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physmem: zero entire array

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As a convenience to callers, who might allocate the array on the stack.
An empty/zero-valued range indicates the end of the physmap entries.

Remove the now-redundant calls to bzero() at the call site.

Reviewed by:	andrew
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D45318
This commit is contained in:
Mitchell Horne 2024-06-04 20:17:13 -03:00
parent 480ad40553
commit 191e6a6049
2 changed files with 2 additions and 2 deletions
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1
sys/arm64/arm64/pmap.c
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@ -1437,7 +1437,6 @@ pmap_bootstrap_san1(vm_offset_t va, int scale)
* Rebuild physmap one more time, we may have excluded more regions from
* allocation since pmap_bootstrap().
*/
bzero(physmap, sizeof(physmap));
physmap_idx = physmem_avail(physmap, nitems(physmap));
physmap_idx /= 2;

3
sys/kern/subr_physmem.c
View file

@ -189,6 +189,8 @@ regions_to_avail(vm_paddr_t *avail, uint32_t exflags, size_t maxavail,
const struct region *exp, *hwp;
uint64_t availsz;
bzero(avail, maxavail * sizeof(vm_paddr_t));
totalmem = 0;
availmem = 0;
availsz = 0;
@ -587,7 +589,6 @@ ram_attach(device_t dev)
rid = 0;
/* Get the avail list. */
bzero(avail_list, sizeof(avail_list));
regions_to_avail(avail_list, EXFLAG_NOALLOC | EXFLAG_NODUMP,
PHYS_AVAIL_COUNT, 0, NULL, NULL);