Author: kib Date: Fri Jan 18 13:43:11 2019 New Revision: 343147 URL: https://svnweb.freebsd.org/changeset/base/343147
Log: i386/PAE busdma: allow more bounce pages. If i386 has more than 4G of memory, allow the same number of busdma bounce pages as for amd64. In fact, in this case bouncing sometimes is much heavier than on amd64. Reviewed by: markj Tested by: pho Sponsored by: The FreeBSD Foundation MFC after: 2 weeks Differential revision: https://reviews.freebsd.org/D18854 Modified: head/sys/x86/x86/busdma_bounce.c Modified: head/sys/x86/x86/busdma_bounce.c ============================================================================== --- head/sys/x86/x86/busdma_bounce.c Fri Jan 18 13:38:56 2019 (r343146) +++ head/sys/x86/x86/busdma_bounce.c Fri Jan 18 13:43:11 2019 (r343147) @@ -57,7 +57,7 @@ __FBSDID("$FreeBSD$"); #include <x86/include/busdma_impl.h> #ifdef __i386__ -#define MAX_BPAGES 512 +#define MAX_BPAGES (Maxmem > atop(0x100000000ULL) ? 8192 : 512) #else #define MAX_BPAGES 8192 #endif _______________________________________________ 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"
