Date: Sun, 19 Aug 2001 21:01:51 +0900 (JST) From: Masahide -mac- NODA <mac@clave.gr.jp> To: peter@wemm.org Cc: stable@FreeBSD.ORG Subject: Re: 4.4-RC kernel can't boot on vmware Message-ID: <20010819.210151.74757516.mac@clave.gr.jp> In-Reply-To: <20010819060458.173C738FD@overcee.netplex.com.au> References: <20010819.113313.59462943.mac@clave.gr.jp> <20010819060458.173C738FD@overcee.netplex.com.au>
next in thread | previous in thread | raw e-mail | index | archive | help
From: Peter Wemm <peter@wemm.org>
Subject: Re: 4.4-RC kernel can't boot on vmware
Date: Sat, 18 Aug 2001 23:04:58 -0700
Message-ID: <20010819060458.173C738FD@overcee.netplex.com.au>
mac> I'm using vmware for W2K(2.0.4 build 1142), Guest OS FreeBSD.
mac> I made 4.4-RC kernel and tried boot, but it can't.
mac> The kernel freeze at exec moused. I try to disable to exec moused,
mac> but init(1) panics before login prompt.
mac> 4.4-PRERELEASE kernel(cvsuped at 8/13) can boot, so, I merge change
mac> step by step, I found,
mac> merging "SSE kernel support"(2001/08/14 18:23:54 PDT) -> can't boot
mac> Kernel option "CPU_ENABLE_SSE" is not effective. I tried to both kernel
mac> CPU_ENABLE_SSE option enable/disable, but, it can't boot.
mac> 4.4-RC kernel (include SSE support)
mac> can boot on vmware, the root partionis "Virtual Disk".
mac> can't boot on vmware, the root partionis "Existing Disk Partions".
mac> 4.4-RC kernel (not include SSE support)
mac> can boot on vmware, the root partionis "Virtual Disk".
mac> can boot on vmware, the root partionis "Existing Disk Partions".
mac> 5-current kernel (cvsuped at 8/12)
mac> can boot on vmware, the root partionis "Existing Disk Partions".
peter> I am sorry, I am quite confused at this point..
Oops, sorry. It means bellow.
o 4.4-RC kernel (include SSE support) is cvsuped 4.4-RC kernel.
o 4.4-RC kernel (not include SSE support) is backouting SSE support
commit from 4.4-RC kernel.
peter> Are you saying that the commit that added SSE support makes
peter> freebsd fail as a vmware guest OS, regardless of whether it was
peter> compiled with or without CPU_ENABLE_SSE?
Yes. 4.4-RC kernel cause hangup on vmware guest OS. Kernel compiled with
or without CPU_ENABLE_ESS is not effective.
Thats root partion is "Existing Disk Partions".
peter> The only effect that the commit changed that is not masked by
peter> the CPU_ENABLE_SSE that I know about is the change to the pcb
peter> structure layout. I would like to know if the following
peter> (UNTESTED) patch has any effect:
peter> Index: npx.h
I test this patch for cvsuped 4.4-RC kernel, compiled without
CPU_ENABLE_SSE option. It works fine! (fpu.ko fail to compile)
peter> This may require some more changes to make it compile, but the
peter> intent is to shrink the savefpu structure from 512 bytes down to
peter> the size of struct save87 like it was before.
peter> If this does have an effect, then I wonder if vmware is tinkering
peter> with the pcb structure that it "knows" about from outside the
peter> virtual machine..
peter> The other possibility is that we were dangerously close to stack
peter> overflow and this extra pcb size was enough to make it fail.
Hmmm... Sorry, I'm not familiar with those feature... Sorry...
--
mac@clave.gr.jp/mac@jp.freebsd.org
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-stable" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20010819.210151.74757516.mac>