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(parent: cd99ddb) | patch
powerpc/8xx: remove unused _PAGE_WRITETHRU
authorChristophe Leroy <christophe.leroy@c-s.fr>
Fri, 12 Jan 2018 12:45:25 +0000 (13:45 +0100)
committerMichael Ellerman <mpe@ellerman.id.au>
Tue, 16 Jan 2018 12:47:13 +0000 (23:47 +1100)
commit5f356497c38448874f2d491cd214e9c283f5592d
treee28807f19159c48b88ad504788b7f294b857a0f7tree | snapshot
parentcd99ddbea250ee79027df6c469f51ad9e5452738commit | diff
powerpc/8xx: remove unused _PAGE_WRITETHRU

_PAGE_WRITETHRU is only used in:
* AMIGA_Z2RAM block driver which is never activated on powerPC
* Video/FB driver which is for PPC_PMAC

Therefore, no need to spend time in 8xx TLB miss handlers for
handling it.

And by removing it, we free up bit 20 which then avoids having
to clear it on each TLB miss.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
arch/powerpc/include/asm/nohash/32/pte-8xx.h diff | blob | history
arch/powerpc/include/asm/nohash/pgtable.h diff | blob | history
arch/powerpc/kernel/head_8xx.S diff | blob | history
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