From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pierre Morel Subject: Re: [PATCH 08/10] virtio/s390: add indirection to indicators access Date: Wed, 8 May 2019 16:31:35 +0200 Message-ID: <716d47ca-016f-e8f4-6d78-7746a7d9f6ba@linux.ibm.com> References: <20190426183245.37939-1-pasic@linux.ibm.com> <20190426183245.37939-9-pasic@linux.ibm.com> Reply-To: pmorel@linux.ibm.com Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20190426183245.37939-9-pasic@linux.ibm.com> Content-Language: en-US List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: virtualization-bounces@lists.linux-foundation.org Errors-To: virtualization-bounces@lists.linux-foundation.org To: Halil Pasic , kvm@vger.kernel.org, linux-s390@vger.kernel.org, Cornelia Huck , Martin Schwidefsky , Sebastian Ott Cc: Thomas Huth , Claudio Imbrenda , Janosch Frank , Vasily Gorbik , "Michael S. Tsirkin" , Farhan Ali , Eric Farman , virtualization@lists.linux-foundation.org, Christoph Hellwig , Viktor Mihajlovski List-Id: virtualization@lists.linuxfoundation.org T24gMjYvMDQvMjAxOSAyMDozMiwgSGFsaWwgUGFzaWMgd3JvdGU6Cj4gVGhpcyB3aWxsIGNvbWUg aW4gaGFuZHkgc29vbiB3aGVuIHdlIHB1bGwgb3V0IHRoZSBpbmRpY2F0b3JzIGZyb20KPiB2aXJ0 aW9fY2N3X2RldmljZSB0byBhIG1lbW9yeSBhcmVhIHRoYXQgaXMgc2hhcmVkIHdpdGggdGhlIGh5 cGVydmlzb3IKPiAoaW4gcGFydGljdWxhciBmb3IgcHJvdGVjdGVkIHZpcnR1YWxpemF0aW9uIGd1 ZXN0cykuCj4gCj4gU2lnbmVkLW9mZi1ieTogSGFsaWwgUGFzaWMgPHBhc2ljQGxpbnV4LmlibS5j b20+Cj4gLS0tCj4gICBkcml2ZXJzL3MzOTAvdmlydGlvL3ZpcnRpb19jY3cuYyB8IDQwICsrKysr KysrKysrKysrKysrKysrKysrKystLS0tLS0tLS0tLS0tLS0KPiAgIDEgZmlsZSBjaGFuZ2VkLCAy NSBpbnNlcnRpb25zKCspLCAxNSBkZWxldGlvbnMoLSkKPiAKPiBkaWZmIC0tZ2l0IGEvZHJpdmVy cy9zMzkwL3ZpcnRpby92aXJ0aW9fY2N3LmMgYi9kcml2ZXJzL3MzOTAvdmlydGlvL3ZpcnRpb19j Y3cuYwo+IGluZGV4IGJiN2E5MjMxNmZjOC4uMWYzZTdkNTY5MjRmIDEwMDY0NAo+IC0tLSBhL2Ry aXZlcnMvczM5MC92aXJ0aW8vdmlydGlvX2Njdy5jCj4gKysrIGIvZHJpdmVycy9zMzkwL3ZpcnRp by92aXJ0aW9fY2N3LmMKPiBAQCAtNjgsNiArNjgsMTYgQEAgc3RydWN0IHZpcnRpb19jY3dfZGV2 aWNlIHsKPiAgIAl2b2lkICphaXJxX2luZm87Cj4gICB9Owo+ICAgCj4gK3N0YXRpYyBpbmxpbmUg dW5zaWduZWQgbG9uZyAqaW5kaWNhdG9ycyhzdHJ1Y3QgdmlydGlvX2Njd19kZXZpY2UgKnZjZGV2 KQo+ICt7Cj4gKwlyZXR1cm4gJnZjZGV2LT5pbmRpY2F0b3JzOwo+ICt9Cj4gKwo+ICtzdGF0aWMg aW5saW5lIHVuc2lnbmVkIGxvbmcgKmluZGljYXRvcnMyKHN0cnVjdCB2aXJ0aW9fY2N3X2Rldmlj ZSAqdmNkZXYpCj4gK3sKPiArCXJldHVybiAmdmNkZXYtPmluZGljYXRvcnMyOwo+ICt9Cj4gKwo+ ICAgc3RydWN0IHZxX2luZm9fYmxvY2tfbGVnYWN5IHsKPiAgIAlfX3U2NCBxdWV1ZTsKPiAgIAlf X3UzMiBhbGlnbjsKPiBAQCAtMzM3LDE3ICszNDcsMTcgQEAgc3RhdGljIHZvaWQgdmlydGlvX2Nj d19kcm9wX2luZGljYXRvcihzdHJ1Y3QgdmlydGlvX2Njd19kZXZpY2UgKnZjZGV2LAo+ICAgCQlj Y3ctPmNkYSA9IChfX3UzMikodW5zaWduZWQgbG9uZykgdGhpbmludF9hcmVhOwo+ICAgCX0gZWxz ZSB7Cj4gICAJCS8qIHBheWxvYWQgaXMgdGhlIGFkZHJlc3Mgb2YgdGhlIGluZGljYXRvcnMgKi8K PiAtCQlpbmRpY2F0b3JwID0ga21hbGxvYyhzaXplb2YoJnZjZGV2LT5pbmRpY2F0b3JzKSwKPiAr CQlpbmRpY2F0b3JwID0ga21hbGxvYyhzaXplb2YoaW5kaWNhdG9ycyh2Y2RldikpLAo+ICAgCQkJ CSAgICAgR0ZQX0RNQSB8IEdGUF9LRVJORUwpOwo+ICAgCQlpZiAoIWluZGljYXRvcnApCj4gICAJ CQlyZXR1cm47Cj4gICAJCSppbmRpY2F0b3JwID0gMDsKPiAgIAkJY2N3LT5jbWRfY29kZSA9IEND V19DTURfU0VUX0lORDsKPiAtCQljY3ctPmNvdW50ID0gc2l6ZW9mKCZ2Y2Rldi0+aW5kaWNhdG9y cyk7Cj4gKwkJY2N3LT5jb3VudCA9IHNpemVvZihpbmRpY2F0b3JzKHZjZGV2KSk7CgpUaGlzIGxv b2tzIHN0cmFuZ2UgdG8gbWUuIFdhcyBhbHJlYWR5IHdlaXJkIGJlZm9yZS4KTHVja3kgd2UgYXJl IGluZGljYXRvcnMgYXJlIGxvbmcuLi4KbWF5IGJlIGp1c3Qgc2l6ZW9mKGxvbmcpCgo+ICAgCQlj Y3ctPmNkYSA9IChfX3UzMikodW5zaWduZWQgbG9uZykgaW5kaWNhdG9ycDsKPiAgIAl9Cj4gICAJ LyogRGVyZWdpc3RlciBpbmRpY2F0b3JzIGZyb20gaG9zdC4gKi8KPiAtCXZjZGV2LT5pbmRpY2F0 b3JzID0gMDsKPiArCSppbmRpY2F0b3JzKHZjZGV2KSA9IDA7Cj4gICAJY2N3LT5mbGFncyA9IDA7 Cj4gICAJcmV0ID0gY2N3X2lvX2hlbHBlcih2Y2RldiwgY2N3LAo+ICAgCQkJICAgIHZjZGV2LT5p c190aGluaW50ID8KPiBAQCAtNjU2LDEwICs2NjYsMTAgQEAgc3RhdGljIGludCB2aXJ0aW9fY2N3 X2ZpbmRfdnFzKHN0cnVjdCB2aXJ0aW9fZGV2aWNlICp2ZGV2LCB1bnNpZ25lZCBudnFzLAo+ICAg CSAqIFdlIG5lZWQgYSBkYXRhIGFyZWEgdW5kZXIgMkcgdG8gY29tbXVuaWNhdGUuIE91ciBwYXls b2FkIGlzCj4gICAJICogdGhlIGFkZHJlc3Mgb2YgdGhlIGluZGljYXRvcnMuCj4gICAJKi8KPiAt CWluZGljYXRvcnAgPSBrbWFsbG9jKHNpemVvZigmdmNkZXYtPmluZGljYXRvcnMpLCBHRlBfRE1B IHwgR0ZQX0tFUk5FTCk7Cj4gKwlpbmRpY2F0b3JwID0ga21hbGxvYyhzaXplb2YoaW5kaWNhdG9y cyh2Y2RldikpLCBHRlBfRE1BIHwgR0ZQX0tFUk5FTCk7Cj4gICAJaWYgKCFpbmRpY2F0b3JwKQo+ ICAgCQlnb3RvIG91dDsKPiAtCSppbmRpY2F0b3JwID0gKHVuc2lnbmVkIGxvbmcpICZ2Y2Rldi0+ aW5kaWNhdG9yczsKPiArCSppbmRpY2F0b3JwID0gKHVuc2lnbmVkIGxvbmcpIGluZGljYXRvcnMo dmNkZXYpOwo+ICAgCWlmICh2Y2Rldi0+aXNfdGhpbmludCkgewo+ICAgCQlyZXQgPSB2aXJ0aW9f Y2N3X3JlZ2lzdGVyX2FkYXB0ZXJfaW5kKHZjZGV2LCB2cXMsIG52cXMsIGNjdyk7Cj4gICAJCWlm IChyZXQpCj4gQEAgLTY2OCwyMSArNjc4LDIxIEBAIHN0YXRpYyBpbnQgdmlydGlvX2Njd19maW5k X3ZxcyhzdHJ1Y3QgdmlydGlvX2RldmljZSAqdmRldiwgdW5zaWduZWQgbnZxcywKPiAgIAl9Cj4g ICAJaWYgKCF2Y2Rldi0+aXNfdGhpbmludCkgewo+ICAgCQkvKiBSZWdpc3RlciBxdWV1ZSBpbmRp Y2F0b3JzIHdpdGggaG9zdC4gKi8KPiAtCQl2Y2Rldi0+aW5kaWNhdG9ycyA9IDA7Cj4gKwkJKmlu ZGljYXRvcnModmNkZXYpID0gMDsKPiAgIAkJY2N3LT5jbWRfY29kZSA9IENDV19DTURfU0VUX0lO RDsKPiAgIAkJY2N3LT5mbGFncyA9IDA7Cj4gLQkJY2N3LT5jb3VudCA9IHNpemVvZigmdmNkZXYt PmluZGljYXRvcnMpOwo+ICsJCWNjdy0+Y291bnQgPSBzaXplb2YoaW5kaWNhdG9ycyh2Y2Rldikp OwoKc2FtZSBhcyBiZWZvcmUKCj4gICAJCWNjdy0+Y2RhID0gKF9fdTMyKSh1bnNpZ25lZCBsb25n KSBpbmRpY2F0b3JwOwo+ICAgCQlyZXQgPSBjY3dfaW9faGVscGVyKHZjZGV2LCBjY3csIFZJUlRJ T19DQ1dfRE9JTkdfU0VUX0lORCk7Cj4gICAJCWlmIChyZXQpCj4gICAJCQlnb3RvIG91dDsKPiAg IAl9Cj4gICAJLyogUmVnaXN0ZXIgaW5kaWNhdG9yczIgd2l0aCBob3N0IGZvciBjb25maWcgY2hh bmdlcyAqLwo+IC0JKmluZGljYXRvcnAgPSAodW5zaWduZWQgbG9uZykgJnZjZGV2LT5pbmRpY2F0 b3JzMjsKPiAtCXZjZGV2LT5pbmRpY2F0b3JzMiA9IDA7Cj4gKwkqaW5kaWNhdG9ycCA9ICh1bnNp Z25lZCBsb25nKSBpbmRpY2F0b3JzMih2Y2Rldik7Cj4gKwkqaW5kaWNhdG9yczIodmNkZXYpID0g MDsKPiAgIAljY3ctPmNtZF9jb2RlID0gQ0NXX0NNRF9TRVRfQ09ORl9JTkQ7Cj4gICAJY2N3LT5m bGFncyA9IDA7Cj4gLQljY3ctPmNvdW50ID0gc2l6ZW9mKCZ2Y2Rldi0+aW5kaWNhdG9yczIpOwo+ ICsJY2N3LT5jb3VudCA9IHNpemVvZihpbmRpY2F0b3JzMih2Y2RldikpOwoKaGVyZSB0b28KCj4g ICAJY2N3LT5jZGEgPSAoX191MzIpKHVuc2lnbmVkIGxvbmcpIGluZGljYXRvcnA7Cj4gICAJcmV0 ID0gY2N3X2lvX2hlbHBlcih2Y2RldiwgY2N3LCBWSVJUSU9fQ0NXX0RPSU5HX1NFVF9DT05GX0lO RCk7Cj4gICAJaWYgKHJldCkKPiBAQCAtMTA5MiwxNyArMTEwMiwxNyBAQCBzdGF0aWMgdm9pZCB2 aXJ0aW9fY2N3X2ludF9oYW5kbGVyKHN0cnVjdCBjY3dfZGV2aWNlICpjZGV2LAo+ICAgCQkJdmNk ZXYtPmVyciA9IC1FSU87Cj4gICAJfQo+ICAgCXZpcnRpb19jY3dfY2hlY2tfYWN0aXZpdHkodmNk ZXYsIGFjdGl2aXR5KTsKPiAtCWZvcl9lYWNoX3NldF9iaXQoaSwgJnZjZGV2LT5pbmRpY2F0b3Jz LAo+IC0JCQkgc2l6ZW9mKHZjZGV2LT5pbmRpY2F0b3JzKSAqIEJJVFNfUEVSX0JZVEUpIHsKPiAr CWZvcl9lYWNoX3NldF9iaXQoaSwgaW5kaWNhdG9ycyh2Y2RldiksCj4gKwkJCSBzaXplb2YoKmlu ZGljYXRvcnModmNkZXYpKSAqIEJJVFNfUEVSX0JZVEUpIHsKPiAgIAkJLyogVGhlIGJpdCBjbGVh ciBtdXN0IGhhcHBlbiBiZWZvcmUgdGhlIHZyaW5nIGtpY2suICovCj4gLQkJY2xlYXJfYml0KGks ICZ2Y2Rldi0+aW5kaWNhdG9ycyk7Cj4gKwkJY2xlYXJfYml0KGksIGluZGljYXRvcnModmNkZXYp KTsKPiAgIAkJYmFycmllcigpOwo+ICAgCQl2cSA9IHZpcnRpb19jY3dfdnFfYnlfaW5kKHZjZGV2 LCBpKTsKPiAgIAkJdnJpbmdfaW50ZXJydXB0KDAsIHZxKTsKPiAgIAl9Cj4gLQlpZiAodGVzdF9i aXQoMCwgJnZjZGV2LT5pbmRpY2F0b3JzMikpIHsKPiArCWlmICh0ZXN0X2JpdCgwLCBpbmRpY2F0 b3JzMih2Y2RldikpKSB7Cj4gICAJCXZpcnRpb19jb25maWdfY2hhbmdlZCgmdmNkZXYtPnZkZXYp Owo+IC0JCWNsZWFyX2JpdCgwLCAmdmNkZXYtPmluZGljYXRvcnMyKTsKPiArCQljbGVhcl9iaXQo MCwgaW5kaWNhdG9yczIodmNkZXYpKTsKPiAgIAl9Cj4gICB9Cj4gICAKPiAKCkhlcmUgYWdhaW4g anVzdCBhIGZhc3QgY2hlY2suCkkgd2lsbCBnbyBpbiB0aGUgZnVuY3Rpb25hbCBsYXRlci4KClJl Z2FyZHMsClBpZXJyZQoKCi0tIApQaWVycmUgTW9yZWwKTGludXgvS1ZNL1FFTVUgaW4gQsO2Ymxp bmdlbiAtIEdlcm1hbnkKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fClZpcnR1YWxpemF0aW9uIG1haWxpbmcgbGlzdApWaXJ0dWFsaXphdGlvbkBsaXN0cy5s aW51eC1mb3VuZGF0aW9uLm9yZwpodHRwczovL2xpc3RzLmxpbnV4Zm91bmRhdGlvbi5vcmcvbWFp bG1hbi9saXN0aW5mby92aXJ0dWFsaXphdGlvbg==