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| author | nwhitehorn <nwhitehorn@FreeBSD.org> | 2010-07-31 21:35:15 +0000 |
|---|---|---|
| committer | nwhitehorn <nwhitehorn@FreeBSD.org> | 2010-07-31 21:35:15 +0000 |
| commit | 1a14bf4648a73ec1bef9d8b27aefcd912d6a1f2f (patch) | |
| tree | 90743fa4b480cb7ba17438a347ff6c673f1e4505 /sys/powerpc/aim/slb.c | |
| parent | b6078715a19dff6c6a77090896b8a42d4b38b1eb (diff) | |
| download | FreeBSD-src-1a14bf4648a73ec1bef9d8b27aefcd912d6a1f2f.zip FreeBSD-src-1a14bf4648a73ec1bef9d8b27aefcd912d6a1f2f.tar.gz | |
Improve hash coverage for kernel page table entries by modifying the kernel
ESID -> VSID map function. This makes ZFS run stably on PowerPC under
heavy loads (repeated simultaneous SVN checkouts and updates).
Diffstat (limited to 'sys/powerpc/aim/slb.c')
| -rw-r--r-- | sys/powerpc/aim/slb.c | 11 |
1 files changed, 2 insertions, 9 deletions
diff --git a/sys/powerpc/aim/slb.c b/sys/powerpc/aim/slb.c index 0990f94..7ea4593 100644 --- a/sys/powerpc/aim/slb.c +++ b/sys/powerpc/aim/slb.c @@ -104,17 +104,10 @@ uint64_t va_to_vsid(pmap_t pm, vm_offset_t va) { struct slb entry; - int large; /* Shortcut kernel case */ - if (pm == kernel_pmap) { - large = 0; - if (hw_direct_map && va < VM_MIN_KERNEL_ADDRESS && - mem_valid(va, 0) == 0) - large = 1; - - return (KERNEL_VSID((uintptr_t)va >> ADDR_SR_SHFT, large)); - } + if (pm == kernel_pmap) + return (KERNEL_VSID((uintptr_t)va >> ADDR_SR_SHFT)); /* * If there is no vsid for this VA, we need to add a new entry |
