From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wei Liu Subject: [PATCH RFC 06/55] x86/mm: map_pages_to_xen should have one exit path Date: Thu, 7 Feb 2019 16:44:07 +0000 Message-ID: <20190207164456.9260-7-wei.liu2@citrix.com> References: <20190207164456.9260-1-wei.liu2@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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 1grmnN-0006dI-OI for xen-devel@lists.xenproject.org; Thu, 07 Feb 2019 16:45:01 +0000 In-Reply-To: <20190207164456.9260-1-wei.liu2@citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: xen-devel@lists.xenproject.org Cc: Andrew Cooper , Wei Liu , Jan Beulich , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= List-Id: xen-devel@lists.xenproject.org V2Ugd2lsbCBzb29uIHJld3JpdGUgdGhlIGZ1bmN0aW9uIHRvIGhhbmRsZSBkeW5hbWljYWxseSBt YXBwaW5nIGFuZAp1bm1hcHBpbmcgb2YgcGFnZSB0YWJsZXMuCgpObyBmdW5jdGlvbmFsIGNoYW5n ZS4KClNpZ25lZC1vZmYtYnk6IFdlaSBMaXUgPHdlaS5saXUyQGNpdHJpeC5jb20+Ci0tLQogeGVu L2FyY2gveDg2L21tLmMgfCAzNCArKysrKysrKysrKysrKysrKysrKysrKysrKystLS0tLS0tCiAx IGZpbGUgY2hhbmdlZCwgMjcgaW5zZXJ0aW9ucygrKSwgNyBkZWxldGlvbnMoLSkKCmRpZmYgLS1n aXQgYS94ZW4vYXJjaC94ODYvbW0uYyBiL3hlbi9hcmNoL3g4Ni9tbS5jCmluZGV4IDQxNDdhNzFj NWQuLjNhYjIyMmM4ZWEgMTAwNjQ0Ci0tLSBhL3hlbi9hcmNoL3g4Ni9tbS5jCisrKyBiL3hlbi9h cmNoL3g4Ni9tbS5jCkBAIC00ODg3LDkgKzQ4ODcsMTEgQEAgaW50IG1hcF9wYWdlc190b194ZW4o CiAgICAgdW5zaWduZWQgaW50IGZsYWdzKQogewogICAgIGJvb2wgbG9ja2luZyA9IHN5c3RlbV9z dGF0ZSA+IFNZU19TVEFURV9ib290OworICAgIGwzX3BnZW50cnlfdCAqcGwzZSwgb2wzZTsKICAg ICBsMl9wZ2VudHJ5X3QgKnBsMmUsIG9sMmU7CiAgICAgbDFfcGdlbnRyeV90ICpwbDFlLCBvbDFl OwogICAgIHVuc2lnbmVkIGludCAgaTsKKyAgICBpbnQgcmMgPSAtRU5PTUVNOwogCiAjZGVmaW5l IGZsdXNoX2ZsYWdzKG9sZGYpIGRvIHsgICAgICAgICAgICAgICAgIFwKICAgICB1bnNpZ25lZCBp bnQgb18gPSAob2xkZik7ICAgICAgICAgICAgICAgICAgXApAQCAtNDkwNywxMCArNDkwOSwxMyBA QCBpbnQgbWFwX3BhZ2VzX3RvX3hlbigKIAogICAgIHdoaWxlICggbnJfbWZucyAhPSAwICkKICAg ICB7Ci0gICAgICAgIGwzX3BnZW50cnlfdCBvbDNlLCAqcGwzZSA9IHZpcnRfdG9feGVuX2wzZSh2 aXJ0KTsKKyAgICAgICAgcGwzZSA9IHZpcnRfdG9feGVuX2wzZSh2aXJ0KTsKIAogICAgICAgICBp ZiAoICFwbDNlICkKLSAgICAgICAgICAgIHJldHVybiAtRU5PTUVNOworICAgICAgICB7CisgICAg ICAgICAgICBBU1NFUlQocmMgPT0gLUVOT01FTSk7CisgICAgICAgICAgICBnb3RvIG91dDsKKyAg ICAgICAgfQogICAgICAgICBvbDNlID0gKnBsM2U7CiAKICAgICAgICAgaWYgKCBjcHVfaGFzX3Bh Z2UxZ2IgJiYKQEAgLTUwMDIsNyArNTAwNywxMCBAQCBpbnQgbWFwX3BhZ2VzX3RvX3hlbigKIAog ICAgICAgICAgICAgbDJ0ID0gYWxsb2NfeGVuX3BhZ2V0YWJsZSgpOwogICAgICAgICAgICAgaWYg KCBsMnQgPT0gTlVMTCApCi0gICAgICAgICAgICAgICAgcmV0dXJuIC1FTk9NRU07CisgICAgICAg ICAgICB7CisgICAgICAgICAgICAgICAgQVNTRVJUKHJjID09IC1FTk9NRU0pOworICAgICAgICAg ICAgICAgIGdvdG8gb3V0OworICAgICAgICAgICAgfQogCiAgICAgICAgICAgICBmb3IgKCBpID0g MDsgaSA8IEwyX1BBR0VUQUJMRV9FTlRSSUVTOyBpKysgKQogICAgICAgICAgICAgICAgIGwyZV93 cml0ZShsMnQgKyBpLApAQCAtNTAzMSw3ICs1MDM5LDEwIEBAIGludCBtYXBfcGFnZXNfdG9feGVu KAogCiAgICAgICAgIHBsMmUgPSB2aXJ0X3RvX3hlbl9sMmUodmlydCk7CiAgICAgICAgIGlmICgg IXBsMmUgKQotICAgICAgICAgICAgcmV0dXJuIC1FTk9NRU07CisgICAgICAgIHsKKyAgICAgICAg ICAgIEFTU0VSVChyYyA9PSAtRU5PTUVNKTsKKyAgICAgICAgICAgIGdvdG8gb3V0OworICAgICAg ICB9CiAKICAgICAgICAgaWYgKCAoKCgodmlydCA+PiBQQUdFX1NISUZUKSB8IG1mbl94KG1mbikp ICYKICAgICAgICAgICAgICAgICgoMXUgPDwgUEFHRVRBQkxFX09SREVSKSAtIDEpKSA9PSAwKSAm JgpAQCAtNTA3Niw3ICs1MDg3LDEwIEBAIGludCBtYXBfcGFnZXNfdG9feGVuKAogICAgICAgICAg ICAgewogICAgICAgICAgICAgICAgIHBsMWUgPSB2aXJ0X3RvX3hlbl9sMWUodmlydCk7CiAgICAg ICAgICAgICAgICAgaWYgKCBwbDFlID09IE5VTEwgKQotICAgICAgICAgICAgICAgICAgICByZXR1 cm4gLUVOT01FTTsKKyAgICAgICAgICAgICAgICB7CisgICAgICAgICAgICAgICAgICAgIEFTU0VS VChyYyA9PSAtRU5PTUVNKTsKKyAgICAgICAgICAgICAgICAgICAgZ290byBvdXQ7CisgICAgICAg ICAgICAgICAgfQogICAgICAgICAgICAgfQogICAgICAgICAgICAgZWxzZSBpZiAoIGwyZV9nZXRf ZmxhZ3MoKnBsMmUpICYgX1BBR0VfUFNFICkKICAgICAgICAgICAgIHsKQEAgLTUxMDQsNyArNTEx OCwxMCBAQCBpbnQgbWFwX3BhZ2VzX3RvX3hlbigKIAogICAgICAgICAgICAgICAgIGwxdCA9IGFs bG9jX3hlbl9wYWdldGFibGUoKTsKICAgICAgICAgICAgICAgICBpZiAoIGwxdCA9PSBOVUxMICkK LSAgICAgICAgICAgICAgICAgICAgcmV0dXJuIC1FTk9NRU07CisgICAgICAgICAgICAgICAgewor ICAgICAgICAgICAgICAgICAgICBBU1NFUlQocmMgPT0gLUVOT01FTSk7CisgICAgICAgICAgICAg ICAgICAgIGdvdG8gb3V0OworICAgICAgICAgICAgICAgIH0KIAogICAgICAgICAgICAgICAgIGZv ciAoIGkgPSAwOyBpIDwgTDFfUEFHRVRBQkxFX0VOVFJJRVM7IGkrKyApCiAgICAgICAgICAgICAg ICAgICAgIGwxZV93cml0ZSgmbDF0W2ldLApAQCAtNTI1MCw3ICs1MjY3LDEwIEBAIGludCBtYXBf cGFnZXNfdG9feGVuKAogCiAjdW5kZWYgZmx1c2hfZmxhZ3MKIAotICAgIHJldHVybiAwOworICAg IHJjID0gMDsKKworIG91dDoKKyAgICByZXR1cm4gcmM7CiB9CiAKIGludCBwb3B1bGF0ZV9wdF9y YW5nZSh1bnNpZ25lZCBsb25nIHZpcnQsIHVuc2lnbmVkIGxvbmcgbnJfbWZucykKLS0gCjIuMTEu MAoKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fClhlbi1k ZXZlbCBtYWlsaW5nIGxpc3QKWGVuLWRldmVsQGxpc3RzLnhlbnByb2plY3Qub3JnCmh0dHBzOi8v bGlzdHMueGVucHJvamVjdC5vcmcvbWFpbG1hbi9saXN0aW5mby94ZW4tZGV2ZWw=