Author: alfredo Date: Wed Apr 15 20:33:09 2020 New Revision: 359992 URL: https://svnweb.freebsd.org/changeset/base/359992
Log: powerpc: autosize bpvo based on physical memory Default moea64_bpvo_pool_size 327680 was insufficient for initial memory mapping at boot time on systems with, for example, 64G and no huge pages enabled. Submitted by: Andre Silva <afscoe...@gmail.com> Reviewed by: jhibbits, alfredo Approved by: jhibbits (mentor) Sponsored by: Eldorado Research Institute (eldorado.org.br) Differential Revision: https://reviews.freebsd.org/D24102 Modified: head/sys/powerpc/aim/mmu_oea64.c Modified: head/sys/powerpc/aim/mmu_oea64.c ============================================================================== --- head/sys/powerpc/aim/mmu_oea64.c Wed Apr 15 20:28:20 2020 (r359991) +++ head/sys/powerpc/aim/mmu_oea64.c Wed Apr 15 20:33:09 2020 (r359992) @@ -65,6 +65,7 @@ __FBSDID("$FreeBSD$"); #include <sys/systm.h> #include <sys/vmmeter.h> #include <sys/smp.h> +#include <sys/reboot.h> #include <sys/kdb.h> @@ -184,10 +185,12 @@ uma_zone_t moea64_pvo_zone; /* zone for pvo entries */ static struct pvo_entry *moea64_bpvo_pool; static int moea64_bpvo_pool_index = 0; -static int moea64_bpvo_pool_size = 327680; +static int moea64_bpvo_pool_size = 0; SYSCTL_INT(_machdep, OID_AUTO, moea64_allocated_bpvo_entries, CTLFLAG_RD, &moea64_bpvo_pool_index, 0, ""); +#define BPVO_POOL_SIZE 327680 /* Sensible historical default value */ +#define BPVO_POOL_EXPANSION_FACTOR 3 #define VSID_NBPW (sizeof(u_int32_t) * 8) #ifdef __powerpc64__ #define NVSIDS (NPMAPS * 16) @@ -916,6 +919,20 @@ moea64_mid_bootstrap(mmu_t mmup, vm_offset_t kernelsta * Initialise the bootstrap pvo pool. */ TUNABLE_INT_FETCH("machdep.moea64_bpvo_pool_size", &moea64_bpvo_pool_size); + if (moea64_bpvo_pool_size == 0) { + if (!hw_direct_map) + moea64_bpvo_pool_size = ((ptoa((uintmax_t)physmem) * sizeof(struct vm_page)) / + (PAGE_SIZE * PAGE_SIZE)) * BPVO_POOL_EXPANSION_FACTOR; + else + moea64_bpvo_pool_size = BPVO_POOL_SIZE; + } + + if (boothowto & RB_VERBOSE) { + printf("mmu_oea64: bpvo pool entries = %d, bpvo pool size = %ju MB\n", + moea64_bpvo_pool_size, + moea64_bpvo_pool_size*sizeof(struct pvo_entry) / 1048576); + } + moea64_bpvo_pool = (struct pvo_entry *)moea64_bootstrap_alloc( moea64_bpvo_pool_size*sizeof(struct pvo_entry), PAGE_SIZE); moea64_bpvo_pool_index = 0; _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
