From: Mikael Pettersson <mikpe@csd.uu.se>
To: linux-kernel@vger.kernel.org
Subject: 2.6.0-test2 on Dell PE2650, ACPI_HT_ONLY strangeness
Date: Wed, 6 Aug 2003 16:40:00 +0200 [thread overview]
Message-ID: <16177.4928.365768.935653@gargle.gargle.HOWL> (raw)
Before upgrading our PowerEdge 2650 (dual HT Xeons, Tigon3,
aic7899, workspace on sw raid5 over 4 disks, ext3) to RH9,
I gave 2.6.0-test2 a spin. Worked fine, except for one thing.
In 2.4, CONFIG_SMP automatically uses acpitable.c to detect
secondary threads via the MADT (since MPS doesn't handle them).
In 2.6.0-test2, with CONFIG_SMP and CONFIG_ACPI_HT_ONLY, this
doesn't happen, _unless_ I also pass acpismp=force on the command
line. Without acpismp=force, it only finds two CPUs.
The logic in arch/i386/kernel/setup.c, which defaults acpi to
disabled if HT_ONLY is chosen, seems backwards. Surely if I
configure HT_ONLY it's because I want to use it, no?
/Mikael
next reply other threads:[~2003-08-06 14:40 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-06 14:40 Mikael Pettersson [this message]
2003-08-06 15:48 Brown, Len
2003-08-06 15:56 ` Mikael Pettersson
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