From: Will Deacon <will@kernel.org>
To: Mark Brown <broonie@kernel.org>
Cc: Kees Cook <keescook@chromium.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Jean-Philippe Brucker <jean-philippe.brucker@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Amit Kachhap <amit.kachhap@arm.com>,
Vincenzo Frascino <Vincenzo.Frascino@arm.com>,
Dave Martin <Dave.Martin@arm.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v3 00/11] arm64: BTI kernel and vDSO support
Date: Thu, 7 May 2020 16:26:05 +0100 [thread overview]
Message-ID: <20200507152605.GA2648@willie-the-truck> (raw)
In-Reply-To: <20200507150713.GA6183@sirena.org.uk>
On Thu, May 07, 2020 at 04:07:13PM +0100, Mark Brown wrote:
> On Thu, May 07, 2020 at 03:35:47PM +0100, Will Deacon wrote:
> > On Thu, May 07, 2020 at 03:33:32PM +0100, Will Deacon wrote:
>
> > > Bugger, I'm still getting warnings (clang 11.0.1), but from an allmodconfig
> > > build now:
>
> > > warning: some functions compiled with BTI and some compiled without BTI
> > > warning: not setting BTI in feature flags
>
> > > (repeated many, many times).
>
> > > I'll try to get you some more info.
>
> Where are you getting this clang from? When I test using clang 11 from
> the LLVM apt repos right now it seems fine, and clang 11 doesn't seem to
> have been released yet so I'm guessing this is some kind of snapshot.
I'm using a build of:
https://android.googlesource.com/toolchain/llvm-project/+/b397f81060ce6d701042b782172ed13bee898b79
> > Quick look at the log suggests that these are caused by HDRTEST, whatever
> > that is.
>
> AFAICT that's something that's supposed to be checking for include
> guards and not doing anything fancy... I can't think what could cause
> this on a per-function basis.
Indeed, sorry for jumping the gun on that diagnosis.
Will
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next prev parent reply other threads:[~2020-05-07 15:26 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-06 19:51 [PATCH v3 00/11] arm64: BTI kernel and vDSO support Mark Brown
2020-05-06 19:51 ` [PATCH v3 01/11] arm64: Document why we enable PAC support for leaf functions Mark Brown
2020-05-06 19:51 ` [PATCH v3 02/11] arm64: bti: Support building kernel C code using BTI Mark Brown
2020-05-06 19:51 ` [PATCH v3 03/11] arm64: asm: Override SYM_FUNC_START when building the kernel with BTI Mark Brown
2020-05-06 19:51 ` [PATCH v3 04/11] arm64: Set GP bit in kernel page tables to enable BTI for the kernel Mark Brown
2020-05-06 19:51 ` [PATCH v3 05/11] arm64: bpf: Annotate JITed code for BTI Mark Brown
2020-05-07 20:15 ` Daniel Borkmann
2020-05-06 19:51 ` [PATCH v3 06/11] arm64: mm: Mark executable text as guarded pages Mark Brown
2020-05-06 19:51 ` [PATCH v3 07/11] arm64: bti: Provide Kconfig for kernel mode BTI Mark Brown
2020-05-06 19:51 ` [PATCH v3 08/11] arm64: asm: Provide a mechanism for generating ELF note for BTI Mark Brown
2020-05-06 19:51 ` [PATCH v3 09/11] arm64: vdso: Annotate " Mark Brown
2020-05-06 19:51 ` [PATCH v3 10/11] arm64: vdso: Force the vDSO to be linked as BTI when built " Mark Brown
2020-05-06 19:51 ` [PATCH v3 11/11] arm64: vdso: Map the vDSO text with guarded pages " Mark Brown
2020-05-07 14:33 ` [PATCH v3 00/11] arm64: BTI kernel and vDSO support Will Deacon
2020-05-07 14:35 ` Will Deacon
2020-05-07 14:59 ` Will Deacon
2020-05-07 15:09 ` Mark Brown
2020-05-07 15:18 ` Will Deacon
2020-05-07 15:48 ` Mark Brown
2020-05-07 15:55 ` Will Deacon
2020-05-07 16:30 ` Mark Brown
2020-05-07 16:36 ` Will Deacon
2020-05-07 16:47 ` Mark Brown
2020-05-08 16:53 ` Mark Brown
2020-05-07 15:07 ` Mark Brown
2020-05-07 15:26 ` Will Deacon [this message]
2020-05-07 17:25 ` Will Deacon
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