linux-kernel - Re: [PATCH 08/25] KVM: TDX: Add place holder for TDX VM specific mem_enc

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Message-ID: <ZtFgDrazxvF5KQix@tlindgre-MOBL1>
Date: Fri, 30 Aug 2024 09:00:46 +0300
From: Tony Lindgren <tony.lindgren@...ux.intel.com>
To: Isaku Yamahata <isaku.yamahata@...el.com>
Cc: Rick Edgecombe <rick.p.edgecombe@...el.com>, seanjc@...gle.com,
	pbonzini@...hat.com, kvm@...r.kernel.org, kai.huang@...el.com,
	isaku.yamahata@...il.com, xiaoyao.li@...el.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 08/25] KVM: TDX: Add place holder for TDX VM specific
 mem_enc_op ioctl

On Tue, Aug 13, 2024 at 09:37:07AM -0700, Isaku Yamahata wrote:
> On Mon, Aug 12, 2024 at 03:48:03PM -0700,
> Rick Edgecombe <rick.p.edgecombe@...el.com> wrote:
> 
> > diff --git a/arch/x86/kvm/vmx/tdx.c b/arch/x86/kvm/vmx/tdx.c
> > index b1c885ce8c9c..de14e80d8f3a 100644
> > --- a/arch/x86/kvm/vmx/tdx.c
> > +++ b/arch/x86/kvm/vmx/tdx.c
> > @@ -2,6 +2,7 @@
> >  #include <linux/cpu.h>
> >  #include <asm/tdx.h>
> >  #include "capabilities.h"
> > +#include "x86_ops.h"
> >  #include "tdx.h"
> >  
> >  #undef pr_fmt
> > @@ -29,6 +30,37 @@ static void __used tdx_guest_keyid_free(int keyid)
> >  	ida_free(&tdx_guest_keyid_pool, keyid);
> >  }
> >  
> > +int tdx_vm_ioctl(struct kvm *kvm, void __user *argp)
> > +{
> > +	struct kvm_tdx_cmd tdx_cmd;
> > +	int r;
> > +
> > +	if (copy_from_user(&tdx_cmd, argp, sizeof(struct kvm_tdx_cmd)))
> > +		return -EFAULT;
> > +
> > +	/*
> > +	 * Userspace should never set @error. It is used to fill
> 
> nitpick: @hw_error

Thanks will do a patch for this.

Tony