From: Stephen Hemminger <stephen@networkplumber.org>
To: Thomas Monjalon <thomas@monjalon.net>
Cc: dev@dpdk.org, stable@dpdk.org,
Luigi Rizzo <rizzo.unipi@gmail.com>,
Bruce Richardson <bruce.richardson@intel.com>,
Konstantin Ananyev <konstantin.ananyev@huawei.com>,
Sergio Gonzalez Monroy <sergio.gonzalez.monroy@intel.com>,
Harry van Haaren <harry.van.haaren@intel.com>
Subject: Re: [PATCH] eal/x86: fix TSC frequency query
Date: Fri, 30 Jan 2026 10:15:06 -0800 [thread overview]
Message-ID: <20260130101506.175ca913@phoenix.local> (raw)
In-Reply-To: <20260130171026.277418-1-thomas@monjalon.net>
On Fri, 30 Jan 2026 18:10:26 +0100
Thomas Monjalon <thomas@monjalon.net> wrote:
> After getting TSC information from cpuid instruction,
> some values must be multiplied and divided.
> We must multiply first to get the most accurate value.
>
> Example:
> before: 1000000000 * (23 / 10) = 2 GHz
> after: 1000000000 * 23 / 10 = 2.3 GHz
>
> Bugzilla ID: 1869
> Fixes: ad3516bb4ae1 ("eal/x86: implement arch-specific TSC freq query")
> Cc: stable@dpdk.org
>
> Reported-by: Luigi Rizzo <rizzo.unipi@gmail.com>
> Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Reviewed-by: Stephen Hemminger <stephen@networkplumber.org>
next prev parent reply other threads:[~2026-01-30 18:15 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-30 17:10 [PATCH] eal/x86: fix TSC frequency query Thomas Monjalon
2026-01-30 18:15 ` Stephen Hemminger [this message]
2026-02-03 11:08 ` Thomas Monjalon
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