From: "Russell King (Oracle)" <linux@armlinux.org.uk>
To: Linus Walleij <linus.walleij@linaro.org>
Cc: Sami Tolvanen <samitolvanen@google.com>,
Kees Cook <keescook@chromium.org>,
Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>,
Ard Biesheuvel <ardb@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
linux-arm-kernel@lists.infradead.org, llvm@lists.linux.dev
Subject: Re: [PATCH v3 2/9] ARM: tlbflush: Make TLB flushes into static inlines
Date: Mon, 11 Mar 2024 09:39:01 +0000 [thread overview]
Message-ID: <Ze7RNalwiZbceFxX@shell.armlinux.org.uk> (raw)
In-Reply-To: <20240311-arm32-cfi-v3-2-224a0f0a45c2@linaro.org>
On Mon, Mar 11, 2024 at 10:15:39AM +0100, Linus Walleij wrote:
> Instead of just using defines to define the TLB flush functions,
> use static inlines.
>
> This has the upside that we can tag those as __nocfi so we can
> execute a CFI-enabled kernel.
Why? This seems to be brain dead.
Why can't CLANG cope with directly calling e.g.
cpu_tlb.flush_user_range? Why does it need a static function to do
exactly the same as the macro does?
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!
next prev parent reply other threads:[~2024-03-11 9:39 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-11 9:15 [PATCH v3 0/9] CFI for ARM32 using LLVM Linus Walleij
2024-03-11 9:15 ` [PATCH v3 1/9] ARM: Support CLANG CFI Linus Walleij
2024-03-11 10:24 ` Ard Biesheuvel
2024-03-11 9:15 ` [PATCH v3 2/9] ARM: tlbflush: Make TLB flushes into static inlines Linus Walleij
2024-03-11 9:39 ` Russell King (Oracle) [this message]
2024-03-11 10:03 ` Ard Biesheuvel
2024-03-11 15:34 ` Sami Tolvanen
2024-03-11 19:50 ` Linus Walleij
2024-03-11 21:36 ` Sami Tolvanen
2024-03-11 22:17 ` Linus Walleij
2024-03-11 22:28 ` Sami Tolvanen
2024-03-11 23:56 ` Linus Walleij
2024-03-12 7:24 ` Ard Biesheuvel
2024-03-12 8:14 ` Linus Walleij
2024-03-11 9:15 ` [PATCH v3 3/9] ARM: bugs: Check in the vtable instead of defined aliases Linus Walleij
2024-03-11 9:15 ` [PATCH v3 4/9] ARM: proc: Use inlines instead of defines Linus Walleij
2024-03-11 9:15 ` [PATCH v3 5/9] ARM: delay: Turn delay functions into static inlines Linus Walleij
2024-03-11 12:26 ` Ard Biesheuvel
2024-03-11 9:15 ` [PATCH v3 6/9] ARM: turn CPU cache flush " Linus Walleij
2024-03-11 9:15 ` [PATCH v3 7/9] ARM: page: Turn highpage accesses " Linus Walleij
2024-03-11 12:15 ` Ard Biesheuvel
2024-03-28 8:18 ` Linus Walleij
2024-03-11 9:15 ` [PATCH v3 8/9] ARM: ftrace: Define ftrace_stub_graph Linus Walleij
2024-03-11 9:15 ` [PATCH v3 9/9] ARM: KCFI: Allow permissive CFI mode Linus Walleij
2024-03-11 22:03 ` Kees Cook
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