[PATCH] ARM: mm: drop kimage_voffset which was only used by KVM

[PATCH] ARM: mm: drop kimage_voffset which was only used by KVM

[Ard Biesheuvel]

Now that KVM support has been removed from the 32-bit ARM port,
drop the export kimage_voffset symbol, which no longer has any
users.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
 arch/arm/mm/mmu.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index ec8d0008bfa1..36660bb031d1 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -74,8 +74,6 @@ struct cachepolicy {
 	pteval_t	pte;
 };
 
-unsigned long kimage_voffset __ro_after_init;
-
 static struct cachepolicy cache_policies[] __initdata = {
 	{
 		.policy		= "uncached",
@@ -1636,9 +1634,6 @@ void __init paging_init(const struct machine_desc *mdesc)
 
 	empty_zero_page = virt_to_page(zero_page);
 	__flush_dcache_page(NULL, empty_zero_page);
-
-	/* Compute the virt/idmap offset, mostly for the sake of KVM */
-	kimage_voffset = (unsigned long)&kimage_voffset - virt_to_idmap(&kimage_voffset);
 }
 
 void __init early_mm_init(const struct machine_desc *mdesc)
-- 
2.17.1


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Re: [PATCH] ARM: mm: drop kimage_voffset which was only used by KVM

[Marc Zyngier]

On 2020-04-13 11:36, Ard Biesheuvel wrote:
> Now that KVM support has been removed from the 32-bit ARM port,
> drop the export kimage_voffset symbol, which no longer has any
> users.
> 
> Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
> ---
>  arch/arm/mm/mmu.c | 5 -----
>  1 file changed, 5 deletions(-)
> 
> diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
> index ec8d0008bfa1..36660bb031d1 100644
> --- a/arch/arm/mm/mmu.c
> +++ b/arch/arm/mm/mmu.c
> @@ -74,8 +74,6 @@ struct cachepolicy {
>  	pteval_t	pte;
>  };
> 
> -unsigned long kimage_voffset __ro_after_init;
> -
>  static struct cachepolicy cache_policies[] __initdata = {
>  	{
>  		.policy		= "uncached",
> @@ -1636,9 +1634,6 @@ void __init paging_init(const struct machine_desc 
> *mdesc)
> 
>  	empty_zero_page = virt_to_page(zero_page);
>  	__flush_dcache_page(NULL, empty_zero_page);
> -
> -	/* Compute the virt/idmap offset, mostly for the sake of KVM */
> -	kimage_voffset = (unsigned long)&kimage_voffset -
> virt_to_idmap(&kimage_voffset);
>  }
> 
>  void __init early_mm_init(const struct machine_desc *mdesc)

Acked-by: Marc Zyngier <maz@kernel.org>

Thanks,

         M.
-- 
Jazz is not dead. It just smells funny...

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