codebase: prepare to remove cpu.h from exec/exec-all.h exec/exec-all: remove dependency on cpu.h exec/memory-internal: remove dependency on cpu.h exec/ram_addr: remove dependency on cpu.h system/kvm: make kvm_flush_coalesced_mmio_buffer() accessible for common code exec/ram_addr: call xen_hvm_modified_memory only if xen is enabled hw/xen: add stubs for various functions system/physmem: compilation unit is now common to all targets include/exec/memory: extract devend_big_endian from devend_memop include/exec/memory: move devend functions to memory-internal.h system/memory: make compilation unit common system/ioport: make compilation unit common include/exec/cpu-all.h | 66 ----------------------- include/exec/exec-all.h | 1 - include/exec/memory-internal.h | 21 +++++++- include/exec/memory.h | 30 ++++------- include/exec/ram_addr.h | 11 ++-- include/exec/tswap.h | 81 +++++++++++++++++++++++++++-- include/system/kvm.h | 6 +-- include/tcg/tcg-op.h | 1 + target/ppc/helper_regs.h | 2 + include/exec/memory_ldst.h.inc | 4 -- include/exec/memory_ldst_phys.h.inc | 5 +- cpu-target.c | 1 + hw/ppc/spapr_nested.c | 1 + hw/sh4/sh7750.c | 1 + hw/xen/xen_stubs.c | 56 ++++++++++++++++++++ page-vary-target.c | 2 +- system/ioport.c | 1 - system/memory.c | 17 ++---- target/ppc/tcg-excp_helper.c | 1 + target/riscv/bitmanip_helper.c | 2 +- hw/xen/meson.build | 3 ++ system/meson.build | 6 +-- 22 files changed, 193 insertions(+), 126 deletions(-) create mode 100644 hw/xen/xen_stubs.c