From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
To: benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au
Cc: linuxppc-dev@lists.ozlabs.org,
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Subject: [PATCH V2 06/10] powerpc/mm: Compile out radix related functions if RADIX_MMU is disabled
Date: Wed, 8 Jun 2016 19:55:54 +0530 [thread overview]
Message-ID: <1465395958-21349-7-git-send-email-aneesh.kumar@linux.vnet.ibm.com> (raw)
In-Reply-To: <1465395958-21349-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com>
Currently we depend on mmu_has_feature to evalute to zero based on
MMU_FTRS_POSSIBLE mask. In a later patch, we want to update
radix_enabled() to runtime update the conditional operation to a jump
instruction. This implies we cannot depend on MMU_FTRS_POSSIBLE mask.
Instead define radix_enabled to return 0 if RADIX_MMU is not enabled.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
---
arch/powerpc/include/asm/book3s/64/mmu.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/powerpc/include/asm/book3s/64/mmu.h b/arch/powerpc/include/asm/book3s/64/mmu.h
index 5854263d4d6e..d4eda6420523 100644
--- a/arch/powerpc/include/asm/book3s/64/mmu.h
+++ b/arch/powerpc/include/asm/book3s/64/mmu.h
@@ -23,7 +23,12 @@ struct mmu_psize_def {
};
extern struct mmu_psize_def mmu_psize_defs[MMU_PAGE_COUNT];
+#ifdef CONFIG_PPC_RADIX_MMU
#define radix_enabled() mmu_has_feature(MMU_FTR_RADIX)
+#else
+#define radix_enabled() (0)
+#endif
+
#endif /* __ASSEMBLY__ */
--
2.7.4
next prev parent reply other threads:[~2016-06-08 14:26 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-08 14:25 [PATCH V2 00/10] Fixes for Radix support Aneesh Kumar K.V
2016-06-08 14:25 ` [PATCH V2 01/10] Fix .long's in mm/tlb-radix.c to more meaningful Aneesh Kumar K.V
2016-06-08 14:25 ` [PATCH V2 02/10] powerpc/mm/radix: Update to tlb functions ric argument Aneesh Kumar K.V
2016-06-15 12:37 ` [V2, " Michael Ellerman
2016-06-08 14:25 ` [PATCH V2 03/10] powerpc/mm/radix: Flush page walk cache when freeing page table Aneesh Kumar K.V
2016-06-15 12:37 ` [V2, " Michael Ellerman
2016-06-08 14:25 ` [PATCH V2 04/10] powerpc/mm/radix: Update LPCR HR bit as per ISA Aneesh Kumar K.V
2016-06-08 14:25 ` [PATCH V2 05/10] powerpc/mm: use _raw variant of page table accessors Aneesh Kumar K.V
2016-06-08 14:25 ` Aneesh Kumar K.V [this message]
2016-06-08 14:25 ` [PATCH V2 07/10] powerpc/hash: Use the correct ppp mask when updating hpte Aneesh Kumar K.V
2016-06-15 12:37 ` [V2, " Michael Ellerman
2016-06-08 14:25 ` [PATCH V2 08/10] powerpc/mm: Clear top 16 bits of va only on older cpus Aneesh Kumar K.V
2016-06-09 6:19 ` Aneesh Kumar K.V
2016-06-14 4:57 ` [V2, " Michael Ellerman
2016-06-14 7:13 ` Aneesh Kumar K.V
2016-06-08 14:25 ` [PATCH V2 09/10] powerpc/mm: Print formation regarding the the MMU mode Aneesh Kumar K.V
2016-06-08 14:25 ` [PATCH V2 10/10] powerpc/mm/hash: Update SDR1 size encoding as documented in ISA 3.0 Aneesh Kumar K.V
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