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Re: [PULL 9/9] hw/i386: pass RNG seed via setup_data entry
From: |
Jason A. Donenfeld |
Subject: |
Re: [PULL 9/9] hw/i386: pass RNG seed via setup_data entry |
Date: |
Wed, 3 Aug 2022 19:07:52 +0200 |
On Wed, Aug 03, 2022 at 03:34:04PM +0200, Jason A. Donenfeld wrote:
> On Wed, Aug 03, 2022 at 03:11:48PM +0200, Jason A. Donenfeld wrote:
> > Thanks for the info. Very helpful. Looking into it now.
>
> So interestingly, this is not a new issue. If you pass any type of setup
> data, OVMF appears to be doing something unusual and passing 0xffffffff
> for all the entries, rather than the actual data. The reason this isn't
> new is: try passing `-dtb any/dtb/at/all/from/anywhere` and you get the
> same page fault, on all QEMU versions. The thing that passes the DTB is
> the thing that passes the RNG seed. Same mechanism, same bug.
>
> I'm looking into it...
Fixed with:
20220803170235.1312978-1-Jason@zx2c4.com/">https://lore.kernel.org/all/20220803170235.1312978-1-Jason@zx2c4.com/
Feel free to join into the discussion there. I CC'd you.
Jason
- Re: [PULL 9/9] hw/i386: pass RNG seed via setup_data entry, Xiaoyao Li, 2022/08/01
- Re: [PULL 9/9] hw/i386: pass RNG seed via setup_data entry, Jason A. Donenfeld, 2022/08/02
- Re: [PULL 9/9] hw/i386: pass RNG seed via setup_data entry, Xiaoyao Li, 2022/08/02
- Re: [PULL 9/9] hw/i386: pass RNG seed via setup_data entry, Jason A. Donenfeld, 2022/08/02
- Re: [PULL 9/9] hw/i386: pass RNG seed via setup_data entry, Jason A. Donenfeld, 2022/08/02
- Re: [PULL 9/9] hw/i386: pass RNG seed via setup_data entry, Xiaoyao Li, 2022/08/02
- Re: [PULL 9/9] hw/i386: pass RNG seed via setup_data entry, Daniel P . Berrangé, 2022/08/03
- Re: [PULL 9/9] hw/i386: pass RNG seed via setup_data entry, Jason A. Donenfeld, 2022/08/03
- Re: [PULL 9/9] hw/i386: pass RNG seed via setup_data entry, Jason A. Donenfeld, 2022/08/03
- Re: [PULL 9/9] hw/i386: pass RNG seed via setup_data entry,
Jason A. Donenfeld <=
- Re: [PULL 9/9] hw/i386: pass RNG seed via setup_data entry, Michael S. Tsirkin, 2022/08/03
- Re: [PULL 9/9] hw/i386: pass RNG seed via setup_data entry, Jason A. Donenfeld, 2022/08/03
- Re: [PULL 9/9] hw/i386: pass RNG seed via setup_data entry, Michael S. Tsirkin, 2022/08/03
- Re: [PULL 9/9] hw/i386: pass RNG seed via setup_data entry, Laszlo Ersek, 2022/08/04