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| author | marius <marius@FreeBSD.org> | 2011-06-21 20:47:03 +0000 |
|---|---|---|
| committer | marius <marius@FreeBSD.org> | 2011-06-21 20:47:03 +0000 |
| commit | cee084b03f7ae8330633fa6bdac66995e9d3c1ca (patch) | |
| tree | e80f91ec7ff392a55a9cc280689ff4254b6366ae /sys/sparc64/sparc64/pmap.c | |
| parent | 3eae89419641f05c8322f7d392d24d7e97e7af77 (diff) | |
| download | FreeBSD-src-cee084b03f7ae8330633fa6bdac66995e9d3c1ca.zip FreeBSD-src-cee084b03f7ae8330633fa6bdac66995e9d3c1ca.tar.gz | |
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.
Diffstat (limited to 'sys/sparc64/sparc64/pmap.c')
| -rw-r--r-- | sys/sparc64/sparc64/pmap.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/sys/sparc64/sparc64/pmap.c b/sys/sparc64/sparc64/pmap.c index 876dce3..f917af9 100644 --- a/sys/sparc64/sparc64/pmap.c +++ b/sys/sparc64/sparc64/pmap.c @@ -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)); } |
