From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roger Pau =?utf-8?B?TW9ubsOp?= Subject: Re: [PATCH] x86/mm/p2m: don't needlessly limit MMIO mapping order to 4k Date: Tue, 16 Oct 2018 17:26:44 +0100 Message-ID: <20181016162644.xtfjulcvpspfkglp@mac.bytemobile.com> References: <20181016144155.24646-1-paul.durrant@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from all-amaz-eas1.inumbo.com ([34.197.232.57]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gCSBJ-0003zf-3m for xen-devel@lists.xenproject.org; Tue, 16 Oct 2018 16:26:53 +0000 Content-Disposition: inline In-Reply-To: <20181016144155.24646-1-paul.durrant@citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: Paul Durrant Cc: George Dunlap , xen-devel@lists.xenproject.org, Wei Liu , Jan Beulich , Andrew Cooper List-Id: xen-devel@lists.xenproject.org T24gVHVlLCBPY3QgMTYsIDIwMTggYXQgMDM6NDE6NTVQTSArMDEwMCwgUGF1bCBEdXJyYW50IHdy b3RlOgo+IFRoZSBQMk0gY29tbW9uIGNvZGUgY3VycmVudGx5IHJlc3RyaWN0cyB0aGUgTU1JTyBt YXBwaW5nIG9yZGVyIG9mIGFueQo+IGRvbWFpbiB3aXRoIElPTU1VIG1hcHBpbmdzLCBidXQgdGhh dCBpcyBub3QgdXNpbmcgc2hhcmVkIHRhYmxlcywgdG8gNGsuCj4gVGhpcyBoYXMgYmVlbiBzaG93 biB0byBoYXZlIGEgaHVnZSBwZXJmb3JtYW5jZSBjb3N0IHdoZW4gcGFzc2luZyB0aHJvdWdoCj4g YSBQQ0kgZGV2aWNlIHdpdGggYSB2ZXJ5IGxhcmdlIEJBUiAoZS5nLiBOVklESUEgUDQwKSwgaW5j cmVhc2luZyB0aGUgZ3Vlc3QKPiBib290IHRpbWUgZnJvbSB+MjBzIHRvIHNldmVyYWwgbWludXRl cyB3aGVuIGlvbW11PW5vLXNoYXJlcHQgaXMgc3BlY2lmaWVkCj4gb24gdGhlIFhlbiBjb21tYW5k IGxpbmUuCj4gCj4gVGhlIGxpbWl0YXRpb24gd2FzIGFkZGVkIGJ5IGNvbW1pdCBjM2M3NTZiZCAi eDg2L3AybTogdXNlIGxhcmdlIHBhZ2VzCj4gZm9yIE1NSU8gbWFwcGluZ3MiIGhvd2V2ZXIgdGhl IHVuZGVybHlpbmcgaW1wbGVtZW50YXRpb25zIG9mIHAybS0+c2V0X2VudHJ5Cj4gZm9yIEludGVs IGFuZCBBTUQgYXJlIGNvZGVkIHRvIGNvcGUgd2l0aCBtYXBwaW5nIG9yZGVycyBoaWdoZXIgdGhh biA0aywKPiBldmVuIHRob3VnaCB0aGUgSU9NTVUgbWFwcGluZyBmdW5jdGlvbiBpcyBpdHNlbGYg Y3VycmVudGx5IGxpbWl0ZWQgdG8gNGssCj4gc28gdGhlcmUgaXMgbm8gcmVhbCBuZWVkIHRvIGxp bWl0IHRoZSBvcmRlciBwYXNzZWQgaW50byB0aGUgbWV0aG9kLgo+IAo+IFdpdGggdGhpcyBwYXRj aCBhcHBsaWVkIHRoZSBWTSBib290IHRpbWUgaXMgcmVzdG9yZWQgdG8gc29tZXRoaW5nCj4gcmVh c29uYWJsZS4gTm90IGFzIGZhc3QgYXMgd2l0aG91dCBpb21tdT1uby1zaGFyZXB0LCBidXQgd2l0 aGluIGEgZmV3Cj4gc2Vjb25kcyBvZiBpdC4KCkkgZ3Vlc3MgdGhlIHdvcnJ5IHdhcyB0aGF0IHRo ZSBsb29wIGluIGZvciBleGFtcGxlIGVwdF9zZXRfZW50cnkgdG8KcGVyZm9ybSB0aGUgaW9tbXUg bWFwcGluZ3Mgd291bGQgdGFrZSB0b28gbG9uZyBhbmQgdHJpZ2dlciB0aGUKd2F0Y2hkb2cgaWYg Zm9yIGV4YW1wbGUgYSAxR0IgcGFnZSBpcyBtYXBwZWQ/CgpJbiBhbnkgY2FzZSB3ZSBhbHJlYWR5 IGFsbG93IHRvIG1hcCBoaWdoZXIgb3JkZXIgbm9uLU1NSU8gcGFnZXMsIHdoaWNoCnNob3VsZCBh bHNvIHRyaWdnZXIgc3VjaCBpc3N1ZT8KClRoYW5rcywgUm9nZXIuCgpfX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhl bi1kZXZlbEBsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRwczovL2xpc3RzLnhlbnByb2plY3Qub3Jn L21haWxtYW4vbGlzdGluZm8veGVuLWRldmVs