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Re: [PATCH] x86emul: rework compiler probing in the test harness
- To: Jan Beulich <jbeulich@xxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Mon, 5 Jun 2023 13:08:53 +0100
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- Cc: Wei Liu <wl@xxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
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- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 02/03/2023 2:28 pm, Jan Beulich wrote:
> Checking for what $(SIMD) contains was initially right, but already the
> addition of $(FMA) wasn't. Later categories (correctly) weren't added.
> Instead what is of interest is anything the main harness source file
> uses outside of suitable #if and without resorting to .byte, as that's
> the one file (containing actual tests) which has to succeed in building.
> The auxiliary binary blobs we utilize may fail to build; the resulting
> empty blobs are recognized and reported as "n/a" when the harness is
> run.
>
> Note that strictly speaking we'd need to probe the assembler. We assume
> that a compiler knowing of a certain ISA extension is backed by an
> equally capable assembler.
>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
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