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Re: [Qemu-devel] [Qemu-block] [PATCH 0/9] Assembly coroutine backend and
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From: |
Stefan Hajnoczi |
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Subject: |
Re: [Qemu-devel] [Qemu-block] [PATCH 0/9] Assembly coroutine backend and x86 CET support |
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Date: |
Wed, 15 May 2019 10:48:30 +0100 |
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User-agent: |
Mutt/1.11.4 (2019-03-13) |
On Thu, May 09, 2019 at 02:44:39PM +0100, Peter Maydell wrote:
> On Sun, 5 May 2019 at 16:41, Alex Bennée <address@hidden> wrote:
> >
> >
> > Paolo Bonzini <address@hidden> writes:
> >
> > > *** BLURB HERE ***
> >
> > I assume there was going to be a bit more background here?
>
> Mmm, could we have the rationale, please ?
Paolo can add more if necessary, but my understanding is:
1. It's required for Intel Control-flow Enforcement Technology (CET).
The existing ucontext backend doesn't work with CET.
2. It's faster than the existing ucontext implementation.
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- [Qemu-devel] [PATCH 5/9] coroutine: add host specific coroutine backend for 64-bit s390, (continued)
- [Qemu-devel] [PATCH 5/9] coroutine: add host specific coroutine backend for 64-bit s390, Paolo Bonzini, 2019/05/04
- [Qemu-devel] [PATCH 6/9] configure: add control-flow protection support, Paolo Bonzini, 2019/05/04
- [Qemu-devel] [PATCH 8/9] tcg/i386: add support for IBT, Paolo Bonzini, 2019/05/04
- [Qemu-devel] [PATCH 7/9] tcg: add tcg_out_start, Paolo Bonzini, 2019/05/04
- [Qemu-devel] [PATCH 9/9] linux-user: add IBT support to x86 safe-syscall.S, Paolo Bonzini, 2019/05/04
- [Qemu-devel] [PATCH 10/9] coroutine-asm: add x86 CET shadow stack support, Paolo Bonzini, 2019/05/04
- Re: [Qemu-devel] [PATCH 0/9] Assembly coroutine backend and x86 CET support, Alex Bennée, 2019/05/05
Re: [Qemu-devel] [PATCH 0/9] Assembly coroutine backend and x86 CET support, Stefan Hajnoczi, 2019/05/09