Re: [patch V2 1/6] ARM: uaccess: Implement missing __get_user_asm_dword()

[Russell King (Oracle)]

On Tue, Sep 16, 2025 at 06:33:09PM +0200, Thomas Gleixner wrote:
> When CONFIG_CPU_SPECTRE=n then get_user() is missing the 8 byte ASM variant
> for no real good reason. This prevents using get_user(u64) in generic code.

I'm sure you will eventually discover the reason when you start getting
all the kernel build bot warnings that will result from a cast from a
u64 to a pointer.

You're not the first to try implementing this.

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