From: Bill Wendling <morbo@google.com>
To: Juergen Gross <jgross@suse.com>,
"Srivatsa S. Bhat (VMware)" <srivatsa@csail.mit.edu>,
Alexey Makhalov <amakhalov@vmware.com>,
VMware PV-Drivers Reviewers <pv-drivers@vmware.com>,
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>,
virtualization@lists.linux-foundation.org,
linux-kernel@vger.kernel.org,
Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>,
llvm@lists.linux.dev
Cc: Bill Wendling <morbo@google.com>
Subject: [PATCH 0/2] fix clobbers list with ZERO_CALL_USED_REGS feature
Date: Fri, 2 Sep 2022 21:37:48 +0000 [thread overview]
Message-ID: <20220902213750.1124421-1-morbo@google.com> (raw)
The ZERO_CALL_USED_REGS feature may zero out callee-saved registers. This needs
to be properly modeled by things like code alternatives. Otherwise, it's
possible that a callee-saved register would be expected to remain unchanged
past an ASM statement when in reality it isn't.
Bill Wendling (2):
x86/paravirt: clean up typos and grammaros
x86/paravirt: add extra clobbers with ZERO_CALL_USED_REGS enabled
arch/x86/include/asm/paravirt_types.h | 27 ++++++++++++++++++---------
1 file changed, 18 insertions(+), 9 deletions(-)
--
2.37.2.789.g6183377224-goog
next reply other threads:[~2022-09-02 21:37 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-02 21:37 Bill Wendling [this message]
2022-09-02 21:37 ` [PATCH 1/2] x86/paravirt: clean up typos and grammaros Bill Wendling
2022-09-03 4:28 ` Borislav Petkov
2022-09-03 4:28 ` Borislav Petkov
2022-09-04 2:13 ` Bill Wendling
2022-09-02 21:37 ` [PATCH 2/2] x86/paravirt: add extra clobbers with ZERO_CALL_USED_REGS enabled Bill Wendling
2022-09-03 7:18 ` Kees Cook
2022-09-03 7:18 ` Kees Cook
2022-09-05 6:02 ` Bill Wendling
2022-09-07 6:00 ` Nick Desaulniers
2022-09-07 6:00 ` Nick Desaulniers via Virtualization
2022-09-07 8:50 ` Peter Zijlstra
2022-09-07 8:50 ` Peter Zijlstra
2022-09-07 23:10 ` Kees Cook
2022-09-07 23:10 ` Kees Cook
2022-09-08 21:16 ` Bill Wendling
2022-09-14 14:40 ` Nathan Chancellor
2022-09-14 15:49 ` Bill Wendling
[not found] ` <20220914162149.71271-1-morbo@google.com>
2022-09-15 6:59 ` [PATCH v2 1/1] x86/paravirt: write paravirt ident function in assembly Juergen Gross
2022-09-15 6:59 ` Juergen Gross via Virtualization
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