Re: [PATCH -v2] x86/retpoline: Ensure default return thunk isn't used at runtime

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Subject: Re: [PATCH -v2] x86/retpoline: Ensure default return thunk isn't used at runtime
From: Borislav Petkov <bp@xxxxxxxxx>
Date: Wed, 3 Apr 2024 22:41:13 +0200
Cc: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>, "Kaplan, David" <David.Kaplan@xxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, "linux-tip-commits@xxxxxxxxxxxxxxx" <linux-tip-commits@xxxxxxxxxxxxxxx>, "Peter Zijlstra (Intel)" <peterz@xxxxxxxxxxxxx>, "x86@xxxxxxxxxx" <x86@xxxxxxxxxx>, David Howells <dhowells@xxxxxxxxxx>
In-reply-to: <f37a111b-f5c5-4337-8eaf-46a2c28f01da@gmail.com>
References: <20240104131210.GDZZauqoeKoZGpYwDd@fat_crate.local> <20240104132446.GEZZaxnrIgIyat0pqf@fat_crate.local> <20240104132623.GFZZax/wyf5Y3rMX5G@fat_crate.local> <20240207175010.nrr34b2pp3ewe3ga@treble> <20240207185328.GEZcPRqPsNInRXyNMj@fat_crate.local> <20240207194919.qw4jk2ykadjn5d4e@treble> <20240212104348.GCZcn2ZPr445KUyQ7k@fat_crate.local> <78e0d19c-b77a-4169-a80f-2eef91f4a1d6@gmail.com> <20240403173059.GJZg2SUwS8MXw7CdwF@fat_crate.local> <f37a111b-f5c5-4337-8eaf-46a2c28f01da@gmail.com>

On Wed, Apr 03, 2024 at 10:26:19PM +0200, Klara Modin wrote:
> Probably, I don't have much knowledge about this stuff. The machine can at
> least be useful for testing still :)

I wouldn't use it if I were you as it wouldn't even justify the
electricity wasted. No one cares about 32-bit x86 kernels anymore and we
barely keep them alive.

It'll be a lot more helpful if you'd test 64-bit kernels on 64-bit hw.

:-)

Thx.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette

Follow-Ups:
- Re: [PATCH -v2] x86/retpoline: Ensure default return thunk isn't used at runtime
  - From: Klara Modin

References:
- Re: [tip: x86/bugs] x86/retpoline: Ensure default return thunk isn't used at runtime
  - From: Borislav Petkov
- [PATCH -v2] x86/retpoline: Ensure default return thunk isn't used at runtime
  - From: Borislav Petkov
- Re: [PATCH -v2] x86/retpoline: Ensure default return thunk isn't used at runtime
  - From: Borislav Petkov
- Re: [PATCH -v2] x86/retpoline: Ensure default return thunk isn't used at runtime
  - From: Josh Poimboeuf
- Re: [PATCH -v2] x86/retpoline: Ensure default return thunk isn't used at runtime
  - From: Borislav Petkov
- Re: [PATCH -v2] x86/retpoline: Ensure default return thunk isn't used at runtime
  - From: Josh Poimboeuf
- Re: [PATCH -v2] x86/retpoline: Ensure default return thunk isn't used at runtime
  - From: Borislav Petkov
- Re: [PATCH -v2] x86/retpoline: Ensure default return thunk isn't used at runtime
  - From: Klara Modin
- Re: [PATCH -v2] x86/retpoline: Ensure default return thunk isn't used at runtime
  - From: Borislav Petkov
- Re: [PATCH -v2] x86/retpoline: Ensure default return thunk isn't used at runtime
  - From: Klara Modin

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