linux-kernel - Re: [PATCH v10 2/2] x86/tdx: Support vmalloc() for tdx_enc_status

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Date:   Thu, 7 Sep 2023 14:14:13 -0700
From:   Dave Hansen <dave.hansen@...el.com>
To:     Dexuan Cui <decui@...rosoft.com>, x86@...nel.org,
        ak@...ux.intel.com, arnd@...db.de, bp@...en8.de,
        brijesh.singh@....com, dan.j.williams@...el.com,
        dave.hansen@...ux.intel.com, haiyangz@...rosoft.com, hpa@...or.com,
        jane.chu@...cle.com, kirill.shutemov@...ux.intel.com,
        kys@...rosoft.com, luto@...nel.org, mingo@...hat.com,
        peterz@...radead.org, rostedt@...dmis.org,
        sathyanarayanan.kuppuswamy@...ux.intel.com, seanjc@...gle.com,
        tglx@...utronix.de, tony.luck@...el.com, wei.liu@...nel.org,
        Jason@...c4.com, nik.borisov@...e.com, mikelley@...rosoft.com
Cc:     linux-hyperv@...r.kernel.org, linux-kernel@...r.kernel.org,
        Tianyu.Lan@...rosoft.com, rick.p.edgecombe@...el.com,
        andavis@...hat.com, mheslin@...hat.com, vkuznets@...hat.com,
        xiaoyao.li@...el.com
Subject: Re: [PATCH v10 2/2] x86/tdx: Support vmalloc() for
 tdx_enc_status_changed()

On 8/11/23 14:48, Dexuan Cui wrote:
> When a TDX guest runs on Hyper-V, the hv_netvsc driver's netvsc_init_buf()
> allocates buffers using vzalloc(), and needs to share the buffers with the
> host OS by calling set_memory_decrypted(), which is not working for
> vmalloc() yet. Add the support by handling the pages one by one.
> 
> Co-developed-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
> Reviewed-by: Michael Kelley <mikelley@...rosoft.com>
> Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>
> Signed-off-by: Dexuan Cui <decui@...rosoft.com>

Reviewed-by: Dave Hansen <dave.hansen@...ux.intel.com>