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Mon, 19 Oct 2020 15:06:13 +0000 Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 79b20b0d-5411-4c45-9d63-85c980849898; Mon, 19 Oct 2020 15:06:11 +0000 (UTC) Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id E318FAD2C; Mon, 19 Oct 2020 15:06:10 +0000 (UTC) Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kUWjl-00060X-A5 for xen-devel@lists.xenproject.org; Mon, 19 Oct 2020 15:06:13 +0000 X-Inumbo-ID: 79b20b0d-5411-4c45-9d63-85c980849898 Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 79b20b0d-5411-4c45-9d63-85c980849898; Mon, 19 Oct 2020 15:06:11 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1603119971; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=/79kF2ExC6eVhHBfS6zXHWQ6VawLjcyrM3D9bYLTy5w=; b=Hfn/wlTzOBfUhcPu6kNBhC7G8I1/eqBCJsyggUO3eBe5o1O3nXPxzlJdL9w1URdr5lovIi CcNCZDPsAvXcTjyPJzUBUUgSRvkkc0RzWZOR/1fEG04dGB2AHuGmDIsDCLmt8jCajw7bWn GFJfj2kihcpsisbd1Imf3nmhTrNMxoY= Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id E318FAD2C; Mon, 19 Oct 2020 15:06:10 +0000 (UTC) Subject: Re: [PATCH v10 03/11] xen/common/domctl: introduce XEN_DOMCTL_get/set_domain_context From: Jan Beulich To: Paul Durrant Cc: xen-devel@lists.xenproject.org, Paul Durrant , Julien Grall , Wei Liu , Daniel De Graaf , Ian Jackson , Andrew Cooper , George Dunlap , Stefano Stabellini References: <20201008185735.29875-1-paul@xen.org> <20201008185735.29875-4-paul@xen.org> <025d8753-5dd7-a114-6b27-f50ec863582c@suse.com> Message-ID: <16f30ecf-6aa5-264f-1c2c-9db573d1cbb2@suse.com> Date: Mon, 19 Oct 2020 17:06:09 +0200 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.12.1 MIME-Version: 1.0 In-Reply-To: <025d8753-5dd7-a114-6b27-f50ec863582c@suse.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit On 19.10.2020 16:30, Jan Beulich wrote: > On 08.10.2020 20:57, Paul Durrant wrote: >> +static int dry_run_end(void *priv, size_t len) >> +{ >> + struct domctl_context *c = priv; >> + >> + ASSERT(IS_ALIGNED(c->len, DOMAIN_CONTEXT_RECORD_ALIGN)); >> + >> + return 0; >> +} >> + >> +static struct domain_save_ctxt_ops dry_run_ops = { > > const? (same for save_ops and load_ops then) > >> --- a/xen/include/public/domctl.h >> +++ b/xen/include/public/domctl.h >> @@ -1132,6 +1132,41 @@ struct xen_domctl_vuart_op { >> */ >> }; >> >> +/* >> + * XEN_DOMCTL_get_domain_context >> + * ----------------------------- >> + * >> + * buffer (IN): The buffer into which the context data should be >> + * copied, or NULL to query the buffer size that should >> + * be allocated. >> + * size (IN/OUT): If 'buffer' is NULL then the value passed in must be >> + * zero, and the value passed out will be the size of the >> + * buffer to allocate. >> + * If 'buffer' is non-NULL then the value passed in must >> + * be the size of the buffer into which data may be copied. >> + * The value passed out will be the size of data written. >> + */ >> +struct xen_domctl_get_domain_context { >> + uint64_t size; > > uint64_aligned_t (also again below)? > > With these adjusted > Reviewed-by: Jan Beulich FAOD: Non-XSM hypervisor pieces only. Jan