* [PATCH] riscv: Fix build error on rv32 + XIP
@ 2024-01-18 21:21 Alexandre Ghiti
2024-01-18 21:27 ` Randy Dunlap
2024-01-20 21:09 ` patchwork-bot+linux-riscv
0 siblings, 2 replies; 3+ messages in thread
From: Alexandre Ghiti @ 2024-01-18 21:21 UTC (permalink / raw)
To: Randy Dunlap, Stephen Rothwell, Linux Next Mailing List,
Paul Walmsley, Palmer Dabbelt, Albert Ou, Frederik Haxel,
linux-riscv, linux-kernel
Cc: Alexandre Ghiti
commit 66f1e6809397 ("riscv: Make XIP bootable again") restricted page
offset to the sv39 page offset instead of the default sv57, which makes
sense since probably the platforms that target XIP kernels do not
support anything else than sv39 and we do not try to find out the
largest address space supported on XIP kernels (ie set_satp_mode()).
But PAGE_OFFSET_L3 is not defined for rv32, so fix the build error by
restoring the previous behaviour which picks CONFIG_PAGE_OFFSET for rv32.
Fixes: 66f1e6809397 ("riscv: Make XIP bootable again")
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Closes: https://lore.kernel.org/linux-riscv/344dca85-5c48-44e1-bc64-4fa7973edd12@infradead.org/T/#u
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
---
arch/riscv/mm/init.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index f533dd667a83..32cad6a65ccd 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -1060,7 +1060,11 @@ asmlinkage void __init setup_vm(uintptr_t dtb_pa)
kernel_map.virt_addr = KERNEL_LINK_ADDR + kernel_map.virt_offset;
#ifdef CONFIG_XIP_KERNEL
+#ifdef CONFIG_64BIT
kernel_map.page_offset = PAGE_OFFSET_L3;
+#else
+ kernel_map.page_offset = _AC(CONFIG_PAGE_OFFSET, UL);
+#endif
kernel_map.xiprom = (uintptr_t)CONFIG_XIP_PHYS_ADDR;
kernel_map.xiprom_sz = (uintptr_t)(&_exiprom) - (uintptr_t)(&_xiprom);
--
2.39.2
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^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] riscv: Fix build error on rv32 + XIP
2024-01-18 21:21 [PATCH] riscv: Fix build error on rv32 + XIP Alexandre Ghiti
@ 2024-01-18 21:27 ` Randy Dunlap
2024-01-20 21:09 ` patchwork-bot+linux-riscv
1 sibling, 0 replies; 3+ messages in thread
From: Randy Dunlap @ 2024-01-18 21:27 UTC (permalink / raw)
To: Alexandre Ghiti, Stephen Rothwell, Linux Next Mailing List,
Paul Walmsley, Palmer Dabbelt, Albert Ou, Frederik Haxel,
linux-riscv, linux-kernel
On 1/18/24 13:21, Alexandre Ghiti wrote:
> commit 66f1e6809397 ("riscv: Make XIP bootable again") restricted page
> offset to the sv39 page offset instead of the default sv57, which makes
> sense since probably the platforms that target XIP kernels do not
> support anything else than sv39 and we do not try to find out the
> largest address space supported on XIP kernels (ie set_satp_mode()).
>
> But PAGE_OFFSET_L3 is not defined for rv32, so fix the build error by
> restoring the previous behaviour which picks CONFIG_PAGE_OFFSET for rv32.
>
> Fixes: 66f1e6809397 ("riscv: Make XIP bootable again")
> Reported-by: Randy Dunlap <rdunlap@infradead.org>
> Closes: https://lore.kernel.org/linux-riscv/344dca85-5c48-44e1-bc64-4fa7973edd12@infradead.org/T/#u
> Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
Thanks.
> ---
> arch/riscv/mm/init.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
> index f533dd667a83..32cad6a65ccd 100644
> --- a/arch/riscv/mm/init.c
> +++ b/arch/riscv/mm/init.c
> @@ -1060,7 +1060,11 @@ asmlinkage void __init setup_vm(uintptr_t dtb_pa)
> kernel_map.virt_addr = KERNEL_LINK_ADDR + kernel_map.virt_offset;
>
> #ifdef CONFIG_XIP_KERNEL
> +#ifdef CONFIG_64BIT
> kernel_map.page_offset = PAGE_OFFSET_L3;
> +#else
> + kernel_map.page_offset = _AC(CONFIG_PAGE_OFFSET, UL);
> +#endif
> kernel_map.xiprom = (uintptr_t)CONFIG_XIP_PHYS_ADDR;
> kernel_map.xiprom_sz = (uintptr_t)(&_exiprom) - (uintptr_t)(&_xiprom);
>
--
#Randy
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] riscv: Fix build error on rv32 + XIP
2024-01-18 21:21 [PATCH] riscv: Fix build error on rv32 + XIP Alexandre Ghiti
2024-01-18 21:27 ` Randy Dunlap
@ 2024-01-20 21:09 ` patchwork-bot+linux-riscv
1 sibling, 0 replies; 3+ messages in thread
From: patchwork-bot+linux-riscv @ 2024-01-20 21:09 UTC (permalink / raw)
To: Alexandre Ghiti
Cc: linux-riscv, rdunlap, sfr, linux-next, paul.walmsley, palmer,
aou, haxel, linux-kernel
Hello:
This patch was applied to riscv/linux.git (fixes)
by Palmer Dabbelt <palmer@rivosinc.com>:
On Thu, 18 Jan 2024 22:21:20 +0100 you wrote:
> commit 66f1e6809397 ("riscv: Make XIP bootable again") restricted page
> offset to the sv39 page offset instead of the default sv57, which makes
> sense since probably the platforms that target XIP kernels do not
> support anything else than sv39 and we do not try to find out the
> largest address space supported on XIP kernels (ie set_satp_mode()).
>
> But PAGE_OFFSET_L3 is not defined for rv32, so fix the build error by
> restoring the previous behaviour which picks CONFIG_PAGE_OFFSET for rv32.
>
> [...]
Here is the summary with links:
- riscv: Fix build error on rv32 + XIP
https://git.kernel.org/riscv/c/66f962d8939f
You are awesome, thank you!
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2024-01-18 21:21 [PATCH] riscv: Fix build error on rv32 + XIP Alexandre Ghiti
2024-01-18 21:27 ` Randy Dunlap
2024-01-20 21:09 ` patchwork-bot+linux-riscv
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