diff options
| author | peter <peter@FreeBSD.org> | 1997-09-22 05:03:03 +0000 |
|---|---|---|
| committer | peter <peter@FreeBSD.org> | 1997-09-22 05:03:03 +0000 |
| commit | 1a8283e614e3a317cf6efe6a4809ecfb1483bf67 (patch) | |
| tree | 9e49e7c06210fbac344e236379c8fcb5a567c771 /sys/amd64 | |
| parent | e74401cd50a1d7d9cfd27e727b355b2556108aab (diff) | |
| download | FreeBSD-src-1a8283e614e3a317cf6efe6a4809ecfb1483bf67.zip FreeBSD-src-1a8283e614e3a317cf6efe6a4809ecfb1483bf67.tar.gz | |
Turn on CR4_VME on the AP's the same as the BSP. Note that we do not
[yet] probe the AP's for their cpuid/capabilities etc, so this is a fudge
at best.
Problem noted by: Jonathan Lemon <jlemon@americantv.com>
Diffstat (limited to 'sys/amd64')
| -rw-r--r-- | sys/amd64/amd64/mpboot.S | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/sys/amd64/amd64/mpboot.S b/sys/amd64/amd64/mpboot.S index 9d51b1f..1c66dae 100644 --- a/sys/amd64/amd64/mpboot.S +++ b/sys/amd64/amd64/mpboot.S @@ -31,7 +31,7 @@ * mpboot.s: FreeBSD machine support for the Intel MP Spec * multiprocessor systems. * - * $Id: mpboot.s,v 1.3 1997/08/25 10:57:36 peter Exp $ + * $Id: mpboot.s,v 1.4 1997/08/26 18:10:32 peter Exp $ */ #include <machine/asmacros.h> /* miscellaneous asm macros */ @@ -92,6 +92,18 @@ mp_begin: /* now running relocated at KERNBASE */ call _init_secondary /* load i386 tables */ CHECKPOINT(0x38, 5) +#ifdef VM86 + /* + * If the [BSP] CPU has support for VME, turn it on. + */ + testl $CPUID_VME, _cpu_feature /* XXX WRONG! BSP! */ + jz 1f + movl %cr4, %eax + orl $CR4_VME, %eax + movl %eax, %cr4 +1: +#endif + /* disable the APIC, just to be SURE */ movl lapic_svr, %eax /* get spurious vector reg. */ andl $~APIC_SVR_SWEN, %eax /* clear software enable bit */ |
