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| author | David Daney <ddaney@caviumnetworks.com> | 2009-10-14 21:16:56 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2009-12-17 02:57:01 +0100 |
| commit | 82622284dd2f8791f9759f3cef601520a8bc63b2 (patch) | |
| tree | ee47f43af373d0c021cc83ff9e22925942e9d001 /arch/mips/mipssim/Makefile | |
| parent | MIPS: Add drotr and dins instructions to uasm. (diff) | |
| download | linux-82622284dd2f8791f9759f3cef601520a8bc63b2.tar.xz linux-82622284dd2f8791f9759f3cef601520a8bc63b2.zip | |
MIPS: Put PGD in C0_CONTEXT for 64-bit R2 processors.
Processors that support the mips64r2 ISA can in four instructions
convert a shifted PGD pointer stored in the upper bits of c0_context
into a usable pointer. By doing this we save a memory load and
associated potential cache miss in the TLB exception handlers.
Since the upper bits of c0_context were holding the CPU number, we
move this to the upper bits of c0_xcontext which doesn't have enough
bits to hold the PGD pointer, but has plenty for the CPU number.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/mipssim/Makefile')
0 files changed, 0 insertions, 0 deletions