[PATCH] riscv: enable HAVE_ARCH_HUGE_VMAP for XIP kernel

[PATCH] riscv: enable HAVE_ARCH_HUGE_VMAP for XIP kernel

[Nam Cao]

HAVE_ARCH_HUGE_VMAP also works on XIP kernel, so remove its dependency on
!XIP_KERNEL.

This also fixes a boot problem for XIP kernel introduced by the commit in
"Fixes:". This commit used huge page mapping for vmemmap, but huge page
vmap was not enabled for XIP kernel.

Fixes: ff172d4818ad ("riscv: Use hugepage mappings for vmemmap")
Signed-off-by: Nam Cao <namcao@linutronix.de>
Cc: <stable@vger.kernel.org>
---
This patch replaces:
https://patchwork.kernel.org/project/linux-riscv/patch/20240508173116.2866192-1-namcao@linutronix.de/

 arch/riscv/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index b94176e25be1..0525ee2d63c7 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -106,7 +106,7 @@ config RISCV
 	select HAS_IOPORT if MMU
 	select HAVE_ARCH_AUDITSYSCALL
 	select HAVE_ARCH_HUGE_VMALLOC if HAVE_ARCH_HUGE_VMAP
-	select HAVE_ARCH_HUGE_VMAP if MMU && 64BIT && !XIP_KERNEL
+	select HAVE_ARCH_HUGE_VMAP if MMU && 64BIT
 	select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
 	select HAVE_ARCH_JUMP_LABEL_RELATIVE if !XIP_KERNEL
 	select HAVE_ARCH_KASAN if MMU && 64BIT
-- 
2.39.2


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Re: [PATCH] riscv: enable HAVE_ARCH_HUGE_VMAP for XIP kernel

[Alexandre Ghiti]

Hi Nam,

On 26/05/2024 13:01, Nam Cao wrote:
> HAVE_ARCH_HUGE_VMAP also works on XIP kernel, so remove its dependency on
> !XIP_KERNEL.
>
> This also fixes a boot problem for XIP kernel introduced by the commit in
> "Fixes:". This commit used huge page mapping for vmemmap, but huge page
> vmap was not enabled for XIP kernel.
>
> Fixes: ff172d4818ad ("riscv: Use hugepage mappings for vmemmap")
> Signed-off-by: Nam Cao <namcao@linutronix.de>
> Cc: <stable@vger.kernel.org>
> ---
> This patch replaces:
> https://patchwork.kernel.org/project/linux-riscv/patch/20240508173116.2866192-1-namcao@linutronix.de/
>
>   arch/riscv/Kconfig | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
> index b94176e25be1..0525ee2d63c7 100644
> --- a/arch/riscv/Kconfig
> +++ b/arch/riscv/Kconfig
> @@ -106,7 +106,7 @@ config RISCV
>   	select HAS_IOPORT if MMU
>   	select HAVE_ARCH_AUDITSYSCALL
>   	select HAVE_ARCH_HUGE_VMALLOC if HAVE_ARCH_HUGE_VMAP
> -	select HAVE_ARCH_HUGE_VMAP if MMU && 64BIT && !XIP_KERNEL
> +	select HAVE_ARCH_HUGE_VMAP if MMU && 64BIT
>   	select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
>   	select HAVE_ARCH_JUMP_LABEL_RELATIVE if !XIP_KERNEL
>   	select HAVE_ARCH_KASAN if MMU && 64BIT


Great, thanks!

Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>

Alex


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Re: [PATCH] riscv: enable HAVE_ARCH_HUGE_VMAP for XIP kernel

[patchwork-bot+linux-riscv]

Hello:

This patch was applied to riscv/linux.git (fixes)
by Palmer Dabbelt <palmer@rivosinc.com>:

On Sun, 26 May 2024 13:01:04 +0200 you wrote:
> HAVE_ARCH_HUGE_VMAP also works on XIP kernel, so remove its dependency on
> !XIP_KERNEL.
> 
> This also fixes a boot problem for XIP kernel introduced by the commit in
> "Fixes:". This commit used huge page mapping for vmemmap, but huge page
> vmap was not enabled for XIP kernel.
> 
> [...]

Here is the summary with links:
  - riscv: enable HAVE_ARCH_HUGE_VMAP for XIP kernel
    https://git.kernel.org/riscv/c/7bed51617401

You are awesome, thank you!
-- 
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