From: guoren@kernel.org
To: palmer@rivosinc.com
Cc: linux-riscv@lists.infradead.org,
Guo Ren <guoren@linux.alibaba.com>, Guo Ren <guoren@kernel.org>
Subject: [RFC PATCH 1/4] riscv: Optimize satp_mode data type
Date: Tue, 5 Jul 2022 06:05:20 -0400 [thread overview]
Message-ID: <20220705100523.1204595-2-guoren@kernel.org> (raw)
In-Reply-To: <20220705100523.1204595-1-guoren@kernel.org>
From: Guo Ren <guoren@linux.alibaba.com>
Fixup satp_mode data type. Use ulong instead of u64 for rv32
compatibility. Because the u64 type didn't cause any real problem, make
it as optimized.
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
---
arch/riscv/include/asm/pgtable.h | 2 +-
arch/riscv/mm/init.c | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h
index 1d1be9d9419c..edc68759b69d 100644
--- a/arch/riscv/include/asm/pgtable.h
+++ b/arch/riscv/include/asm/pgtable.h
@@ -833,7 +833,7 @@ extern uintptr_t _dtb_early_pa;
#define dtb_early_va _dtb_early_va
#define dtb_early_pa _dtb_early_pa
#endif /* CONFIG_XIP_KERNEL */
-extern u64 satp_mode;
+extern ulong satp_mode;
extern bool pgtable_l4_enabled;
void paging_init(void);
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index d466ec670e1f..eea147b1a617 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -38,9 +38,9 @@ EXPORT_SYMBOL(kernel_map);
#endif
#ifdef CONFIG_64BIT
-u64 satp_mode __ro_after_init = !IS_ENABLED(CONFIG_XIP_KERNEL) ? SATP_MODE_57 : SATP_MODE_39;
+ulong satp_mode __ro_after_init = !IS_ENABLED(CONFIG_XIP_KERNEL) ? SATP_MODE_57 : SATP_MODE_39;
#else
-u64 satp_mode __ro_after_init = SATP_MODE_32;
+ulong satp_mode __ro_after_init = SATP_MODE_32;
#endif
EXPORT_SYMBOL(satp_mode);
--
2.36.1
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next prev parent reply other threads:[~2022-07-05 10:05 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-05 10:05 [RFC PATCH 0/4] Proof of concept for rv32 svpbmt support guoren
2022-07-05 10:05 ` guoren [this message]
2022-07-05 17:26 ` [RFC PATCH 1/4] riscv: Optimize satp_mode data type Christoph Hellwig
2022-07-05 23:45 ` Guo Ren
2022-07-05 10:05 ` [RFC PATCH 2/4] riscv: Cleanup ERRATA_THEAD_PBMT for rv32 svpbmt compile guoren
2022-07-08 8:50 ` Heiko Stübner
2022-07-09 16:24 ` Guo Ren
2022-07-10 2:25 ` Guo Ren
2022-07-05 10:05 ` [RFC PATCH 3/4] riscv: pgtable: Move svpbmt into the common pgtable-bits.h guoren
2022-07-08 6:10 ` Guo Ren
2022-07-08 9:03 ` Heiko Stübner
2022-07-08 9:49 ` Guo Ren
2022-07-05 10:05 ` [RFC PATCH 4/4] riscv: Change rv32p34 to rv32p31 for svpbmt guoren
2022-07-05 17:22 ` [RFC PATCH 0/4] Proof of concept for rv32 svpbmt support Christoph Hellwig
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