Date: Tue, 21 Jun 2011 20:47:04 +0000 (UTC) From: Marius Strobl <marius@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r223377 - head/sys/sparc64/sparc64 Message-ID: <201106212047.p5LKl4jK016221@svn.freebsd.org>
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Author: marius Date: Tue Jun 21 20:47:03 2011 New Revision: 223377 URL: http://svn.freebsd.org/changeset/base/223377 Log: On machines where we don't need to lock the kernel TSB into the dTLB and thus may basically use the entire 64-bit kernel address space increase the kernel virtual memory to not be limited by VM_KMEM_SIZE_MAX. Modified: head/sys/sparc64/sparc64/pmap.c Modified: head/sys/sparc64/sparc64/pmap.c ============================================================================== --- head/sys/sparc64/sparc64/pmap.c Tue Jun 21 20:44:06 2011 (r223376) +++ head/sys/sparc64/sparc64/pmap.c Tue Jun 21 20:47:03 2011 (r223377) @@ -384,11 +384,12 @@ pmap_bootstrap(u_int cpu_impl) * public documentation is available for these, the latter just might * not support it, yet. */ - virtsz = roundup(physsz, PAGE_SIZE_4M << (PAGE_SHIFT - TTE_SHIFT)); if (cpu_impl == CPU_IMPL_SPARC64V || - cpu_impl >= CPU_IMPL_ULTRASPARCIIIp) + cpu_impl >= CPU_IMPL_ULTRASPARCIIIp) { tsb_kernel_ldd_phys = 1; - else { + virtsz = roundup(5 / 3 * physsz, PAGE_SIZE_4M << + (PAGE_SHIFT - TTE_SHIFT)); + } else { dtlb_slots_avail = 0; for (i = 0; i < dtlb_slots; i++) { data = dtlb_get_data(i); @@ -401,6 +402,8 @@ pmap_bootstrap(u_int cpu_impl) if (cpu_impl >= CPU_IMPL_ULTRASPARCI && cpu_impl < CPU_IMPL_ULTRASPARCIII) dtlb_slots_avail /= 2; + virtsz = roundup(physsz, PAGE_SIZE_4M << + (PAGE_SHIFT - TTE_SHIFT)); virtsz = MIN(virtsz, (dtlb_slots_avail * PAGE_SIZE_4M) << (PAGE_SHIFT - TTE_SHIFT)); }
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