Re: [RFC PATCH v1 8/9] arm64: Add unsafe_copy_from_user()

Will Deacon <[email protected]> Wed, 29 Apr 2026 12:26:30 +0100
Newsgroups gmane.linux.ports.alpha,gmane.linux.kernel,gmane.linux.kernel.arc,gmane.linux.ports.arm.kernel,gmane.linux.ports.mips,gmane.linux.ports.ppc64.devel,gmane.comp.emulators.kvm.devel,gmane.linux.ports.riscv,gmane.linux.ports.sparc,gmane.linux.uml.devel,gmane.linux.kernel.efi,gmane.comp.freedesktop.amd-gfx,gmane.comp.video.dri.devel,gmane.comp.freedesktop.xorg.drivers.intel,gmane.linux.network,gmane.linux.kernel.wireless.general,gmane.linux.kernel.spi.devel,gmane.linux.drivers.video-input-infrastructure,gmane.linux.serial,gmane.linux.usb.general,gmane.comp.emulators.xen.devel,gmane.linux.file-systems,gmane.linux.kernel.bpf,gmane.linux.kernel.mm,gmane.linux.x25,gmane.linux.kernel.rust,gmane.linux.sound,gmane.linux.ports.hexagon,gmane.linux.ports.parisc,gmane.linux.ports.sh.devel,gmane.linux.kernel.cross-arch
Message-ID <afHq5vyNUJzxVwDV@willie-the-truck> 
[+Catalin]

On Mon, Apr 27, 2026 at 07:13:49PM +0200, Christophe Leroy (CS GROUP) wrote:
> At the time being, x86 and arm64 are missing unsafe_copy_from_user().
> 
> Add it.
> 
> Signed-off-by: Christophe Leroy (CS GROUP) <[email protected]>
> ---
>  arch/arm64/include/asm/uaccess.h | 29 ++++++++++++++++++++++++-----
>  1 file changed, 24 insertions(+), 5 deletions(-)

Why?

And please cc the arm64 maintainers on arm64 patches next time. You've
managed to cc most of the world apart from us.

Will