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Re: [PATCH v2] xen/x86: Check supported features even for PVH dom0
- To: Frediano Ziglio <freddy77@xxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Tue, 7 Apr 2026 08:56:03 +0200
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- Cc: Frediano Ziglio <frediano.ziglio@xxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Tue, 07 Apr 2026 06:56:06 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 02.04.2026 17:55, Frediano Ziglio wrote:
> --- a/xen/arch/x86/dom0_build.c
> +++ b/xen/arch/x86/dom0_build.c
> @@ -320,6 +320,20 @@ unsigned long __init dom0_paging_pages(const struct
> domain *d,
> return DIV_ROUND_UP(memkb, 1024) << (20 - PAGE_SHIFT);
> }
>
> +int __init dom0_check_parms(
I understand the "dom0" in the name is owing to the filename and perhaps
adjacent other similar functions, yet ...
> + struct domain *d, const struct elf_dom_parms *parms)
> +{
> + if ( parms->elf_notes[XEN_ELFNOTE_SUPPORTED_FEATURES].type ==
> XEN_ENT_NONE )
> + return 0;
> +
> + if ( is_hardware_domain(d) && !test_bit(XENFEAT_dom0,
> parms->f_supported) )
... if this was about solely Dom0, no is_hardware_domain() should be present
here. Maybe s/dom0/initdom/ ?
Jan
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