Date: Thu, 31 Jan 2002 11:58:00 -0500 From: Glenn Gombert <ggombert@imatowns.com> To: "Logan weaponx" <loganweaponx@hotmail.com>, freebsd-current@freebsd.org Subject: Re: vmware Message-ID: <3.0.6.32.20020131115800.00db6480@imatowns.com> In-Reply-To: <F138kwzh5WdEn6dCfAj000080c2@hotmail.com>
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Here is an item that was mentioned sometime ago on the mailing list,
-CURRENT runs just fine under VMWare Workstation 3.0 (on Win2K
Professional) once this patch is made:
Glenn G.
>>>>>>>>>>>>>>>>>>>>>>>
Someone mentioned on a list somewhere that vmware takes forever to
emulate the cmpxchg instruction, and that using the I386_CPU version
of atomic_cmpset_int() helps a lot. I noticed a major vmware slowdown
with -current sometime in September, so I tried avoiding the
cmpxchg's and things got much faster. Below is the patch I use
(using this outside vmware on SMP hardware is a bad idea :-).
Ian
Index: atomic.h
===================================================================
RCS file: /dump/FreeBSD-CVS/src/sys/i386/include/atomic.h,v
retrieving revision 1.21
diff -u -r1.21 atomic.h
--- atomic.h 2001/10/08 20:58:24 1.21
+++ atomic.h 2001/10/09 18:35:25
@@ -111,7 +111,7 @@
* Returns 0 on failure, non-zero on success
*/
-#if defined(I386_CPU)
+#if defined(I386_CPU) || 1
static __inline int
atomic_cmpset_int(volatile u_int *dst, u_int exp, u_int src)
{
At 12:56 AM 2/1/2002 +1100, Logan weaponx wrote:
>hi,
> I was wondering if there are any tricks required to make freebsd
>5.0-current work under vmware 3.0 (Windows XP host). When I try and boot
>(from the 20020127 snapshot) it fails to boot. It hangs at different stages
>in the boot each time, but the furthest it has ever gotten is trying to load
>/sbin/init. I can boot from kern.flp and then use my root partition, but
>things dont load correctly (network, filesystems, etc). I looked through the
>archives and noted a few posts regarding different vmware issues and a
>patch.
>
Glenn Gombert
ggombert@imatowns.com
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