Re: [PATCH for 6.12] LoongArch: KVM: Compile switch.S directly into the kernel

[Greg Kroah-Hartman]

On Wed, May 13, 2026 at 11:12:24AM +0800, Huacai Chen wrote:
> From: Xianglai Li <lixianglai@xxxxxxxxxxx>
> 
> commit 5203012fa6045aac4b69d4e7c212e16dcf38ef10 upstream.
> 
> If we directly compile the switch.S file into the kernel, the address of
> the kvm_exc_entry function will definitely be within the DMW memory area.
> Therefore, we will no longer need to perform a copy relocation of the
> kvm_exc_entry.
> 
> So this patch compiles switch.S directly into the kernel, and then remove
> the copy relocation execution logic for the kvm_exc_entry function.
> 
> Signed-off-by: Xianglai Li <lixianglai@xxxxxxxxxxx>
> Signed-off-by: Huacai Chen <chenhuacai@xxxxxxxxxxx>
> ---
>  arch/loongarch/Kbuild                       |  2 +-
>  arch/loongarch/include/asm/asm-prototypes.h | 20 ++++++++++++
>  arch/loongarch/include/asm/kvm_host.h       |  3 --
>  arch/loongarch/kvm/Makefile                 |  3 +-
>  arch/loongarch/kvm/main.c                   | 35 ++-------------------
>  arch/loongarch/kvm/switch.S                 | 19 ++++++++---
>  6 files changed, 40 insertions(+), 42 deletions(-)

Does not apply properly to the 6.12.y tree :(