From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received-SPF: Pass (sender SPF authorized) identity=mailfrom; client-ip=192.55.52.115; helo=mga14.intel.com; envelope-from=jian.j.wang@intel.com; receiver=edk2-devel@lists.01.org Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id 6C3FE224DD12B for ; Wed, 28 Mar 2018 22:37:41 -0700 (PDT) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga103.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 28 Mar 2018 22:44:20 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.48,375,1517904000"; d="scan'208";a="28993013" Received: from fmsmsx105.amr.corp.intel.com ([10.18.124.203]) by orsmga007.jf.intel.com with ESMTP; 28 Mar 2018 22:44:19 -0700 Received: from fmsmsx156.amr.corp.intel.com (10.18.116.74) by FMSMSX105.amr.corp.intel.com (10.18.124.203) with Microsoft SMTP Server (TLS) id 14.3.319.2; Wed, 28 Mar 2018 22:44:19 -0700 Received: from shsmsx101.ccr.corp.intel.com (10.239.4.153) by fmsmsx156.amr.corp.intel.com (10.18.116.74) with Microsoft SMTP Server (TLS) id 14.3.319.2; Wed, 28 Mar 2018 22:44:19 -0700 Received: from shsmsx103.ccr.corp.intel.com ([169.254.4.235]) by SHSMSX101.ccr.corp.intel.com ([169.254.1.166]) with mapi id 14.03.0319.002; Thu, 29 Mar 2018 13:44:17 +0800 From: "Wang, Jian J" To: Guo Heyi CC: "Zeng, Star" , "edk2-devel@lists.01.org" , Yi Li , Renhao Liang , "Dong, Eric" , "Kinney, Michael D" , "Gao, Liming" Thread-Topic: [RFC 1/1] MdeModulePkg/Gcd: Fix bug of attribute conversion Thread-Index: AQHTxwzDX6aFZbtwWUen2n2xFZTNPKPmn+XQ//+EHACAAIeUsA== Date: Thu, 29 Mar 2018 05:44:16 +0000 Message-ID: References: <1522290692-99585-1-git-send-email-heyi.guo@linaro.org> <0C09AFA07DD0434D9E2A0C6AEB0483103BA744FE@shsmsx102.ccr.corp.intel.com> <20180329050926.GC97590@SZX1000114654> In-Reply-To: <20180329050926.GC97590@SZX1000114654> Accept-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-titus-metadata-40: eyJDYXRlZ29yeUxhYmVscyI6IiIsIk1ldGFkYXRhIjp7Im5zIjoiaHR0cDpcL1wvd3d3LnRpdHVzLmNvbVwvbnNcL0ludGVsMyIsImlkIjoiZDQ2OWRhODAtOGI4ZC00NmE4LWEyMTUtMGY1MWI4OGMwYWYzIiwicHJvcHMiOlt7Im4iOiJDVFBDbGFzc2lmaWNhdGlvbiIsInZhbHMiOlt7InZhbHVlIjoiQ1RQX05UIn1dfV19LCJTdWJqZWN0TGFiZWxzIjpbXSwiVE1DVmVyc2lvbiI6IjE3LjIuNS4xOCIsIlRydXN0ZWRMYWJlbEhhc2giOiJ1cW9OeEFFK1JmSWI5R241QmhvY1wvYlBDVmlqcXFvNStrQ21FaVk0dzU5eTRCWXdFSEZhWjU2UDl0V3N4b3JYSCJ9 x-ctpclassification: CTP_NT dlp-product: dlpe-windows dlp-version: 11.0.0.116 dlp-reaction: no-action x-originating-ip: [10.239.127.40] MIME-Version: 1.0 Subject: Re: [RFC 1/1] MdeModulePkg/Gcd: Fix bug of attribute conversion X-BeenThere: edk2-devel@lists.01.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: EDK II Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 29 Mar 2018 05:37:41 -0000 Content-Language: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi Heyi, Yeah, you're probably right. Page attributes are allowed to be cleared but we have no separate parameter or interface to differentiate such situation. I think there's flaw in the interface design. But it's hard to change it no= w. Regards, Jian > -----Original Message----- > From: Guo Heyi [mailto:heyi.guo@linaro.org] > Sent: Thursday, March 29, 2018 1:09 PM > To: Wang, Jian J > Cc: Zeng, Star ; Heyi Guo ; edk= 2- > devel@lists.01.org; Yi Li ; Renhao Liang > ; Dong, Eric ; Kinney, > Michael D ; Gao, Liming > Subject: Re: [RFC 1/1] MdeModulePkg/Gcd: Fix bug of attribute conversion >=20 > Hi Jian, >=20 > I excluded CpuArchAttributes =3D=3D 0 on purpose, for I don't know the ex= pected > behaviour of gCpu->SetMemoryAttributes() if CpuArchAttributes =3D=3D 0. D= oes that > mean we need to keep the cache attribute and remove memory protection > attributes? >=20 > If so, then it seems we don't need the check at all. >=20 > Thanks, >=20 > Heyi >=20 > On Thu, Mar 29, 2018 at 04:40:33AM +0000, Wang, Jian J wrote: > > I agree. The only issue here is that case "Attributes =3D=3D 0" is also= excluded in this > patch. > > I think 0 should be CPU arch supported attributes. > > > > Regards, > > Jian > > > > > -----Original Message----- > > > From: Zeng, Star > > > Sent: Thursday, March 29, 2018 11:20 AM > > > To: Heyi Guo ; edk2-devel@lists.01.org > > > Cc: Yi Li ; Renhao Liang > > > ; Dong, Eric ; Kinney, > > > Michael D ; Gao, Liming > ; > > > Wang, Jian J ; Zeng, Star > > > Subject: RE: [RFC 1/1] MdeModulePkg/Gcd: Fix bug of attribute convers= ion > > > > > > The code before 14dde9e903bb9a719ebb8f3381da72b19509bc36 can allow > the > > > attribute to be a combination of CPU arch attribute and other attribu= tes, for > > > example, UC + RUNTIME. > > > But current code could not allow the case, that seems a regression in= the > code. > > > So, I agree the statement. > > > > > > Jian, will you please provide the special case you are awared? > > > > > > > > > Thanks, > > > Star > > > -----Original Message----- > > > From: Heyi Guo [mailto:heyi.guo@linaro.org] > > > Sent: Thursday, March 29, 2018 10:32 AM > > > To: edk2-devel@lists.01.org > > > Cc: Heyi Guo ; Yi Li ; > Renhao > > > Liang ; Zeng, Star ; Don= g, > > > Eric ; Kinney, Michael D > ; > > > Gao, Liming > > > Subject: [RFC 1/1] MdeModulePkg/Gcd: Fix bug of attribute conversion > > > > > > For gDS->SetMemorySpaceAttributes(), when user passes a combined > memory > > > attribute including CPU arch attribute and other attributes, like > > > EFI_MEMORY_RUNTIME, ConverToCpuArchAttributes() will return > > > INVALID_CPU_ARCH_ATTRIBUTES and skip setting page/cache attribute for > the > > > specified memory space. > > > > > > We don't see any reason to forbid combining CPU arch attributes and n= on- > CPU- > > > arch attributes when calling gDS->SetMemorySpaceAttributes(), so we > change > > > ConverToCpuArchAttributes() to only check if there is valid CPU arch > attributes in > > > the input "Attribute" parameter and just ignore other attributes. > > > > > > Contributed-under: TianoCore Contribution Agreement 1.1 > > > Signed-off-by: Heyi Guo > > > Signed-off-by: Yi Li > > > Signed-off-by: Renhao Liang > > > Cc: Star Zeng > > > Cc: Eric Dong > > > Cc: Michael D Kinney > > > Cc: Liming Gao > > > --- > > > MdeModulePkg/Core/Dxe/Gcd/Gcd.c | 4 ++-- > > > 1 file changed, 2 insertions(+), 2 deletions(-) > > > > > > diff --git a/MdeModulePkg/Core/Dxe/Gcd/Gcd.c > > > b/MdeModulePkg/Core/Dxe/Gcd/Gcd.c index 77f4adb4bc01..2ababdd14cc6 > > > 100644 > > > --- a/MdeModulePkg/Core/Dxe/Gcd/Gcd.c > > > +++ b/MdeModulePkg/Core/Dxe/Gcd/Gcd.c > > > @@ -673,8 +673,8 @@ ConverToCpuArchAttributes ( { > > > UINT64 CpuArchAttributes; > > > > > > - if ((Attributes & ~(EXCLUSIVE_MEMORY_ATTRIBUTES | > > > - NONEXCLUSIVE_MEMORY_ATTRIBUTES)) !=3D 0) { > > > + if ((Attributes & (EXCLUSIVE_MEMORY_ATTRIBUTES | > > > + NONEXCLUSIVE_MEMORY_ATTRIBUTES)) =3D=3D 0) { > > > return INVALID_CPU_ARCH_ATTRIBUTES; > > > } > > > > > > -- > > > 2.7.4 > >