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Don't call int15:820, it's not allowed to be called from vm86 mode.

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PR:		i386/10485
Submitted by:	takawata@shidahara1.planet.sci.kobe-u.ac.jp
This commit is contained in:
Mike Smith 1999-03-16 21:22:24 +00:00
parent 446a106927
commit dbffaab09b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=44809
1 changed files with 1 additions and 30 deletions
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31
sys/i386/i386/vm86.c
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@ -23,7 +23,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: vm86.c,v 1.19 1998/12/07 21:58:19 archie Exp $
* $Id: vm86.c,v 1.20 1999/01/28 01:59:51 dillon Exp $
*/
#include "opt_vm86.h"
@ -479,35 +479,6 @@ initial_bioscalls(u_int *basemem, u_int *extmem)
pte[i] = (i << PAGE_SHIFT) | PG_V | PG_RW | PG_U;
}
/*
* get memory map with INT 15:E820
*/
#define SMAPSIZ sizeof(smap)
#define SMAP_SIG 0x534D4150 /* 'SMAP' */
vmf.vmf_ebx = 0;
do {
vmf.vmf_eax = 0xE820;
vmf.vmf_edx = SMAP_SIG;
vmf.vmf_ecx = SMAPSIZ;
i = vm86_datacall(0x15, &vmf,
(char *)&smap, SMAPSIZ, &vmf.vmf_es, &vmf.vmf_di);
if (i || vmf.vmf_eax != SMAP_SIG)
break;
if (smap.type == 0x01 && smap.base >= highwat) {
*extmem += (smap.length / 1024);
highwat = smap.base + smap.length;
}
} while (vmf.vmf_ebx != 0);
if (*extmem != 0) {
if (*extmem > *basemem) {
*extmem -= *basemem;
method = 0xE820;
goto done;
}
printf("E820: extmem (%d) < basemem (%d)\n", *extmem, *basemem);
}
/*
* try memory map with INT 15:E801
*/