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| author |   Christophe Leroy <christophe.leroy@c-s.fr> | 2020-03-10 17:29:12 +0000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2020-03-25 12:09:27 +1100 |
| commit | 697ece78f8f749aeea40f2711389901f0974017a (patch) | |
| tree | 9fa49406f4fab3d95af9d8376f9c0fe63753fc0a /drivers/pci/hotplug | |
| parent | powerpc/kasan: Fix kasan_remap_early_shadow_ro() (diff) | |
| download | wireguard-linux-697ece78f8f749aeea40f2711389901f0974017a.tar.xz wireguard-linux-697ece78f8f749aeea40f2711389901f0974017a.zip | |
powerpc/32s: reorder Linux PTE bits to better match Hash PTE bits.
Reorder Linux PTE bits to (almost) match Hash PTE bits.
RW Kernel : PP = 00
RO Kernel : PP = 00
RW User : PP = 01
RO User : PP = 11
So naturally, we should have
_PAGE_USER = 0x001
_PAGE_RW = 0x002
Today 0x001 and 0x002 and _PAGE_PRESENT and _PAGE_HASHPTE which
both are software only bits.
Switch _PAGE_USER and _PAGE_PRESET
Switch _PAGE_RW and _PAGE_HASHPTE
This allows to remove a few insns.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/c4d6c18a7f8d9d3b899bc492f55fbc40ef38896a.1583861325.git.christophe.leroy@c-s.fr
Diffstat (limited to 'drivers/pci/hotplug')
0 files changed, 0 insertions, 0 deletions