From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julien Grall Subject: Re: [PATCH] xen/swiotlb: don't initialize swiotlb twice on arm64 Date: Thu, 23 May 2019 09:54:29 +0100 Message-ID: <43201444-9e08-4343-1824-446b8de0a2aa@arm.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1hTjUg-0004yX-17 for xen-devel@lists.xenproject.org; Thu, 23 May 2019 08:54:34 +0000 In-Reply-To: Content-Language: en-US List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: Stefano Stabellini , konrad.wilk@oracle.com, boris.ostrovsky@oracle.com, jgross@suse.com Cc: xen-devel@lists.xenproject.org List-Id: xen-devel@lists.xenproject.org SGksCgpPbiAyMy8wNS8yMDE5IDAwOjI2LCBTdGVmYW5vIFN0YWJlbGxpbmkgd3JvdGU6Cj4gRnJv bTogU3RlZmFubyBTdGFiZWxsaW5pIDxzdGVmYW5vc0B4aWxpbnguY29tPgo+IAo+IE9uIGFybTY0 IHN3aW90bGIgaXMgYWxyZWFkeSBpbml0aWFsaXplZCBieSBtZW1faW5pdC4gV2UgZG9uJ3Qgd2Fu dCB0bwoKQXJtNjQgd2lsbCBub3QgYWx3YXlzIGluaXRpYWxpemUgdGhlIHN3aW90bGIuIEl0IHdp bGwgb25seSBiZSBkb25lIGlmIHRoZSB1c2VyIApmb3JjZSBpdCBvciB0aGVyZSBhcmUgbWVtb3J5 IGFib3ZlIHRoZSBETUEgbGltaXQuCgo+IGluaXRpYWxpemUgaXQgdHdpY2UsIHRoZSBtZW1vcnkg aXMgYWxyZWFkeSBhbGxvY2F0ZWQuIERldGVjdCB0aGlzCj4gY29uZGl0aW9uIGluIHN3aW90bGIt eGVuIGFuZCBza2lwIHRoZSBzZWNvbmQgaW5pdGlhbGl6YXRpb24uCgpJIHVuZGVyc3RhbmQgdGhh dCB0aGUgbWVtb3J5IGFsbG9jYXRlZCBieSBzd2lvdGxiIHdpbGwgYmUgcmVwbGFjZWQgd2l0aCBm cmVlaW5nIAptZW1vcnkuIFNvIHlvdSBhdCBsZWFzdCBoYXZlIGEgbWVtb3J5IGxlYWsuCgpIb3dl dmVyLCB0aGUgbG9naWMgdG8gYWxsb2NhdGUgdGhlIG1lbW9yeSBpcyBxdWl0ZSBkaWZmZXJlbnQu IEZvciBpbnN0YW5jZSwgCkFGQUlDVCwgc3dpb3RsYiB3aWxsIGFsbG9jYXRlIGxvdyBwYWdlcyB3 aGlsZSB4ZW4gc3dpb3RsYiB3aWxsIGFsbG9jIGFueSBwYWdlcy4KClNvIEkgdGhpbmsgeW91ciBj b21taXQgbWVzc2FnZSBzaG91bGQgY29udGFpbiBhIGJpdCBtb3JlIGRldGFpbHMgb24gdGhlIApp bXBsaWNhdGlvbi4gSSB2YWd1ZWx5IHJlbWVtYmVyIHRoYXQgb24gWGlsaW54IG9uIG5lZWRlZCB0 byB1c2UgbG93IG1lbW9yeSBhcyAKbXVjaCBhcyBwb3NzaWJsZS4gSXMgdGhpcyBwYXRjaCBhY3R1 YWxseSB0cnlpbmcgdG8gZml4IHRoYXQ/Cgo+IAo+IFNpZ25lZC1vZmYtYnk6IFN0ZWZhbm8gU3Rh YmVsbGluaSA8c3RlZmFub3NAeGlsaW54LmNvbT4KPiAKPiAtLS0KPiAKPiBUaGVyZSBhcmUgb3Ro ZXIgaXNzdWVzIHdoaWNoIEkgZm91bmQgcmVjZW50bHkgYWZmZWN0aW5nIHRoZSBzd2lvdGxiIG9u Cj4gYXJtNjQgLS0gSSdsbCBzZW5kIHRoZSBvdGhlciBwYXRjaGVzIHNlcGFyYXRlbHkuCj4gCj4g ZGlmZiAtLWdpdCBhL2RyaXZlcnMveGVuL3N3aW90bGIteGVuLmMgYi9kcml2ZXJzL3hlbi9zd2lv dGxiLXhlbi5jCj4gaW5kZXggODc3YmFmMi4uOGZjZGEyYmY0IDEwMDY0NAo+IC0tLSBhL2RyaXZl cnMveGVuL3N3aW90bGIteGVuLmMKPiArKysgYi9kcml2ZXJzL3hlbi9zd2lvdGxiLXhlbi5jCj4g QEAgLTIwNiw2ICsyMDYsNyBAQCBpbnQgX19yZWYgeGVuX3N3aW90bGJfaW5pdChpbnQgdmVyYm9z ZSwgYm9vbCBlYXJseSkKPiAgIAlpbnQgcmMgPSAtRU5PTUVNOwo+ICAgCWVudW0geGVuX3N3aW90 bGJfZXJyIG1fcmV0ID0gWEVOX1NXSU9UTEJfVU5LTk9XTjsKPiAgIAl1bnNpZ25lZCBpbnQgcmVw ZWF0ID0gMzsKPiArCWJvb2wgcHJlX2luaXRpYWxpemVkID0gZmFsc2U7Cj4gICAKPiAgIAl4ZW5f aW9fdGxiX25zbGFicyA9IHN3aW90bGJfbnJfdGJsKCk7Cj4gICByZXRyeToKPiBAQCAtMjE0LDcg KzIxNSwxMCBAQCBpbnQgX19yZWYgeGVuX3N3aW90bGJfaW5pdChpbnQgdmVyYm9zZSwgYm9vbCBl YXJseSkKPiAgIAkvKgo+ICAgCSAqIEdldCBJTyBUTEIgbWVtb3J5IGZyb20gYW55IGxvY2F0aW9u Lgo+ICAgCSAqLwo+IC0JaWYgKGVhcmx5KSB7Cj4gKwlpZiAoaW9fdGxiX3N0YXJ0ICE9IDApIHsK ClJhdGhlciB0aGFuIGFkZGluZyBhbiBleHRyYSBpZiBpbiBhIGFscmVhZHkgZGlmZmljdWx0IGNv ZGUgdG8gcmVhZC4gQ2FuIHdlIG1vdmUgCnRoZSBhbGxvY2F0aW9uIGluIGEgc2VwYXJhdGUgZnVu Y3Rpb24gYW5kIG9ubHkgY2FsbCBpdCBpZiBuZWNlc3Nhcnk/Cgo+ICsJCXhlbl9pb190bGJfc3Rh cnQgPSBwaHlzX3RvX3ZpcnQoaW9fdGxiX3N0YXJ0KTsKPiArCQlwcmVfaW5pdGlhbGl6ZWQgPSB0 cnVlOwo+ICsJfSBlbHNlIGlmIChlYXJseSkgewo+ICAgCQl4ZW5faW9fdGxiX3N0YXJ0ID0gbWVt YmxvY2tfYWxsb2MoUEFHRV9BTElHTihieXRlcyksCj4gICAJCQkJCQkgIFBBR0VfU0laRSk7Cj4g ICAJCWlmICgheGVuX2lvX3RsYl9zdGFydCkKPiBAQCAtMjY0LDcgKzI2OCw3IEBAIGludCBfX3Jl ZiB4ZW5fc3dpb3RsYl9pbml0KGludCB2ZXJib3NlLCBib29sIGVhcmx5KQo+ICAgCQkJIHZlcmJv c2UpKQo+ICAgCQkJcGFuaWMoIkNhbm5vdCBhbGxvY2F0ZSBTV0lPVExCIGJ1ZmZlciIpOwo+ICAg CQlyYyA9IDA7Cj4gLQl9IGVsc2UKPiArCX0gZWxzZSBpZiAoIXByZV9pbml0aWFsaXplZCkKPiAg IAkJcmMgPSBzd2lvdGxiX2xhdGVfaW5pdF93aXRoX3RibCh4ZW5faW9fdGxiX3N0YXJ0LCB4ZW5f aW9fdGxiX25zbGFicyk7Cj4gICAKPiAgIAlpZiAoIXJjKQo+IAoKQ2hlZXJzLAoKLS0gCkp1bGll biBHcmFsbAoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18K WGVuLWRldmVsIG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlzdHMueGVucHJvamVjdC5vcmcKaHR0 cHM6Ly9saXN0cy54ZW5wcm9qZWN0Lm9yZy9tYWlsbWFuL2xpc3RpbmZvL3hlbi1kZXZlbA== From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 39EF4C04AAC for ; 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charset="UTF-8"; format="flowed" Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" Message-ID: <20190523085429.qaPlnGmLqzmVZuwTI9OXRH7OEzy_5qSQ9J0uwU1QJOE@z> SGksCgpPbiAyMy8wNS8yMDE5IDAwOjI2LCBTdGVmYW5vIFN0YWJlbGxpbmkgd3JvdGU6Cj4gRnJv bTogU3RlZmFubyBTdGFiZWxsaW5pIDxzdGVmYW5vc0B4aWxpbnguY29tPgo+IAo+IE9uIGFybTY0 IHN3aW90bGIgaXMgYWxyZWFkeSBpbml0aWFsaXplZCBieSBtZW1faW5pdC4gV2UgZG9uJ3Qgd2Fu dCB0bwoKQXJtNjQgd2lsbCBub3QgYWx3YXlzIGluaXRpYWxpemUgdGhlIHN3aW90bGIuIEl0IHdp bGwgb25seSBiZSBkb25lIGlmIHRoZSB1c2VyIApmb3JjZSBpdCBvciB0aGVyZSBhcmUgbWVtb3J5 IGFib3ZlIHRoZSBETUEgbGltaXQuCgo+IGluaXRpYWxpemUgaXQgdHdpY2UsIHRoZSBtZW1vcnkg aXMgYWxyZWFkeSBhbGxvY2F0ZWQuIERldGVjdCB0aGlzCj4gY29uZGl0aW9uIGluIHN3aW90bGIt eGVuIGFuZCBza2lwIHRoZSBzZWNvbmQgaW5pdGlhbGl6YXRpb24uCgpJIHVuZGVyc3RhbmQgdGhh dCB0aGUgbWVtb3J5IGFsbG9jYXRlZCBieSBzd2lvdGxiIHdpbGwgYmUgcmVwbGFjZWQgd2l0aCBm cmVlaW5nIAptZW1vcnkuIFNvIHlvdSBhdCBsZWFzdCBoYXZlIGEgbWVtb3J5IGxlYWsuCgpIb3dl dmVyLCB0aGUgbG9naWMgdG8gYWxsb2NhdGUgdGhlIG1lbW9yeSBpcyBxdWl0ZSBkaWZmZXJlbnQu IEZvciBpbnN0YW5jZSwgCkFGQUlDVCwgc3dpb3RsYiB3aWxsIGFsbG9jYXRlIGxvdyBwYWdlcyB3 aGlsZSB4ZW4gc3dpb3RsYiB3aWxsIGFsbG9jIGFueSBwYWdlcy4KClNvIEkgdGhpbmsgeW91ciBj b21taXQgbWVzc2FnZSBzaG91bGQgY29udGFpbiBhIGJpdCBtb3JlIGRldGFpbHMgb24gdGhlIApp bXBsaWNhdGlvbi4gSSB2YWd1ZWx5IHJlbWVtYmVyIHRoYXQgb24gWGlsaW54IG9uIG5lZWRlZCB0 byB1c2UgbG93IG1lbW9yeSBhcyAKbXVjaCBhcyBwb3NzaWJsZS4gSXMgdGhpcyBwYXRjaCBhY3R1 YWxseSB0cnlpbmcgdG8gZml4IHRoYXQ/Cgo+IAo+IFNpZ25lZC1vZmYtYnk6IFN0ZWZhbm8gU3Rh YmVsbGluaSA8c3RlZmFub3NAeGlsaW54LmNvbT4KPiAKPiAtLS0KPiAKPiBUaGVyZSBhcmUgb3Ro ZXIgaXNzdWVzIHdoaWNoIEkgZm91bmQgcmVjZW50bHkgYWZmZWN0aW5nIHRoZSBzd2lvdGxiIG9u Cj4gYXJtNjQgLS0gSSdsbCBzZW5kIHRoZSBvdGhlciBwYXRjaGVzIHNlcGFyYXRlbHkuCj4gCj4g ZGlmZiAtLWdpdCBhL2RyaXZlcnMveGVuL3N3aW90bGIteGVuLmMgYi9kcml2ZXJzL3hlbi9zd2lv dGxiLXhlbi5jCj4gaW5kZXggODc3YmFmMi4uOGZjZGEyYmY0IDEwMDY0NAo+IC0tLSBhL2RyaXZl cnMveGVuL3N3aW90bGIteGVuLmMKPiArKysgYi9kcml2ZXJzL3hlbi9zd2lvdGxiLXhlbi5jCj4g QEAgLTIwNiw2ICsyMDYsNyBAQCBpbnQgX19yZWYgeGVuX3N3aW90bGJfaW5pdChpbnQgdmVyYm9z ZSwgYm9vbCBlYXJseSkKPiAgIAlpbnQgcmMgPSAtRU5PTUVNOwo+ICAgCWVudW0geGVuX3N3aW90 bGJfZXJyIG1fcmV0ID0gWEVOX1NXSU9UTEJfVU5LTk9XTjsKPiAgIAl1bnNpZ25lZCBpbnQgcmVw ZWF0ID0gMzsKPiArCWJvb2wgcHJlX2luaXRpYWxpemVkID0gZmFsc2U7Cj4gICAKPiAgIAl4ZW5f aW9fdGxiX25zbGFicyA9IHN3aW90bGJfbnJfdGJsKCk7Cj4gICByZXRyeToKPiBAQCAtMjE0LDcg KzIxNSwxMCBAQCBpbnQgX19yZWYgeGVuX3N3aW90bGJfaW5pdChpbnQgdmVyYm9zZSwgYm9vbCBl YXJseSkKPiAgIAkvKgo+ICAgCSAqIEdldCBJTyBUTEIgbWVtb3J5IGZyb20gYW55IGxvY2F0aW9u Lgo+ICAgCSAqLwo+IC0JaWYgKGVhcmx5KSB7Cj4gKwlpZiAoaW9fdGxiX3N0YXJ0ICE9IDApIHsK ClJhdGhlciB0aGFuIGFkZGluZyBhbiBleHRyYSBpZiBpbiBhIGFscmVhZHkgZGlmZmljdWx0IGNv ZGUgdG8gcmVhZC4gQ2FuIHdlIG1vdmUgCnRoZSBhbGxvY2F0aW9uIGluIGEgc2VwYXJhdGUgZnVu Y3Rpb24gYW5kIG9ubHkgY2FsbCBpdCBpZiBuZWNlc3Nhcnk/Cgo+ICsJCXhlbl9pb190bGJfc3Rh cnQgPSBwaHlzX3RvX3ZpcnQoaW9fdGxiX3N0YXJ0KTsKPiArCQlwcmVfaW5pdGlhbGl6ZWQgPSB0 cnVlOwo+ICsJfSBlbHNlIGlmIChlYXJseSkgewo+ICAgCQl4ZW5faW9fdGxiX3N0YXJ0ID0gbWVt YmxvY2tfYWxsb2MoUEFHRV9BTElHTihieXRlcyksCj4gICAJCQkJCQkgIFBBR0VfU0laRSk7Cj4g ICAJCWlmICgheGVuX2lvX3RsYl9zdGFydCkKPiBAQCAtMjY0LDcgKzI2OCw3IEBAIGludCBfX3Jl ZiB4ZW5fc3dpb3RsYl9pbml0KGludCB2ZXJib3NlLCBib29sIGVhcmx5KQo+ICAgCQkJIHZlcmJv c2UpKQo+ICAgCQkJcGFuaWMoIkNhbm5vdCBhbGxvY2F0ZSBTV0lPVExCIGJ1ZmZlciIpOwo+ICAg CQlyYyA9IDA7Cj4gLQl9IGVsc2UKPiArCX0gZWxzZSBpZiAoIXByZV9pbml0aWFsaXplZCkKPiAg IAkJcmMgPSBzd2lvdGxiX2xhdGVfaW5pdF93aXRoX3RibCh4ZW5faW9fdGxiX3N0YXJ0LCB4ZW5f aW9fdGxiX25zbGFicyk7Cj4gICAKPiAgIAlpZiAoIXJjKQo+IAoKQ2hlZXJzLAoKLS0gCkp1bGll biBHcmFsbAoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18K WGVuLWRldmVsIG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlzdHMueGVucHJvamVjdC5vcmcKaHR0 cHM6Ly9saXN0cy54ZW5wcm9qZWN0Lm9yZy9tYWlsbWFuL2xpc3RpbmZvL3hlbi1kZXZlbA==