accel/tcg: Pass the access_type to IOMMUMemoryRegion

[PATCH 0/2] accel/tcg: Pass the access_type to IOMMUMemoryRegion

Jim Shu posted 2 patches 4 days, 23 hours ago

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git fetch https://github.com/patchew-project/qemu tags/patchew/20260202075358.2137740-1-jim.shu@sifive.com

Maintainers: Richard Henderson <richard.henderson@linaro.org>, Paolo Bonzini <pbonzini@redhat.com>, "Philippe Mathieu-Daudé" <philmd@linaro.org>, Peter Xu <peterx@redhat.com>, Michael Rolnik <mrolnik@gmail.com>, Helge Deller <deller@gmx.de>, Eduardo Habkost <eduardo@habkost.net>, Song Gao <gaosong@loongson.cn>, Laurent Vivier <laurent@vivier.eu>, "Edgar E. Iglesias" <edgar.iglesias@gmail.com>, Aurelien Jarno <aurelien@aurel32.net>, Jiaxun Yang <jiaxun.yang@flygoat.com>, Aleksandar Rikalo <arikalo@gmail.com>, Stafford Horne <shorne@gmail.com>, Nicholas Piggin <npiggin@gmail.com>, Chinmay Rath <rathc@linux.ibm.com>, Palmer Dabbelt <palmer@dabbelt.com>, Alistair Francis <alistair.francis@wdc.com>, Weiwei Li <liwei1518@gmail.com>, Daniel Henrique Barboza <dbarboza@ventanamicro.com>, Liu Zhiwei <zhiwei_liu@linux.alibaba.com>, Yoshinori Sato <yoshinori.sato@nifty.com>, Ilya Leoshkevich <iii@linux.ibm.com>, David Hildenbrand <david@kernel.org>, Thomas Huth <thuth@redhat.com>, Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>, Artyom Tarasenko <atar4qemu@gmail.com>, Bastian Koppelmann <kbastian@rumtueddeln.de>, Max Filippov <jcmvbkbc@gmail.com>

accel/tcg/cputlb.c                   | 17 ++++++++++-------
include/accel/tcg/iommu.h            |  3 ++-
include/exec/cputlb.h                | 11 +++++++----
system/physmem.c                     | 16 +++++++++++-----
target/alpha/helper.c                |  2 +-
target/avr/helper.c                  |  2 +-
target/hppa/mem_helper.c             |  1 -
target/i386/tcg/system/excp_helper.c |  3 ++-
target/loongarch/tcg/tlb_helper.c    |  2 +-
target/m68k/helper.c                 | 10 +++++++---
target/microblaze/helper.c           |  8 ++++----
target/mips/tcg/system/tlb_helper.c  |  4 ++--
target/openrisc/mmu.c                |  2 +-
target/ppc/mmu_helper.c              |  2 +-
target/riscv/cpu_helper.c            |  2 +-
target/rx/cpu.c                      |  3 ++-
target/s390x/tcg/excp_helper.c       |  2 +-
target/sh4/helper.c                  |  2 +-
target/sparc/mmu_helper.c            |  6 +++---
target/tricore/helper.c              |  2 +-
target/xtensa/helper.c               |  3 ++-
21 files changed, 61 insertions(+), 42 deletions(-)

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[PATCH 0/2] accel/tcg: Pass the access_type to IOMMUMemoryRegion

Posted by Jim Shu 4 days, 23 hours ago

Since RISC-V wgChecker [1] could permit the access in RO/WO permission, the
IOMMUMemoryRegion could return different section for read & write
access. To support this kind of IOMMUMemoryRegion in the path of CPU access,
address_space_translate*() should also translate access_type to iommu_flags
abd pass to IOMMUMemoryRegion. Thus, IOMMUMemoryRegion can return the 
correct section of specified access_type.

This patch is based on
"[PATCH v2 0/3] Fix iotlb_to_section() for different AddressSpace.".
Both RISC-V wgChecker [1] and RISC-V IOPMP [2] devices require this
feature.

[1] RISC-V WG:
https://patchew.org/QEMU/20251021155548.584543-1-jim.shu@sifive.com/
[2] RISC-V IOPMP:
https://patchew.org/QEMU/20250312093735.1517740-1-ethan84@andestech.com/

Based-on: <20260128152348.2095427-1-jim.shu@sifive.com>

Jim Shu (2):
  accel/tcg: Pass access_type as an argument of tlb_set_page*()
  accel/tcg: address_space_translate*() will pass the correct
    iommu_flags

 accel/tcg/cputlb.c                   | 17 ++++++++++-------
 include/accel/tcg/iommu.h            |  3 ++-
 include/exec/cputlb.h                | 11 +++++++----
 system/physmem.c                     | 16 +++++++++++-----
 target/alpha/helper.c                |  2 +-
 target/avr/helper.c                  |  2 +-
 target/hppa/mem_helper.c             |  1 -
 target/i386/tcg/system/excp_helper.c |  3 ++-
 target/loongarch/tcg/tlb_helper.c    |  2 +-
 target/m68k/helper.c                 | 10 +++++++---
 target/microblaze/helper.c           |  8 ++++----
 target/mips/tcg/system/tlb_helper.c  |  4 ++--
 target/openrisc/mmu.c                |  2 +-
 target/ppc/mmu_helper.c              |  2 +-
 target/riscv/cpu_helper.c            |  2 +-
 target/rx/cpu.c                      |  3 ++-
 target/s390x/tcg/excp_helper.c       |  2 +-
 target/sh4/helper.c                  |  2 +-
 target/sparc/mmu_helper.c            |  6 +++---
 target/tricore/helper.c              |  2 +-
 target/xtensa/helper.c               |  3 ++-
 21 files changed, 61 insertions(+), 42 deletions(-)

-- 
2.43.0