From: Kefeng Wang <wangkefeng.wang@huawei.com>
To: Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
<linux-riscv@lists.infradead.org>, <linux-kernel@vger.kernel.org>
Cc: Hulk Robot <hulkci@huawei.com>, Kefeng Wang <wangkefeng.wang@huawei.com>
Subject: [PATCH 03/10] riscv: Add pgprot_writecombine/device and PAGE_SHARED defination if NOMMU
Date: Mon, 11 May 2020 10:19:54 +0800 [thread overview]
Message-ID: <20200511022001.179767-4-wangkefeng.wang@huawei.com> (raw)
In-Reply-To: <20200511022001.179767-1-wangkefeng.wang@huawei.com>
Some drivers use PAGE_SHARED, pgprot_writecombine()/pgprot_device(),
add the defination to fix build error if NOMMU.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
---
arch/riscv/include/asm/mmio.h | 2 ++
arch/riscv/include/asm/pgtable.h | 1 +
2 files changed, 3 insertions(+)
diff --git a/arch/riscv/include/asm/mmio.h b/arch/riscv/include/asm/mmio.h
index a2c809df2733..56053c9838b2 100644
--- a/arch/riscv/include/asm/mmio.h
+++ b/arch/riscv/include/asm/mmio.h
@@ -16,6 +16,8 @@
#ifndef CONFIG_MMU
#define pgprot_noncached(x) (x)
+#define pgprot_writecombine(x) (x)
+#define pgprot_device(x) (x)
#endif /* CONFIG_MMU */
/* Generic IO read/write. These perform native-endian accesses. */
diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h
index 780dd1d4f720..a12d343e080a 100644
--- a/arch/riscv/include/asm/pgtable.h
+++ b/arch/riscv/include/asm/pgtable.h
@@ -470,6 +470,7 @@ static inline int ptep_clear_flush_young(struct vm_area_struct *vma,
#else /* CONFIG_MMU */
+#define PAGE_SHARED __pgprot(0)
#define PAGE_KERNEL __pgprot(0)
#define swapper_pg_dir NULL
#define TASK_SIZE 0xffffffffUL
--
2.26.2
next prev parent reply other threads:[~2020-05-11 2:18 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-11 2:19 [PATCH 00/10] riscv: make riscv build happier Kefeng Wang
2020-05-11 2:19 ` [PATCH 01/10] riscv: Fix unmet direct dependencies built based on SOC_VIRT Kefeng Wang
2020-05-13 21:14 ` Palmer Dabbelt
2020-05-11 2:19 ` [PATCH 02/10] riscv: stacktrace: Fix undefined reference to `walk_stackframe' Kefeng Wang
2020-05-11 2:19 ` Kefeng Wang [this message]
2020-05-11 2:19 ` [PATCH 04/10] riscv: Fix print_vm_layout build error if NOMMU Kefeng Wang
2020-05-14 10:10 ` Alex Ghiti
2020-05-14 11:42 ` Kefeng Wang
2020-05-14 11:53 ` [PATCH v2] " Kefeng Wang
2020-05-20 22:49 ` Palmer Dabbelt
2020-05-11 2:19 ` [PATCH 05/10] riscv: Disable ARCH_HAS_DEBUG_WX " Kefeng Wang
2020-05-13 21:14 ` Palmer Dabbelt
2020-05-14 8:26 ` Kefeng Wang
2020-05-11 2:19 ` [PATCH 06/10] riscv: Disable ARCH_HAS_DEBUG_VIRTUAL " Kefeng Wang
2020-05-11 2:19 ` [PATCH 07/10] riscv: Make SYS_SUPPORTS_HUGETLBFS depends on MMU Kefeng Wang
2020-05-13 21:14 ` Palmer Dabbelt
2020-05-11 2:19 ` [PATCH 08/10] riscv: pgtable: Fix __kernel_map_pages build error if NOMMU Kefeng Wang
2020-05-11 2:20 ` [PATCH 09/10] timer-riscv: Fix undefined riscv_time_val Kefeng Wang
2020-05-13 21:14 ` Palmer Dabbelt
2020-05-18 14:09 ` Daniel Lezcano
2020-05-18 15:40 ` Kefeng Wang
2020-05-18 20:23 ` Daniel Lezcano
2020-05-19 12:39 ` Kefeng Wang
2020-05-19 13:51 ` Daniel Lezcano
2020-05-20 1:14 ` Anup Patel
2020-05-20 2:57 ` Kefeng Wang
2020-05-11 2:20 ` [PATCH 10/10] riscv: mmiowb: Fix implicit declaration of function 'smp_processor_id' Kefeng Wang
2020-05-13 21:14 ` [PATCH 00/10] riscv: make riscv build happier Palmer Dabbelt
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