Message ID | 20220728210715.17214-1-palmer@rivosinc.com (mailing list archive) |
---|---|
State | Accepted |
Commit | 06267eb2decaa6baac81bbd882265a8e7782dba4 |
Delegated to: | Palmer Dabbelt |
Headers | show |
Series | doc: RISC-V: Document that misaligned accesses are supported | expand |
On Thu, 28 Jul 2022 14:07:15 -0700, Palmer Dabbelt wrote: > From: Palmer Dabbelt <palmer@rivosinc.com> > > The RISC-V ISA manual used to mandate that misaligned accesses were > supported in user mode, but that requirement was removed in 2018 via > riscv-isa-manual commit 61cadb9 ("Provide new description of misaligned > load/store behavior compatible with privileged architecture."). Since > the Linux uABI was already frozen at that point it's just been demoted > to part of the uABI, but that was never written down. > > [...] Applied, thanks! [1/1] doc: RISC-V: Document that misaligned accesses are supported commit: 06267eb2decaa6baac81bbd882265a8e7782dba4 Best regards,
diff --git a/Documentation/riscv/index.rst b/Documentation/riscv/index.rst index e23b876ad6eb..2e5b18fbb145 100644 --- a/Documentation/riscv/index.rst +++ b/Documentation/riscv/index.rst @@ -8,6 +8,7 @@ RISC-V architecture boot-image-header vm-layout patch-acceptance + uabi features diff --git a/Documentation/riscv/uabi.rst b/Documentation/riscv/uabi.rst new file mode 100644 index 000000000000..21a82cfb6c4d --- /dev/null +++ b/Documentation/riscv/uabi.rst @@ -0,0 +1,6 @@ +.. SPDX-License-Identifier: GPL-2.0 + +RISC-V Linux User ABI +===================== + +Misaligned accesses are supported in userspace, but they may perform poorly.