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Date: Tue, 28 Jul 2026 17:02:54 +0200
From: Roger Pau =?utf-8?B?TW9ubsOp?= <roger.pau@citrix.com>
To: Jan Beulich <jbeulich@suse.com>
Cc: "xen-devel@lists.xenproject.org" <xen-devel@lists.xenproject.org>,
	Andrew Cooper <andrew.cooper3@citrix.com>,
	Julien Grall <julien@xen.org>,
	Stefano Stabellini <sstabellini@kernel.org>,
	Anthony PERARD <anthony.perard@vates.tech>,
	Michal Orzel <michal.orzel@amd.com>
Subject: Re: [PATCH v2 2/4] time: shorten year determination loop
Message-ID: <amjEnux2uyhYL-pu@macbook.local>
References: <79d50725-3892-4643-b854-bfec9c0c0d79@suse.com>
 <7bed7164-9a53-4e53-9fc1-7af68108bdf8@suse.com>
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In-Reply-To: <7bed7164-9a53-4e53-9fc1-7af68108bdf8@suse.com>

On Thu, Jul 02, 2026 at 11:30:11AM +0200, Jan Beulich wrote:
> For dates very far into the future (the MC146818 RTC's century byte can go
> up to the 99th century), the present year-wise loop would become somewhat
> inefficient (taking perhaps several thousand iterations). Prefix that loop
> with a 400-year granular calculation (somewhat like the earlier loop does
> for dates in the past).
> 
> Signed-off-by: Jan Beulich <jbeulich@suse.com>

Acked-by: Roger Pau Monné <roger@xenproject.org>

Thanks, Roger.