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Tue, 17 Sep 2019 03:49:15 -0700 (PDT) To: Volodymyr Babchuk References: <20190823184826.14525-1-volodymyr_babchuk@epam.com> <20190823184826.14525-2-volodymyr_babchuk@epam.com> <45208af4-22b8-2870-f79d-a98960c4700d@arm.com> <87k1aefz3t.fsf@epam.com> <1cc4bd9c-44fc-0e6e-254c-c07f4b17ba4c@arm.com> <87h85hfgda.fsf@epam.com> <24f24620-99c9-d266-5691-4e1962d67b27@arm.com> <87d0g0feir.fsf@epam.com> From: Julien Grall Message-ID: <907b2436-6b46-59d2-e2b3-39c593e7af12@arm.com> Date: Tue, 17 Sep 2019 11:49:13 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <87d0g0feir.fsf@epam.com> Content-Language: en-US Subject: Re: [Xen-devel] [PATCH 1/5] xen/arm: optee: impose limit on shared buffer size X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: "tee-dev@lists.linaro.org" , "xen-devel@lists.xenproject.org" , Stefano Stabellini Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" SGkgVm9sb2R5bXlyLAoKT24gOS8xNi8xOSA0OjI2IFBNLCBWb2xvZHlteXIgQmFiY2h1ayB3cm90 ZToKPiAKPiBIaSBKdWxpZW4sCj4gCj4gSnVsaWVuIEdyYWxsIHdyaXRlczoKPiAKPj4gSGksCj4+ Cj4+IE9uIDkvMTIvMTkgODo0NSBQTSwgVm9sb2R5bXlyIEJhYmNodWsgd3JvdGU6Cj4+Pgo+Pj4g SGkgSnVsaWVuLAo+Pj4KPj4+IEp1bGllbiBHcmFsbCB3cml0ZXM6Cj4+Pgo+Pj4+IEhpIFZvbG9k eW15ciwKPj4+Pgo+Pj4+IE9uIDkvMTEvMTkgNzo0OCBQTSwgVm9sb2R5bXlyIEJhYmNodWsgd3Jv dGU6Cj4+Pj4+Cj4+Pj4+IEp1bGllbiBHcmFsbCB3cml0ZXM6Cj4+Pj4+Cj4+Pj4+PiBIaSBWb2xv ZHlteXIsCj4+Pj4+Pgo+Pj4+Pj4gT24gOC8yMy8xOSA3OjQ4IFBNLCBWb2xvZHlteXIgQmFiY2h1 ayB3cm90ZToKPj4+Pj4+PiBXZSB3YW50IHRvIGxpbWl0IG51bWJlciBvZiBjYWxscyB0byBsb29r dXBfYW5kX3Bpbl9ndWVzdF9yYW1fYWRkcigpCj4+Pj4+Pj4gcGVyIG9uZSByZXF1ZXN0LiBUaGVy ZSBhcmUgdHdvIHdheXMgdG8gZG8gdGhpczogZWl0aGVyIHByZWVtcHQKPj4+Pj4+PiB0cmFuc2xh dGVfbm9uY29udGlnKCkgb3IgdG8gbGltaXQgc2l6ZSBvZiBvbmUgc2hhcmVkIGJ1ZmZlciBzaXpl Lgo+Pj4+Pj4+Cj4+Pj4+Pj4gSXQgaXMgcXVpdGUgaGFyZCB0byBwcmVlbXB0IHRyYW5zbGF0ZV9u b25jb250aWcoKSwgYmVjYXVzZSBpdCBpcyBkZWVwCj4+Pj4+Pj4gbmVzdGVkLiBTbyB3ZSBjaG9z ZSBzZWNvbmQgb3B0aW9uLiBXZSB3aWxsIGFsbG93IDUxMiBwYWdlcyBwZXIgb25lCj4+Pj4+Pj4g c2hhcmVkIGJ1ZmZlci4gVGhpcyBkb2VzIG5vdCBpbnRlcmZlcmUgd2l0aCBHUCBzdGFuZGFyZCwg YXMgaXQKPj4+Pj4+PiByZXF1aXJlcyB0aGF0IHNpemUgbGltaXQgZm9yIHNoYXJlZCBidWZmZXIg c2hvdWxkIGJlIGF0IGxlc3QgNTEya0IuCj4+Pj4+Pgo+Pj4+Pj4gRG8geW91IG1lYW4gImxlYXN0 IiBpbnN0ZWFkIG9mICJsZXN0Ij8KPj4+Pj4gWWVzCj4+Pj4+Cj4+Pj4+PiBJZiBzbywgd2h5IDUx MiBwYWdlcyAoaS5lIDFNQikKPiBJIGhhdmUgbWlzc2VkIHRoYXQgZWFybGllci4gQnV0IDUxMiBw YWdlcyBpcyAyTUIsIGFjdHVhbGx5Lgo+IAo+Pj4+Pj4gaXMgcGxlbnR5IGVub3VnaCBmb3IgbW9z dCBvZiB0aGUgdXNlIGNhc2VzPyBXaGF0IGRvZXMgInh0ZXN0IiBjb25zaXN0Cj4+Pj4+PiBvbj8K Pj4+Pj4gQmlnZ2VyIGJ1ZmZlciB4dGVzdCB0cmllcyB0byBhbGxvY2F0ZSBpcyBtZXJlIDMyS0Iu IEkgYmVsaWV2ZSB0aGF0IDFNQgo+Pj4+PiBpcyBlbm91Z2ggZm9yIHRoZSBtb3N0IGNhc2VzLCBi ZWNhdXNlIE9QLVRFRSBpdHNlbGYgaGF2ZSBhIHZlcnkgbGltaXRlZAo+Pj4+PiByZXNvdXJjZXMu IEJ1dCB0aGlzIHZhbHVlIGlzIGNob3NlbiBhcmJpdHJhcnkuCj4+Pj4KPj4+PiBDb3VsZCB3ZSBw b3RlbnRpYWxseSByZWR1Y2UgdG8gbGV0IHNheSA1MTJLQiAob3IgbWF5YmUgbG93ZXIpIGlmIHh0 ZXN0Cj4+Pj4gb25seSBhbGxvY2F0ZSAzMktCPwo+Pj4gUG90ZW50aWFsbHkgLSB5ZXMuIEJ1dCBv bmx5IHRvIDUxMktCIGlmIHdlIHdhbnQgdG8gYmUgY29tcGF0aWJsZSB3aXRoCj4+PiB0aGUgR2xv YmFsIFBsYXRmb3JtIHNwZWNpZmljYXRpb24uIFdoeSBhcmUgeW91IGFza2luZywgdGhvdWdoPwo+ Pgo+PiBEb2VzIHRoZSBHbG9iYWwgUGxhdGZvcm0gc3BlY2lmaWNhdGlvbiBsaW1pdCB0byA1MTJL Qj8gT3IgaXMgaXQgYSBtaW5pbXVtPwo+IEdQIFNwZWMgc2F5cywgdGhhdCBwbGF0Zm9ybSBzaG91 bGQgYWxsb3cgKmF0IGxlc3QqIDUxMktCLiBVcHBlciBsaW1pdCBpcwo+IG5vdCBzZXQuCj4gCj4+ IEJlY2F1c2UsIHRoZSBzbWFsbGVyIHRoZSBidWZmZXIgaXMsIHRoZSBsZXNzIHRpbWUgaXQgd2ls bCB0YWtlIHRvCj4+IHByb2Nlc3MgaW4gdGhlIHdvcnN0IGNhc2UuIEFsc28sIGlmIHdlIGNhbiBo YXZlIGEgcmVhc29uIGZvciB0aGUgc2l6ZQo+PiAoeW91IHNlZW0gdG8gc3VnZ2VzdCB0aGUgc3Bl YyBkZWZpbmUgYSBzaXplLi4uKSB0aGVuIGl0IGlzIG11Y2ggYmV0dGVyCj4+IHRoYW4gYSByYW5k b20gdmFsdWUuCj4gSSBoYXZlIG5vIHN0cm9uZyBhcmd1bWVudHMgaGVyZSwgYnV0IEkgd2FudCB0 byBhbGxvdyB0aGUgYmlnZ2VzdCBzaXplCj4gcG9zc2libGUuIEl0IHNlZW1zLCB0aGF0IDUxMiBw YWdlcyBpcyB0aGUgYWNjZXB0ZWQgbGltaXQgaW4gaHlwZXJ2aXNvcgo+IGNvZGUgKGF0IGxlYXN0 LCBpbiBwMm0uYyksIHNvIEkgY2hvc2UgdGhpcyB2YWx1ZS4KCklmIEdQIHNwZWNpZmljIHJlcXVl c3QgYXQgbGVhc3QgNTEyS0IsIHRoZW4gYW55IHBvcnRhYmxlIGNvZGUgc2hvdWxkIGJlIAphYmxl IHRvIGRlYWwgd2l0aCA1MTJLQiwgcmlnaHQ/IFNvIHdoeSB3b3VsZCB5b3UgYWxsb3cgbW9yZT8g V2hhdCBhcmUgCnRoZSBjb25zL3Byb3M/CgpDaGVlcnMsCgotLSAKSnVsaWVuIEdyYWxsCgpfX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2ZWwgbWFp bGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRwczovL2xpc3RzLnhl bnByb2plY3Qub3JnL21haWxtYW4vbGlzdGluZm8veGVuLWRldmVs