From: Miguel Ojeda <ojeda@kernel.org>
To: Linus Torvalds <torvalds@linux-foundation.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-fsdevel@vger.kernel.org, patches@lists.linux.dev,
"Jarkko Sakkinen" <jarkko@kernel.org>,
"Miguel Ojeda" <ojeda@kernel.org>,
"Alex Gaynor" <alex.gaynor@gmail.com>,
"Wedson Almeida Filho" <wedsonaf@google.com>,
"David Gow" <davidgow@google.com>,
"Boqun Feng" <boqun.feng@gmail.com>,
"Gary Guo" <gary@garyguo.net>,
"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
"Jonathan Corbet" <corbet@lwn.net>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Ingo Molnar" <mingo@redhat.com>,
"Borislav Petkov" <bp@alien8.de>,
"Dave Hansen" <dave.hansen@linux.intel.com>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
linux-doc@vger.kernel.org
Subject: [PATCH v9 25/27] x86: enable initial Rust support
Date: Fri, 5 Aug 2022 17:42:10 +0200 [thread overview]
Message-ID: <20220805154231.31257-26-ojeda@kernel.org> (raw)
In-Reply-To: <20220805154231.31257-1-ojeda@kernel.org>
Note that only x86_64 is covered and not all features nor mitigations
are handled, but it is enough as a starting point and showcases
the basics needed to add Rust support for a new architecture.
Co-developed-by: Alex Gaynor <alex.gaynor@gmail.com>
Signed-off-by: Alex Gaynor <alex.gaynor@gmail.com>
Co-developed-by: Wedson Almeida Filho <wedsonaf@google.com>
Signed-off-by: Wedson Almeida Filho <wedsonaf@google.com>
Co-developed-by: David Gow <davidgow@google.com>
Signed-off-by: David Gow <davidgow@google.com>
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
---
Documentation/rust/arch-support.rst | 1 +
arch/x86/Kconfig | 1 +
arch/x86/Makefile | 10 ++++++++++
scripts/generate_rust_target.rs | 15 +++++++++++++--
4 files changed, 25 insertions(+), 2 deletions(-)
diff --git a/Documentation/rust/arch-support.rst b/Documentation/rust/arch-support.rst
index 1152e0fbdad0..6982b63775da 100644
--- a/Documentation/rust/arch-support.rst
+++ b/Documentation/rust/arch-support.rst
@@ -15,4 +15,5 @@ support corresponds to ``S`` values in the ``MAINTAINERS`` file.
============ ================ ==============================================
Architecture Level of support Constraints
============ ================ ==============================================
+``x86`` Maintained ``x86_64`` only.
============ ================ ==============================================
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 52a7f91527fe..4d5a3f256cbc 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -258,6 +258,7 @@ config X86
select HAVE_STATIC_CALL_INLINE if HAVE_OBJTOOL
select HAVE_PREEMPT_DYNAMIC_CALL
select HAVE_RSEQ
+ select HAVE_RUST if X86_64
select HAVE_SYSCALL_TRACEPOINTS
select HAVE_UACCESS_VALIDATION if HAVE_OBJTOOL
select HAVE_UNSTABLE_SCHED_CLOCK
diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index 7854685c5f25..bab595003f07 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -68,6 +68,7 @@ export BITS
# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53383
#
KBUILD_CFLAGS += -mno-sse -mno-mmx -mno-sse2 -mno-3dnow -mno-avx
+KBUILD_RUSTFLAGS += -Ctarget-feature=-sse,-sse2,-sse3,-ssse3,-sse4.1,-sse4.2,-avx,-avx2
ifeq ($(CONFIG_X86_KERNEL_IBT),y)
#
@@ -155,8 +156,17 @@ else
cflags-$(CONFIG_GENERIC_CPU) += -mtune=generic
KBUILD_CFLAGS += $(cflags-y)
+ rustflags-$(CONFIG_MK8) += -Ctarget-cpu=k8
+ rustflags-$(CONFIG_MPSC) += -Ctarget-cpu=nocona
+ rustflags-$(CONFIG_MCORE2) += -Ctarget-cpu=core2
+ rustflags-$(CONFIG_MATOM) += -Ctarget-cpu=atom
+ rustflags-$(CONFIG_GENERIC_CPU) += -Ztune-cpu=generic
+ KBUILD_RUSTFLAGS += $(rustflags-y)
+
KBUILD_CFLAGS += -mno-red-zone
KBUILD_CFLAGS += -mcmodel=kernel
+ KBUILD_RUSTFLAGS += -Cno-redzone=y
+ KBUILD_RUSTFLAGS += -Ccode-model=kernel
endif
#
diff --git a/scripts/generate_rust_target.rs b/scripts/generate_rust_target.rs
index 7256c9606cf0..3c6cbe2b278d 100644
--- a/scripts/generate_rust_target.rs
+++ b/scripts/generate_rust_target.rs
@@ -148,8 +148,19 @@ fn main() {
let mut ts = TargetSpec::new();
// `llvm-target`s are taken from `scripts/Makefile.clang`.
- if cfg.has("DUMMY_ARCH") {
- ts.push("arch", "dummy_arch");
+ if cfg.has("X86_64") {
+ ts.push("arch", "x86_64");
+ ts.push(
+ "data-layout",
+ "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128",
+ );
+ let mut features = "-3dnow,-3dnowa,-mmx,+soft-float".to_string();
+ if cfg.has("RETPOLINE") {
+ features += ",+retpoline-external-thunk";
+ }
+ ts.push("features", features);
+ ts.push("llvm-target", "x86_64-linux-gnu");
+ ts.push("target-pointer-width", "64");
} else {
panic!("Unsupported architecture");
}
--
2.37.1
next prev parent reply other threads:[~2022-08-05 15:47 UTC|newest]
Thread overview: 102+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-05 15:41 [PATCH v9 00/27] Rust support Miguel Ojeda
2022-08-05 15:41 ` [PATCH v9 01/27] kallsyms: use `sizeof` instead of hardcoded size Miguel Ojeda
2022-08-05 16:48 ` Geert Stappers
2022-08-05 18:46 ` Miguel Ojeda
2022-08-05 22:40 ` Konstantin Shelekhin
2022-08-17 19:36 ` Kees Cook
2022-08-18 9:03 ` Konstantin Shelekhin
2022-08-18 16:03 ` Kees Cook
2022-09-27 12:48 ` Miguel Ojeda
2022-08-05 15:41 ` [PATCH v9 02/27] kallsyms: avoid hardcoding buffer size Miguel Ojeda
2022-08-17 19:37 ` Kees Cook
2022-08-18 16:50 ` Geert Stappers
2022-08-05 15:41 ` [PATCH v9 03/27] kallsyms: add static relationship between `KSYM_NAME_LEN{,_BUFFER}` Miguel Ojeda
2022-08-17 19:39 ` Kees Cook
2022-08-17 19:50 ` Boqun Feng
2022-08-17 20:31 ` Kees Cook
2022-08-17 20:45 ` Miguel Ojeda
2022-08-05 15:41 ` [PATCH v9 04/27] kallsyms: support "big" kernel symbols Miguel Ojeda
2022-08-05 15:41 ` [PATCH v9 05/27] kallsyms: increase maximum kernel symbol length to 512 Miguel Ojeda
2022-08-05 15:41 ` [PATCH v9 06/27] rust: add C helpers Miguel Ojeda
2022-08-17 19:44 ` Kees Cook
2022-08-17 20:22 ` Miguel Ojeda
2022-08-17 20:34 ` Kees Cook
2022-08-17 21:44 ` Miguel Ojeda
2022-08-17 23:56 ` Kees Cook
2022-08-18 16:03 ` Miguel Ojeda
2022-08-18 16:08 ` Kees Cook
2022-08-18 17:01 ` Miguel Ojeda
2022-08-05 15:41 ` [PATCH v9 08/27] rust: adapt `alloc` crate to the kernel Miguel Ojeda
2022-08-05 15:41 ` [PATCH v9 09/27] rust: add `compiler_builtins` crate Miguel Ojeda
2022-08-17 20:08 ` Kees Cook
2022-08-22 23:55 ` Nick Desaulniers
2022-08-24 18:38 ` Nick Desaulniers
2022-08-29 17:11 ` Gary Guo
2022-08-05 15:41 ` [PATCH v9 10/27] rust: add `macros` crate Miguel Ojeda
2022-08-05 15:41 ` [PATCH v9 11/27] rust: add `bindings` crate Miguel Ojeda
2022-08-05 15:41 ` [PATCH v9 12/27] rust: add `kernel` crate Miguel Ojeda
2022-08-06 10:24 ` Konstantin Shelekhin
2022-08-06 11:22 ` Miguel Ojeda
2022-08-06 12:15 ` Konstantin Shelekhin
2022-08-06 14:57 ` Matthew Wilcox
2022-09-19 14:07 ` Wedson Almeida Filho
2022-09-19 16:09 ` Linus Torvalds
2022-09-19 17:20 ` Linus Torvalds
2022-09-19 18:05 ` Wedson Almeida Filho
2022-09-19 20:42 ` Linus Torvalds
2022-09-19 22:35 ` Wedson Almeida Filho
2022-09-19 23:39 ` Linus Torvalds
2022-09-19 23:50 ` Alex Gaynor
2022-09-19 23:58 ` Linus Torvalds
2022-09-20 0:15 ` Linus Torvalds
2022-09-20 15:55 ` Eric W. Biederman
2022-09-20 22:39 ` Gary Guo
2022-09-21 6:42 ` comex
2022-09-21 14:19 ` Boqun Feng
2022-10-03 2:03 ` comex
2022-09-20 0:40 ` Boqun Feng
2022-10-03 4:17 ` Kyle Strand
2022-09-20 0:41 ` Wedson Almeida Filho
2022-09-21 11:23 ` Konstantin Shelekhin
2022-09-21 11:46 ` Greg KH
2022-08-05 15:41 ` [PATCH v9 13/27] rust: export generated symbols Miguel Ojeda
2022-08-17 20:11 ` Kees Cook
2022-08-05 15:41 ` [PATCH v9 14/27] vsprintf: add new `%pA` format specifier Miguel Ojeda
2022-08-05 15:42 ` [PATCH v9 15/27] scripts: checkpatch: diagnose uses of `%pA` in the C side as errors Miguel Ojeda
2022-08-05 15:42 ` [PATCH v9 16/27] scripts: checkpatch: enable language-independent checks for Rust Miguel Ojeda
2022-08-17 20:12 ` Kees Cook
2022-08-05 15:42 ` [PATCH v9 17/27] scripts: decode_stacktrace: demangle Rust symbols Miguel Ojeda
2022-08-05 15:42 ` [PATCH v9 18/27] scripts: add `generate_rust_analyzer.py` Miguel Ojeda
2022-08-17 20:13 ` Kees Cook
2022-08-05 15:42 ` [PATCH v9 19/27] scripts: add `generate_rust_target.rs` Miguel Ojeda
2022-08-17 20:14 ` Kees Cook
2022-08-05 15:42 ` [PATCH v9 20/27] scripts: add `rust_is_available.sh` Miguel Ojeda
2022-08-17 20:18 ` Kees Cook
2022-08-17 20:40 ` Miguel Ojeda
2022-08-22 20:09 ` Nick Desaulniers
2022-08-23 12:12 ` Miguel Ojeda
2022-08-23 12:16 ` Miguel Ojeda
2022-08-05 15:42 ` [PATCH v9 21/27] scripts: add `is_rust_module.sh` Miguel Ojeda
2022-08-17 20:19 ` Kees Cook
2022-08-05 15:42 ` [PATCH v9 22/27] rust: add `.rustfmt.toml` Miguel Ojeda
2022-08-17 20:19 ` Kees Cook
2022-08-05 15:42 ` [PATCH v9 23/27] Kbuild: add Rust support Miguel Ojeda
2022-08-17 20:26 ` Kees Cook
2022-08-17 20:56 ` Miguel Ojeda
2022-08-22 22:35 ` Nick Desaulniers
2022-09-12 16:07 ` Masahiro Yamada
2022-09-12 16:18 ` Miguel Ojeda
2022-09-13 6:37 ` Masahiro Yamada
2022-08-05 15:42 ` [PATCH v9 24/27] docs: add Rust documentation Miguel Ojeda
2022-08-05 15:42 ` Miguel Ojeda [this message]
2022-08-17 20:27 ` [PATCH v9 25/27] x86: enable initial Rust support Kees Cook
2022-08-05 15:42 ` [PATCH v9 26/27] samples: add first Rust examples Miguel Ojeda
2022-08-06 13:14 ` Konstantin Shelekhin
2022-08-17 21:02 ` Miguel Ojeda
2022-08-18 9:04 ` Konstantin Shelekhin
2022-08-17 20:28 ` Kees Cook
2022-08-05 15:42 ` [PATCH v9 27/27] MAINTAINERS: Rust Miguel Ojeda
2022-08-17 20:28 ` Kees Cook
2022-08-17 20:43 ` Miguel Ojeda
[not found] ` <20220805154231.31257-8-ojeda@kernel.org>
2022-08-17 20:07 ` [PATCH v9 07/27] rust: import upstream `alloc` crate Kees Cook
2022-08-17 21:00 ` Miguel Ojeda
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220805154231.31257-26-ojeda@kernel.org \
--to=ojeda@kernel.org \
--cc=alex.gaynor@gmail.com \
--cc=bjorn3_gh@protonmail.com \
--cc=boqun.feng@gmail.com \
--cc=bp@alien8.de \
--cc=corbet@lwn.net \
--cc=dave.hansen@linux.intel.com \
--cc=davidgow@google.com \
--cc=gary@garyguo.net \
--cc=gregkh@linuxfoundation.org \
--cc=hpa@zytor.com \
--cc=jarkko@kernel.org \
--cc=linux-doc@vger.kernel.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=patches@lists.linux.dev \
--cc=rust-for-linux@vger.kernel.org \
--cc=tglx@linutronix.de \
--cc=torvalds@linux-foundation.org \
--cc=wedsonaf@google.com \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).