Date: Tue, 29 Apr 2014 17:22:30 +0000 (UTC) From: Peter Grehan <grehan@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r265098 - head/sys/kern Message-ID: <201404291722.s3THMUBN046786@svn.freebsd.org>
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Author: grehan Date: Tue Apr 29 17:22:29 2014 New Revision: 265098 URL: http://svnweb.freebsd.org/changeset/base/265098 Log: Bump WITNESS_PENDLIST by MAXCPU to account for the pmap pvlist locks which are scaled by MAXCPU. This allows an amd64 system to boot with MAXCPU set to 256, which is currently FreeBSD's hard limit without x2apic support. Compile-tested for other arch's. PR: 185831 Discussed with: jhb MFC after: 3 weeks Modified: head/sys/kern/subr_witness.c Modified: head/sys/kern/subr_witness.c ============================================================================== --- head/sys/kern/subr_witness.c Tue Apr 29 16:57:25 2014 (r265097) +++ head/sys/kern/subr_witness.c Tue Apr 29 17:22:29 2014 (r265098) @@ -135,7 +135,7 @@ __FBSDID("$FreeBSD$"); #define WITNESS_COUNT 1536 #define WITNESS_CHILDCOUNT (WITNESS_COUNT * 4) #define WITNESS_HASH_SIZE 251 /* Prime, gives load factor < 2 */ -#define WITNESS_PENDLIST 1024 +#define WITNESS_PENDLIST (1024 + MAXCPU) /* Allocate 256 KB of stack data space */ #define WITNESS_LO_DATA_COUNT 2048
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