On Mon, Jan 12, 2015 at 01:13:54PM -0600, Richard Laager wrote:
Your patch implementing idea 6 fixes the problem for my business application on a stock Ubuntu package (with extra stack enabled).
Thanks.
The key part of option 5 (as described in my previous email) looks like the patch below. It also works with skifree on Vista for me.
-Kevin
--- a/vgasrc/vgaentry.S +++ b/vgasrc/vgaentry.S @@ -111,8 +111,10 @@ entry_10_extrastack: cld pushw %ds // Set %ds:%eax to space on ExtraStack pushl %eax - movw %cs:ExtraStackSeg, %ds - movl $(CONFIG_VGA_EXTRA_STACK_SIZE-PUSHBREGS_size-16), %eax + movw $SEG_BDA, %ax + movw %ax, %ds + movw 0x0e, %ds + movl $(1024-PUSHBREGS_size-16), %eax SAVEBREGS_POP_DSEAX // Save registers on extra stack movl %esp, PUSHBREGS_size+8(%eax) movw %ss, PUSHBREGS_size+12(%eax)