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| Started by | Catalin Marinas <catalin.marinas@arm.com> |
|---|---|
| First post | 2016-07-15 18:50 +0200 |
| Last post | 2016-07-19 03:00 +0200 |
| Articles | 2 — 2 participants |
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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
| From | Catalin Marinas <catalin.marinas@arm.com> |
|---|---|
| Date | 2016-07-15 18:50 +0200 |
| Subject | Re: [PATCH v15 06/10] arm64: Treat all entry code as non-kprobe-able |
| Message-ID | <rVetk-No-33@gated-at.bofh.it> |
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? -- Catalin
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| From | David Long <dave.long@linaro.org> |
|---|---|
| Date | 2016-07-19 03:00 +0200 |
| Message-ID | <rWry9-5fC-11@gated-at.bofh.it> |
| In reply to | #1444445 |
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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