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=-14.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 D16AAC56202 for ; Mon, 23 Nov 2020 09:19:57 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 591A72078E for ; Mon, 23 Nov 2020 09:19:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="1wvw8OLq"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="zL0RtJ76" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 591A72078E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Type: Content-Transfer-Encoding:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:Message-ID:References:In-Reply-To:Subject:To:From: Date:MIME-Version:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=+sOWCiF5HEvLzGVqEFTgylsApHuS9vhfaVVifXGmtgo=; b=1wvw8OLqFSttAiKscgGYoDsFy kMe6zs5i4jZFEit/A4u8IVgivQFIdl9mvJKNevOaFMJPqEAg6TJyPBezCpxIHMlIcY0bJ2wYFSK7t fWCugsdSND00DWa1shNEpVmU8CAH7r5+LFr3zz/IlgEAgBPp0DwTyFdYcAK8MlJ+PkRTLIfBOY/4D QI/a/E9tafboe4bMygSbPqNOQPBVvLP9TC3YfVHS0XtQDkfA00iRhGPjVYua6Kziwm3+DUf7PAOyI pLQ4VrRQfFVXOJTnK0CiRhn5Jd287tZKIQ22iDJwg0/vmvUKwH7d9F1ZetP3EmtXwcAzYnPusX8+f vFbi1qqUA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kh7zY-0003uQ-8j; Mon, 23 Nov 2020 09:18:36 +0000 Received: from mail.kernel.org ([198.145.29.99]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kh7zV-0003u5-JI for linux-arm-kernel@lists.infradead.org; Mon, 23 Nov 2020 09:18:34 +0000 Received: from disco-boy.misterjones.org (disco-boy.misterjones.org [51.254.78.96]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 1F88B20756; Mon, 23 Nov 2020 09:18:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1606123112; bh=C/lxpp7FZiY5qUG7l0C+bvs6KtaP5gm2+UNhTyakw90=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=zL0RtJ76w/RcGBo6LYyu2dL+g9/Myj0NLlpLkQxp9QHkYvyucxrn9RRexgpzCHSBb 4rbJtKhuSJz62Viua0gYXO/TeIMCOJkvYvvo2RCMsiNeSFDe9+NL7OtSye3tFFgCnw BhNc8j5c/xQcFOi2JX+9+lELUJviA+g+R6EtT6TU= Received: from disco-boy.misterjones.org ([51.254.78.96] helo=www.loen.fr) by disco-boy.misterjones.org with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.94) (envelope-from ) id 1kh7zR-00Cro8-Th; Mon, 23 Nov 2020 09:18:30 +0000 MIME-Version: 1.0 Date: Mon, 23 Nov 2020 09:18:29 +0000 From: Marc Zyngier To: Shenming Lu Subject: Re: [RFC PATCH v1 2/4] KVM: arm64: GICv4.1: Try to save hw pending state in save_pending_tables In-Reply-To: <20201123065410.1915-3-lushenming@huawei.com> References: <20201123065410.1915-1-lushenming@huawei.com> <20201123065410.1915-3-lushenming@huawei.com> User-Agent: Roundcube Webmail/1.4.9 Message-ID: X-Sender: maz@kernel.org X-SA-Exim-Connect-IP: 51.254.78.96 X-SA-Exim-Rcpt-To: lushenming@huawei.com, james.morse@arm.com, julien.thierry.kdev@gmail.com, suzuki.poulose@arm.com, eric.auger@redhat.com, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, christoffer.dall@arm.com, alex.williamson@redhat.com, kwankhede@nvidia.com, cohuck@redhat.com, cjia@nvidia.com, wanghaibin.wang@huawei.com, yuzenghui@huawei.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201123_041833_814048_FE0D961F X-CRM114-Status: GOOD ( 26.33 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Neo Jia , kvm@vger.kernel.org, Suzuki K Poulose , Cornelia Huck , linux-kernel@vger.kernel.org, Kirti Wankhede , Christoffer Dall , Eric Auger , Alex Williamson , James Morse , Julien Thierry , yuzenghui@huawei.com, wanghaibin.wang@huawei.com, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org T24gMjAyMC0xMS0yMyAwNjo1NCwgU2hlbm1pbmcgTHUgd3JvdGU6Cj4gQWZ0ZXIgcGF1c2luZyBh bGwgdkNQVXMgYW5kIGRldmljZXMgY2FwYWJsZSBvZiBpbnRlcnJ1cHRpbmcsIGluIG9yZGVyCiAg ICAgICAgIF5eXl5eXl5eXl5eXl5eXl5eClNlZSBteSBjb21tZW50IGJlbG93IGFib3V0IHRoaXMu Cgo+IHRvIHNhdmUgdGhlIGluZm9ybWF0aW9uIG9mIGFsbCBpbnRlcnJ1cHRzLCBiZXNpZGVzIGZs dXNoaW5nIHRoZSBwZW5kaW5nCj4gc3RhdGVzIGluIGt2beKAmXMgdmdpYywgd2UgYWxzbyB0cnkg dG8gZmx1c2ggdGhlIHN0YXRlcyBvZiBWTFBJcyBpbiB0aGUKPiB2aXJ0dWFsIHBlbmRpbmcgdGFi bGVzIGludG8gZ3Vlc3QgUkFNLCBidXQgd2UgbmVlZCB0byBoYXZlIEdJQ3Y0LjEgYW5kCj4gc2Fm ZWx5IHVubWFwIHRoZSB2UEVzIGZpcnN0Lgo+IAo+IFNpZ25lZC1vZmYtYnk6IFNoZW5taW5nIEx1 IDxsdXNoZW5taW5nQGh1YXdlaS5jb20+Cj4gLS0tCj4gIGFyY2gvYXJtNjQva3ZtL3ZnaWMvdmdp Yy12My5jIHwgNjIgKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKy0tLS0KPiAgMSBmaWxl IGNoYW5nZWQsIDU2IGluc2VydGlvbnMoKyksIDYgZGVsZXRpb25zKC0pCj4gCj4gZGlmZiAtLWdp dCBhL2FyY2gvYXJtNjQva3ZtL3ZnaWMvdmdpYy12My5jIAo+IGIvYXJjaC9hcm02NC9rdm0vdmdp Yy92Z2ljLXYzLmMKPiBpbmRleCA5Y2RmMzlhOTRhNjMuLmUxYjNhYTRiMmIxMiAxMDA2NDQKPiAt LS0gYS9hcmNoL2FybTY0L2t2bS92Z2ljL3ZnaWMtdjMuYwo+ICsrKyBiL2FyY2gvYXJtNjQva3Zt L3ZnaWMvdmdpYy12My5jCj4gQEAgLTEsNiArMSw4IEBACj4gIC8vIFNQRFgtTGljZW5zZS1JZGVu dGlmaWVyOiBHUEwtMi4wLW9ubHkKPiAKPiAgI2luY2x1ZGUgPGxpbnV4L2lycWNoaXAvYXJtLWdp Yy12My5oPgo+ICsjaW5jbHVkZSA8bGludXgvaXJxLmg+Cj4gKyNpbmNsdWRlIDxsaW51eC9pcnFk b21haW4uaD4KPiAgI2luY2x1ZGUgPGxpbnV4L2t2bS5oPgo+ICAjaW5jbHVkZSA8bGludXgva3Zt X2hvc3QuaD4KPiAgI2luY2x1ZGUgPGt2bS9hcm1fdmdpYy5oPgo+IEBAIC0zNTYsNiArMzU4LDM5 IEBAIGludCB2Z2ljX3YzX2xwaV9zeW5jX3BlbmRpbmdfc3RhdHVzKHN0cnVjdCBrdm0KPiAqa3Zt LCBzdHJ1Y3QgdmdpY19pcnEgKmlycSkKPiAgCXJldHVybiAwOwo+ICB9Cj4gCj4gKy8qCj4gKyAq IFdpdGggR0lDdjQuMSwgd2UgY2FuIGdldCB0aGUgVkxQSSdzIHBlbmRpbmcgc3RhdGUgYWZ0ZXIg dW5tYXBwaW5nCj4gKyAqIHRoZSB2UEUuIFRoZSBkZWFjdGl2YXRpb24gb2YgdGhlIGRvb3JiZWxs IGludGVycnVwdCB3aWxsIHRyaWdnZXIKPiArICogdGhlIHVubWFwcGluZyBvZiB0aGUgYXNzb2Np YXRlZCB2UEUuCj4gKyAqLwo+ICtzdGF0aWMgdm9pZCBnZXRfdmxwaV9zdGF0ZV9wcmUoc3RydWN0 IHZnaWNfZGlzdCAqZGlzdCkKPiArewo+ICsJc3RydWN0IGlycV9kZXNjICpkZXNjOwo+ICsJaW50 IGk7Cj4gKwo+ICsJaWYgKCFrdm1fdmdpY19nbG9iYWxfc3RhdGUuaGFzX2dpY3Y0XzEpCj4gKwkJ cmV0dXJuOwo+ICsKPiArCWZvciAoaSA9IDA7IGkgPCBkaXN0LT5pdHNfdm0ubnJfdnBlczsgaSsr KSB7Cj4gKwkJZGVzYyA9IGlycV90b19kZXNjKGRpc3QtPml0c192bS52cGVzW2ldLT5pcnEpOwo+ ICsJCWlycV9kb21haW5fZGVhY3RpdmF0ZV9pcnEoaXJxX2Rlc2NfZ2V0X2lycV9kYXRhKGRlc2Mp KTsKPiArCX0KPiArfQo+ICsKPiArc3RhdGljIHZvaWQgZ2V0X3ZscGlfc3RhdGVfcG9zdChzdHJ1 Y3QgdmdpY19kaXN0ICpkaXN0KQoKbml0OiB0aGUgbmFtaW5nIGZlZWxzIGEgYml0Li4uIG9kZC4g UHJlL3Bvc3Qgd2hhdD8KCj4gK3sKPiArCXN0cnVjdCBpcnFfZGVzYyAqZGVzYzsKPiArCWludCBp Owo+ICsKPiArCWlmICgha3ZtX3ZnaWNfZ2xvYmFsX3N0YXRlLmhhc19naWN2NF8xKQo+ICsJCXJl dHVybjsKPiArCj4gKwlmb3IgKGkgPSAwOyBpIDwgZGlzdC0+aXRzX3ZtLm5yX3ZwZXM7IGkrKykg ewo+ICsJCWRlc2MgPSBpcnFfdG9fZGVzYyhkaXN0LT5pdHNfdm0udnBlc1tpXS0+aXJxKTsKPiAr CQlpcnFfZG9tYWluX2FjdGl2YXRlX2lycShpcnFfZGVzY19nZXRfaXJxX2RhdGEoZGVzYyksIGZh bHNlKTsKPiArCX0KPiArfQo+ICsKPiAgLyoqCj4gICAqIHZnaWNfdjNfc2F2ZV9wZW5kaW5nX3Rh YmxlcyAtIFNhdmUgdGhlIHBlbmRpbmcgdGFibGVzIGludG8gZ3Vlc3QgCj4gUkFNCj4gICAqIGt2 bSBsb2NrIGFuZCBhbGwgdmNwdSBsb2NrIG11c3QgYmUgaGVsZAo+IEBAIC0zNjUsMTQgKzQwMCwx NyBAQCBpbnQgdmdpY192M19zYXZlX3BlbmRpbmdfdGFibGVzKHN0cnVjdCBrdm0gKmt2bSkKPiAg CXN0cnVjdCB2Z2ljX2Rpc3QgKmRpc3QgPSAma3ZtLT5hcmNoLnZnaWM7Cj4gIAlzdHJ1Y3Qgdmdp Y19pcnEgKmlycTsKPiAgCWdwYV90IGxhc3RfcHRyID0gfihncGFfdCkwOwo+IC0JaW50IHJldDsK PiArCWludCByZXQgPSAwOwo+ICAJdTggdmFsOwo+IAo+ICsJZ2V0X3ZscGlfc3RhdGVfcHJlKGRp c3QpOwo+ICsKPiAgCWxpc3RfZm9yX2VhY2hfZW50cnkoaXJxLCAmZGlzdC0+bHBpX2xpc3RfaGVh ZCwgbHBpX2xpc3QpIHsKPiAgCQlpbnQgYnl0ZV9vZmZzZXQsIGJpdF9ucjsKPiAgCQlzdHJ1Y3Qg a3ZtX3ZjcHUgKnZjcHU7Cj4gIAkJZ3BhX3QgcGVuZGJhc2UsIHB0cjsKPiAgCQlib29sIHN0b3Jl ZDsKPiArCQlib29sIGlzX3BlbmRpbmcgPSBpcnEtPnBlbmRpbmdfbGF0Y2g7Cj4gCj4gIAkJdmNw dSA9IGlycS0+dGFyZ2V0X3ZjcHU7Cj4gIAkJaWYgKCF2Y3B1KQo+IEBAIC0zODcsMjQgKzQyNSwz NiBAQCBpbnQgdmdpY192M19zYXZlX3BlbmRpbmdfdGFibGVzKHN0cnVjdCBrdm0gKmt2bSkKPiAg CQlpZiAocHRyICE9IGxhc3RfcHRyKSB7Cj4gIAkJCXJldCA9IGt2bV9yZWFkX2d1ZXN0X2xvY2so a3ZtLCBwdHIsICZ2YWwsIDEpOwo+ICAJCQlpZiAocmV0KQo+IC0JCQkJcmV0dXJuIHJldDsKPiAr CQkJCWdvdG8gb3V0Owo+ICAJCQlsYXN0X3B0ciA9IHB0cjsKPiAgCQl9Cj4gCj4gIAkJc3RvcmVk ID0gdmFsICYgKDFVIDw8IGJpdF9ucik7Cj4gLQkJaWYgKHN0b3JlZCA9PSBpcnEtPnBlbmRpbmdf bGF0Y2gpCj4gKwo+ICsJCS8qIGFsc28gZmx1c2ggaHcgcGVuZGluZyBzdGF0ZSAqLwoKVGhpcyBj b21tZW50IGxvb2tzIG91dCBvZiBwbGFjZSwgYXMgd2UgYXJlbid0IGZsdXNoaW5nIGFueXRoaW5n LgoKPiArCQlpZiAoaXJxLT5odykgewo+ICsJCQlXQVJOX1JBVEVMSU1JVChpcnFfZ2V0X2lycWNo aXBfc3RhdGUoaXJxLT5ob3N0X2lycSwKPiArCQkJCQkJSVJRQ0hJUF9TVEFURV9QRU5ESU5HLCAm aXNfcGVuZGluZyksCj4gKwkJCQkgICAgICAgIklSUSAlZCIsIGlycS0+aG9zdF9pcnEpOwoKSXNu J3QgdGhpcyBnb2luZyB0byB3YXJuIGxpa2UgbWFkIG9uIGEgR0lDdjQuMCBzeXN0ZW0gd2hlcmUg dGhpcywgYnkgCmRlZmluaXRpb24sCndpbGwgZ2VuZXJhdGUgYW4gZXJyb3I/Cgo+ICsJCX0KPiAr Cj4gKwkJaWYgKHN0b3JlZCA9PSBpc19wZW5kaW5nKQo+ICAJCQljb250aW51ZTsKPiAKPiAtCQlp ZiAoaXJxLT5wZW5kaW5nX2xhdGNoKQo+ICsJCWlmIChpc19wZW5kaW5nKQo+ICAJCQl2YWwgfD0g MSA8PCBiaXRfbnI7Cj4gIAkJZWxzZQo+ICAJCQl2YWwgJj0gfigxIDw8IGJpdF9ucik7Cj4gCj4g IAkJcmV0ID0ga3ZtX3dyaXRlX2d1ZXN0X2xvY2soa3ZtLCBwdHIsICZ2YWwsIDEpOwo+ICAJCWlm IChyZXQpCj4gLQkJCXJldHVybiByZXQ7Cj4gKwkJCWdvdG8gb3V0Owo+ICAJfQo+IC0JcmV0dXJu IDA7Cj4gKwo+ICtvdXQ6Cj4gKwlnZXRfdmxwaV9zdGF0ZV9wb3N0KGRpc3QpOwoKVGhpcyBiaXQg d29ycmllcyBtZTogeW91IGhhdmUgdW5tYXBwZWQgdGhlIFZQRXMsIHNvIGFueSBpbnRlcnJ1cHQg dGhhdCAKaGFzIGJlZW4KZ2VuZXJhdGVkIGR1cmluZyB0aGF0IHBoYXNlIGlzIG5vdyBmb3JldmVy IGxvc3QgKHRoZSBHSUMgZG9lc24ndCBoYXZlIApvd25lcnNoaXAKb2YgdGhlIHBlbmRpbmcgdGFi bGVzKS4KCkRvIHlvdSByZWFsbHkgZXhwZWN0IHRoZSBWTSB0byBiZSByZXN0YXJ0YWJsZSBmcm9t IHRoYXQgcG9pbnQ/IEkgZG9uJ3QgCnNlZSBob3cKdGhpcyBpcyBwb3NzaWJsZS4KCj4gKwo+ICsJ cmV0dXJuIHJldDsKPiAgfQo+IAo+ICAvKioKClRoYW5rcywKCiAgICAgICAgIE0uCi0tIApKYXp6 IGlzIG5vdCBkZWFkLiBJdCBqdXN0IHNtZWxscyBmdW5ueS4uLgoKX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGludXgtYXJtLWtlcm5lbCBtYWlsaW5nIGxp c3QKbGludXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZy YWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtYXJtLWtlcm5lbAo=