linux-kernel - Re: [PATCH 6.10] LoongArch: KVM: Remove unnecessary definition of KVM_PRIVATE_MEM

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Message-ID: <2024091628-gigantic-filth-b7b7@gregkh>
Date: Mon, 16 Sep 2024 13:38:41 +0200
From: Greg KH <gregkh@...uxfoundation.org>
To: WangYuli <wangyuli@...ontech.com>
Cc: stable@...r.kernel.org, sashal@...nel.org, maobibo@...ngson.cn,
	guanwentao@...ontech.com, chenhuacai@...ngson.cn,
	zhaotianrui@...ngson.cn, kernel@...0n.name, kvm@...r.kernel.org,
	loongarch@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 6.10] LoongArch: KVM: Remove unnecessary definition of
 KVM_PRIVATE_MEM_SLOTS

On Mon, Sep 16, 2024 at 05:20:52PM +0800, WangYuli wrote:
> From: Yuli Wang <wangyuli@...ontech.com>
> 
> [ Upstream commit 296b03ce389b4f7b3d7ea5664e53d432fb17e745 ]
> 
> 1. "KVM_PRIVATE_MEM_SLOTS" is renamed as "KVM_INTERNAL_MEM_SLOTS".
> 
> 2. "KVM_INTERNAL_MEM_SLOTS" defaults to zero, so it is not necessary to
> define it in LoongArch's asm/kvm_host.h.
> 
> Link: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=bdd1c37a315bc50ab14066c4852bc8dcf070451e
> Link: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=b075450868dbc0950f0942617f222eeb989cad10
> Reviewed-by: Bibo Mao <maobibo@...ngson.cn>
> Signed-off-by: Wentao Guan <guanwentao@...ontech.com>
> Signed-off-by: Yuli Wang <wangyuli@...ontech.com>
> Signed-off-by: Huacai Chen <chenhuacai@...ngson.cn>
> ---
>  arch/loongarch/include/asm/kvm_host.h | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/arch/loongarch/include/asm/kvm_host.h b/arch/loongarch/include/asm/kvm_host.h
> index c87b6ea0ec47..d348005d143e 100644
> --- a/arch/loongarch/include/asm/kvm_host.h
> +++ b/arch/loongarch/include/asm/kvm_host.h
> @@ -26,8 +26,6 @@
>  
>  #define KVM_MAX_VCPUS			256
>  #define KVM_MAX_CPUCFG_REGS		21
> -/* memory slots that does not exposed to userspace */
> -#define KVM_PRIVATE_MEM_SLOTS		0
>  
>  #define KVM_HALT_POLL_NS_DEFAULT	500000

Why is this needed in the stable tree?

thanks,

greg k-h