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authorJames Hogan <james.hogan@imgtec.com>2016-04-19 09:25:00 +0100
committerRalf Baechle <ralf@linux-mips.org>2016-05-13 14:02:24 +0200
commit14bc241443e126c62fcbf571b7d4c79740debc58 (patch)
tree13104303036707ae305ed320d008ef2c53225e3c /Documentation
parent12822570a29bdc12c69fca2c021753cb5ce319c5 (diff)
MIPS: Fix HTW config on XPA kernel without LPA enabled
The hardware page table walker (HTW) configuration is broken on XPA kernels where XPA couldn't be enabled (either nohtw or the hardware doesn't support it). This is because the PWSize.PTEW field (PTE width) was only set to 8 bytes (an extra shift of 1) in config_htw_params() if PageGrain.ELPA (enable large physical addressing) is set. On an XPA kernel though the size of PTEs is fixed at 8 bytes regardless of whether XPA could actually be enabled. Fix the initialisation of this field based on sizeof(pte_t) instead. Fixes: c5b367835cfc ("MIPS: Add support for XPA.") Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Steven J. Hill <sjhill@realitydiluted.com> Cc: Paul Burton <paul.burton@imgtec.com> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/13113/ Signed-off-by: Paul Burton <paul.burton@imgtec.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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