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Re: [PATCH v11 4/5] xen/riscv: enable GENERIC_BUG_FRAME
- To: oleksii.kurochko@xxxxxxxxx
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Fri, 2 Aug 2024 13:18:04 +0200
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- Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Fri, 02 Aug 2024 11:18:14 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 02.08.2024 13:02, oleksii.kurochko@xxxxxxxxx wrote:
> There is something what we need is mentioned here:
> https://github.com/riscv-non-isa/riscv-asm-manual/blob/main/riscv-asm.md#instruction-aliases
> But the problem is that is "de-facto" standard, but not really standard
> instruction. Anyway, I will update the patch to use (C0001073) instead
> of ebreak.
Well, the official spec, in the C extension, mentions 0x0000 as "defined
illegal instruction". Wouldn't using that work? It's going to be undefined
no matter whether the C extension is actually implemented.
Jan
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