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Re: [PATCH v2 09/35] x86/domain: print emulation_flags
- To: dmukhin@xxxxxxxx
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Tue, 10 Dec 2024 14:30:25 +0100
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Tue, 10 Dec 2024 13:30:36 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 06.12.2024 05:41, Denis Mukhin via B4 Relay wrote:
> Print d->arch.emulation_flags on the console for better traceability while
> debugging in-hypervisor hardware emulators.
Personally I disagree with such extra printing. And that would in this case
even apply if you used dprintk() or gdprintk(). However, if others support
the idea, I don't mean to stand in the way. Just that ...
> --- a/xen/arch/x86/domain.c
> +++ b/xen/arch/x86/domain.c
> @@ -818,11 +818,15 @@ int arch_domain_create(struct domain *d,
>
> if ( !emulation_flags_ok(d, emflags) )
> {
> - printk(XENLOG_G_ERR "d%d: Xen does not allow %s domain creation "
> + printk(XENLOG_G_ERR "d%d: Xen does not allow %s %sdomain creation "
> "with the current selection of emulators: %#x\n",
> - d->domain_id, is_hvm_domain(d) ? "HVM" : "PV", emflags);
> + d->domain_id,
... if already you touch this, please switch to %pd and also ...
> + is_hvm_domain(d) ? "HVM" : "PV",
> + is_hardware_domain(d) ? "(hardware) " : "",
> + emflags);
> return -EOPNOTSUPP;
> }
> + printk(XENLOG_G_INFO "d%d: emulation_flags %#x\n", d->domain_id,
> emflags);
.. use that here.
Jan
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