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Bump MAX_HWCNT and MAX_EXCNT.

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These limits are hit on the ThunderX.  Also make
arm_physmem_exclude_region() panic rather than fail silently if the
limit on excluded regions is reached.

PR:		231064
Reviewed by:	andrew
Approved by:	re (kib)
MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D17073
This commit is contained in:
Mark Johnston 2018-09-08 21:51:47 +00:00
parent 5a7f993702
commit 88db0afa82
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=338537
1 changed files with 7 additions and 5 deletions
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12
sys/arm/arm/physmem.c
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@ -48,8 +48,8 @@ __FBSDID("$FreeBSD$");
* that can be allocated, or both, depending on the exclusion flags associated
* with the region.
*/
#define MAX_HWCNT 10
#define MAX_EXCNT 10
#define MAX_HWCNT 16
#define MAX_EXCNT 16
#if defined(__arm__)
#define MAX_PHYS_ADDR 0xFFFFFFFFull
@ -359,7 +359,8 @@ arm_physmem_hardware_region(uint64_t pa, uint64_t sz)
/*
* Add an exclusion region.
*/
void arm_physmem_exclude_region(vm_paddr_t pa, vm_size_t sz, uint32_t exflags)
void
arm_physmem_exclude_region(vm_paddr_t pa, vm_size_t sz, uint32_t exflags)
{
vm_offset_t adj;
@ -371,8 +372,9 @@ void arm_physmem_exclude_region(vm_paddr_t pa, vm_size_t sz, uint32_t exflags)
pa = trunc_page(pa);
sz = round_page(sz + adj);
if (excnt < nitems(exregions))
excnt = insert_region(exregions, excnt, pa, sz, exflags);
if (excnt >= nitems(exregions))
panic("failed to exclude region %#lx-%#lx", pa, pa + sz);
excnt = insert_region(exregions, excnt, pa, sz, exflags);
}
size_t