Re: [PATCH v15 06/10] arm64: Treat all entry code as non-kprobe-able

From	David Long <dave.long@linaro.org>
Newsgroups	linux.kernel
Subject	Re: [PATCH v15 06/10] arm64: Treat all entry code as non-kprobe-able
Date	2016-07-19 03:00 +0200
Message-ID	<rWry9-5fC-11@gated-at.bofh.it> (permalink)
References	<rSGYN-7fn-3@gated-at.bofh.it> <rSGYO-7fn-17@gated-at.bofh.it> <rVetk-No-33@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On 07/15/2016 12:47 PM, Catalin Marinas wrote:
> On Fri, Jul 08, 2016 at 12:35:50PM -0400, David Long wrote:
>> --- a/arch/arm64/kernel/entry.S
>> +++ b/arch/arm64/kernel/entry.S
>> @@ -243,6 +243,7 @@ tsk	.req	x28		// current thread_info
>>    * Exception vectors.
>>    */
>>
>> +	.pushsection ".entry.text", "ax"
>>   	.align	11
>>   ENTRY(vectors)
>>   	ventry	el1_sync_invalid		// Synchronous EL1t
>> @@ -781,3 +782,5 @@ ENTRY(sys_rt_sigreturn_wrapper)
>>   	mov	x0, sp
>>   	b	sys_rt_sigreturn
>>   ENDPROC(sys_rt_sigreturn_wrapper)
>> +
>> +	.popsection
>
> Does the above sigreturn wrapper need to be included in the .entry.text
> section?
>

Apparently not. It wouldn't make sense for that to be in entry.text when 
sys_rt_sigreturn() isn't. I'll put that in the list of changes.

Thanks,
-dl

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Re: [PATCH v15 06/10] arm64: Treat all entry code as non-kprobe-able Catalin Marinas <catalin.marinas@arm.com> - 2016-07-15 18:50 +0200
  Re: [PATCH v15 06/10] arm64: Treat all entry code as non-kprobe-able David Long <dave.long@linaro.org> - 2016-07-19 03:00 +0200

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