From: Jan Beulich <jbeulich@suse.com>
To: Jiaqing Zhao <Zhao.Jiaqing@amd.com>
Cc: "Teddy Astie" <teddy.astie@vates.tech>,
"Andrew Cooper" <andrew.cooper3@citrix.com>,
"Roger Pau Monné" <roger@xenproject.org>,
xen-devel@lists.xenproject.org
Subject: Re: [PATCH] x86/cpuid: gate the hypervisor PV-only leaf on is_pv_domain()
Date: Wed, 26 Aug 2026 11:42:06 +0200 [thread overview]
Message-ID: <2aa33f72-8577-4eed-98d2-099b0ced2cb7@suse.com> (raw)
In-Reply-To: <20260826072526.767424-1-Zhao.Jiaqing@amd.com>
On 26.08.2026 09:25, Jiaqing Zhao wrote:
> Hypervisor leaf 5 is PV-specific, but is gated with !is_hvm_domain(),
> which stays a runtime test in a build without PV support. Test for a
> PV domain directly so the compiler can discard the leaf when
> CONFIG_PV is disabled.
>
> Suggested-by: Roger Pau Monné <roger@xenproject.org>
> Signed-off-by: Jiaqing Zhao <Zhao.Jiaqing@amd.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
next prev parent reply other threads:[~2026-08-26 9:42 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-26 7:25 [PATCH] x86/cpuid: gate the hypervisor PV-only leaf on is_pv_domain() Jiaqing Zhao
2026-08-26 9:42 ` Jan Beulich [this message]
2026-08-28 9:41 ` Roger Pau Monné
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