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Change from Bruce:

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isa_dmarangecheck() is off by one error.
> ISARAM_END should be >= ISARAM_END. Only the first page above 16M
was mishandled.
This commit is contained in:
Andrey A. Chernov 1994-04-02 20:43:25 +00:00
parent 83c4d4f67a
commit e42b7b4096
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=1323
2 changed files with 4 additions and 4 deletions
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4
sys/amd64/isa/isa.c
View File

@ -34,7 +34,7 @@
* SUCH DAMAGE.
*
* from: @(#)isa.c 7.2 (Berkeley) 5/13/91
* $Id: isa.c,v 1.14 1994/01/22 21:52:04 rgrimes Exp $
* $Id: isa.c,v 1.15 1994/04/02 07:00:46 davidg Exp $
*/
/*
@ -530,7 +530,7 @@ isa_dmarangecheck(caddr_t va, unsigned length, unsigned chan) {
#define ISARAM_END RAM_END
if (phys == 0)
panic("isa_dmacheck: no physical page present");
if (phys > ISARAM_END)
if (phys >= ISARAM_END)
return (1);
if (priorpage) {
if (priorpage + NBPG != phys)

4
sys/i386/isa/isa.c
View File

@ -34,7 +34,7 @@
* SUCH DAMAGE.
*
* from: @(#)isa.c 7.2 (Berkeley) 5/13/91
* $Id: isa.c,v 1.14 1994/01/22 21:52:04 rgrimes Exp $
* $Id: isa.c,v 1.15 1994/04/02 07:00:46 davidg Exp $
*/
/*
@ -530,7 +530,7 @@ isa_dmarangecheck(caddr_t va, unsigned length, unsigned chan) {
#define ISARAM_END RAM_END
if (phys == 0)
panic("isa_dmacheck: no physical page present");
if (phys > ISARAM_END)
if (phys >= ISARAM_END)
return (1);
if (priorpage) {
if (priorpage + NBPG != phys)