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(parent: d5f17ee) | patch
powerpc/kconfig: make _etext and data areas alignment configurable on 8xx
authorChristophe Leroy <christophe.leroy@c-s.fr>
Thu, 21 Feb 2019 19:08:52 +0000 (19:08 +0000)
committerMichael Ellerman <mpe@ellerman.id.au>
Sat, 23 Feb 2019 10:04:32 +0000 (21:04 +1100)
commit8f54a6f7406ee3b7b528c3ff569f6a51295b2608
treea1d056a8298d442a492a2830d8f612c342732665tree | snapshot
parentd5f17ee96447736a84bc44ffc4b0dddb1b519222commit | diff
powerpc/kconfig: make _etext and data areas alignment configurable on 8xx

On 8xx, large pages (512kb or 8M) are used to map kernel linear
memory. Aligning to 8M reduces TLB misses as only 8M pages are used
in that case. We make 8M the default for data.

This patchs allows the user to do it via Kconfig.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
arch/powerpc/Kconfig diff | blob | history
arch/powerpc/kernel/head_8xx.S diff | blob | history
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