From: Michael Kelley <[email protected]> Sent: Friday, August 28, 2026 8:13 AM > From: Hamza Mahfooz <[email protected]> Sent: Friday, August > 28, 2026 6:32 AM > > > > On Thu, Aug 27, 2026 at 08:44:48PM -0700, Michael Kelley wrote: > > > Support for CPU_BIG_ENDIAN configurations on arm64 was deprecated > > > in commit 1cf89b6bf660 ("arm64: Kconfig: Make CPU_BIG_ENDIAN depend > > > on BROKEN"). The support is now in the process of being completely > > > removed. > > > > > > The Kconfig for Hyper-V guests on arm64 currently has a > > > !CPU_BIG_ENDIAN qualifier since Hyper-V only supports little > > > endian. But with Linux on arm64 restricted to little endian, > > > that qualifier is no longer necessary. Remove it. > > > > > > Signed-off-by: Michael Kelley <[email protected]> > > > --- > > > drivers/hv/Kconfig | 2 +- > > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > > > diff --git a/drivers/hv/Kconfig b/drivers/hv/Kconfig > > > index aa11bcefddf2..db8464fcd119 100644 > > > --- a/drivers/hv/Kconfig > > > +++ b/drivers/hv/Kconfig > > > @@ -5,7 +5,7 @@ menu "Microsoft Hyper-V guest support" > > > config HYPERV > > > bool "Microsoft Hyper-V core hypervisor support" > > > depends on (X86 && X86_LOCAL_APIC && HYPERVISOR_GUEST) \ > > > - || (ARM64 && !CPU_BIG_ENDIAN) > > > + || ARM64 > > > > Personally, I think we should leave it be until aarch64_be support is > > completely stripped out of the kernel. > > > > The removal is in progress -- see [1]. As noted in that overview, > some kernel areas have already removed the big-endian support, > so the kernel is already irrevocably down the path. But there's > certainly no urgency to do it here as it has no operational effect. > It's just a cleanup item I noted and if the preference is to wait on > picking it up, that's fine. > > Michael > > [1] https://lore.kernel.org/lkml/[email protected]/ >
This can be dropped as a separate patch. Will Deacon is making the change in v2 of his series to remove and cleanup arm64 big-endian support throughout the kernel [2]. He did not have the Hyper-V change in v1 of his series. Michael [2] https://lore.kernel.org/lkml/[email protected]/
