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From: Raphael Gault <raphael.gault@arm.com>
To: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: raph.gault+kdev@gmail.com, peterz@infradead.org,
	catalin.marinas@arm.com, will.deacon@arm.com,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	julien.thierry.kdev@gmail.com
Subject: Re: [RFC v4 00/18] objtool: Add support for arm64
Date: Fri, 23 Aug 2019 13:00:43 +0100	[thread overview]
Message-ID: <0493722d-2c6e-c91e-1f8e-7c6674b299c7@arm.com> (raw)
In-Reply-To: <20190822195627.mzi3c4sjqnvnzaho@treble>

Hi Josh,

On 8/22/19 8:56 PM, Josh Poimboeuf wrote:
> On Fri, Aug 16, 2019 at 01:23:45PM +0100, Raphael Gault wrote:
>> Hi,
>>
>> Changes since RFC V3:
>> * Rebased on tip/master: Switch/jump table had been refactored
>> * Take Catalin Marinas comments into account regarding the asm macro for
>>    marking exceptions.
>>
>> As of now, objtool only supports the x86_64 architecture but the
>> groundwork has already been done in order to add support for other
>> architectures without too much effort.
>>
>> This series of patches adds support for the arm64 architecture
>> based on the Armv8.5 Architecture Reference Manual.
>>
>> Objtool will be a valuable tool to progress and provide more guarentees
>> on live patching which is a work in progress for arm64.
>>
>> Once we have the base of objtool working the next steps will be to
>> port Peter Z's uaccess validation for arm64.
> 
> Hi Raphael,
> 
> Sorry about the long delay.  I have some comments coming shortly.
> 
> One general comment: I noticed that several of the (mostly minor)
> suggested changes I made for v1 haven't been fixed.
> 
> I'll try to suggest them again here for v4, so you don't need to go back
> and find them.  But in the future please try to incorporate all the
> comments from previous patch sets before posting new versions.  I'm sure
> it wasn't intentional, as you did acknowledge and agree to most of the
> changes.  But it does waste people's time and goodwill if you neglect to
> incorporate their suggestions.  Thanks.
> 

Indeed, sorry about that.

Thanks for you comments, I will do my best to address them shortly. 
However, I won't have access to my professional emails for a little 
while and probably won't be able to work on this before at least a week. 
I'll try to have a new soon though and use my personal email.

Thanks,

-- 
Raphael Gault

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  reply	other threads:[~2019-08-23 12:01 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-16 12:23 [RFC v4 00/18] objtool: Add support for arm64 Raphael Gault
2019-08-16 12:23 ` [RFC v4 01/18] objtool: Add abstraction for computation of symbols offsets Raphael Gault
2019-08-22 16:30   ` Julien
2019-08-22 19:57   ` Josh Poimboeuf
2019-08-16 12:23 ` [RFC v4 02/18] objtool: orc: Refactor ORC API for other architectures to implement Raphael Gault
2019-08-22 19:59   ` Josh Poimboeuf
2019-08-16 12:23 ` [RFC v4 03/18] objtool: Move registers and control flow to arch-dependent code Raphael Gault
2019-08-22 20:00   ` Josh Poimboeuf
2019-08-16 12:23 ` [RFC v4 04/18] objtool: arm64: Add required implementation for supporting the aarch64 architecture in objtool Raphael Gault
2019-08-22 20:00   ` Josh Poimboeuf
2019-08-16 12:23 ` [RFC v4 05/18] objtool: special: Adapt special section handling Raphael Gault
2019-08-22 20:02   ` Josh Poimboeuf
2019-08-22 20:18   ` Julien
2019-08-16 12:23 ` [RFC v4 06/18] objtool: arm64: Adapt the stack frame checks for arm architecture Raphael Gault
2019-08-22 20:03   ` Josh Poimboeuf
2019-08-16 12:23 ` [RFC v4 07/18] objtool: Introduce INSN_UNKNOWN type Raphael Gault
2019-08-22 20:04   ` Josh Poimboeuf
2019-08-22 20:45     ` Julien
2019-08-22 21:51       ` Josh Poimboeuf
2019-08-16 12:23 ` [RFC v4 08/18] objtool: Refactor switch-tables code to support other architectures Raphael Gault
2019-08-22 20:04   ` Josh Poimboeuf
2019-08-16 12:23 ` [RFC v4 09/18] gcc-plugins: objtool: Add plugin to detect switch table on arm64 Raphael Gault
2019-08-22 20:05   ` Josh Poimboeuf
2019-08-16 12:23 ` [RFC v4 10/18] objtool: arm64: Implement functions to add switch tables alternatives Raphael Gault
2019-08-23 16:35   ` Julien
2019-08-16 12:23 ` [RFC v4 11/18] arm64: alternative: Mark .altinstr_replacement as containing executable instructions Raphael Gault
2019-08-16 12:23 ` [RFC v4 12/18] arm64: assembler: Add macro to annotate asm function having non standard stack-frame Raphael Gault
2019-08-22 20:10   ` Josh Poimboeuf
2019-08-16 12:23 ` [RFC v4 13/18] arm64: sleep: Prevent stack frame warnings from objtool Raphael Gault
2019-08-22 20:16   ` Josh Poimboeuf
2019-08-16 12:23 ` [RFC v4 14/18] arm64: kvm: Annotate non-standard stack frame functions Raphael Gault
2019-08-16 12:24 ` [RFC v4 15/18] arm64: kernel: Add exception on kuser32 to prevent stack analysis Raphael Gault
2019-08-16 12:24 ` [RFC v4 16/18] arm64: crypto: Add exceptions for crypto object " Raphael Gault
2019-08-22 20:19   ` Josh Poimboeuf
2019-08-16 12:24 ` [RFC v4 17/18] arm64: kernel: Annotate non-standard stack frame functions Raphael Gault
2019-08-16 12:24 ` [RFC v4 18/18] objtool: arm64: Enable stack validation for arm64 Raphael Gault
2019-08-22 19:56 ` [RFC v4 00/18] objtool: Add support " Josh Poimboeuf
2019-08-23 12:00   ` Raphael Gault [this message]
2019-10-14  8:37 ` Julien Thierry
2019-10-14 13:27   ` Raphaël Gault

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