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Steal 512KB more from system memory for heap instead of 256KB. We died

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without the extra space. What a pity.
This commit is contained in:
Matt Jacob 2000-09-18 08:19:04 +00:00
parent 8c8c7c234b
commit 81372ff0ed
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=66027
1 changed files with 11 additions and 9 deletions
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20
sys/boot/alpha/common/main.c
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@ -63,6 +63,9 @@ memsize()
return total;
}
/* #define XTRA_PAGES 32 */
#define XTRA_PAGES 64
static void
extend_heap()
{
@ -87,19 +90,18 @@ extend_heap()
}
/*
* We want to extend the heap from 256k to 512k. With 8k pages
* (assumed), we need 32 pages. We take pages from the end of the
* last usable memory region, taking care to avoid the memory used
* by the kernel's message buffer. We allow 4 pages for the
* message buffer.
* We want to extend the heap from 256k up to XTRA_PAGES more pages.
* We take pages from the end of the last usable memory region,
* taking care to avoid the memory used by the kernel's message
* buffer. We allow 4 pages for the message buffer.
*/
startpfn = memc->mddt_pfn + memc->mddt_pg_cnt - 4 - 32;
startpfn = memc->mddt_pfn + memc->mddt_pg_cnt - 4 - XTRA_PAGES;
startva = 0x20040000;
startpte = 0x40000000
+ (((startva >> 23) & 0x3ff) << PAGE_SHIFT)
+ (((startva >> 13) & 0x3ff) << 3);
for (i = 0; i < 32; i++) {
for (i = 0; i < XTRA_PAGES; i++) {
u_int64_t pte;
pte = ((startpfn + i) << 32) | 0x1101;
*(u_int64_t *) (startpte + 8 * i) = pte;
@ -118,9 +120,9 @@ main(void)
* safe.
*/
extend_heap();
setheap((void *)end, (void *)0x20080000);
setheap((void *)end, (void *)(0x20040000 + XTRA_PAGES * 8192));
#ifdef LOADER
#ifdef LOADER
/*
* If this is the two stage disk loader, add the memory used by
* the first stage to the heap.