Re: [PATCH 05/10] arm64/vdso: Use generic union vdso_data_store

From: Will Deacon
Date: Thu Feb 22 2024 - 10:44:41 EST


On Mon, Feb 19, 2024 at 04:39:34PM +0100, Anna-Maria Behnsen wrote:
> There is already a generic union definition for vdso_data_store in vdso
> datapage header.
>
> Use this definition to prevent code duplication.
>
> Signed-off-by: Anna-Maria Behnsen <anna-maria@xxxxxxxxxxxxx>
> Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
> Cc: Will Deacon <will@xxxxxxxxxx>
> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> ---
> arch/arm64/kernel/vdso.c | 5 +----
> 1 file changed, 1 insertion(+), 4 deletions(-)
>
> diff --git a/arch/arm64/kernel/vdso.c b/arch/arm64/kernel/vdso.c
> index 5562daf38a22..89b6e7840002 100644
> --- a/arch/arm64/kernel/vdso.c
> +++ b/arch/arm64/kernel/vdso.c
> @@ -69,10 +69,7 @@ static struct vdso_abi_info vdso_info[] __ro_after_init = {
> /*
> * The vDSO data page.
> */
> -static union {
> - struct vdso_data data[CS_BASES];
> - u8 page[PAGE_SIZE];
> -} vdso_data_store __page_aligned_data;
> +static union vdso_data_store vdso_data_store __page_aligned_data;
> struct vdso_data *vdso_data = vdso_data_store.data;
>
> static int vdso_mremap(const struct vm_special_mapping *sm,
> --
> 2.39.2

Acked-by: Will Deacon <will@xxxxxxxxxx>

Will