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From: Oliver Upton To: Jing Zhang Cc: Marc Zyngier , Cornelia Huck , KVM , KVMARM , ARMLinux , Will Deacon , Paolo Bonzini , James Morse , Alexandru Elisei , Suzuki K Poulose , Fuad Tabba , Reiji Watanabe , Raghavendra Rao Ananta , Suraj Jitindar Singh Subject: Re: [PATCH v6 3/6] KVM: arm64: Enable writable for ID_AA64DFR0_EL1 and ID_DFR0_EL1 Message-ID: References: <20230718164522.3498236-1-jingzhangos@google.com> <20230718164522.3498236-4-jingzhangos@google.com> <87o7k77yn5.fsf@redhat.com> <87sf9h8xs0.fsf@redhat.com> <86r0p1txun.wl-maz@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-Migadu-Flow: FLOW_OUT X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230721_141020_780674_39247F63 X-CRM114-Status: GOOD ( 14.77 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org T24gRnJpLCBKdWwgMjEsIDIwMjMgYXQgMTE6MjI6MzVBTSAtMDcwMCwgSmluZyBaaGFuZyB3cm90 ZToKPiBPbiBGcmksIEp1bCAyMSwgMjAyMyBhdCAyOjMx4oCvQU0gTWFyYyBaeW5naWVyIDxtYXpA a2VybmVsLm9yZz4gd3JvdGU6Cj4gPiBNeSBwcmVmZXJlbmNlIHdvdWxkIGJlIGEgc2luZ2xlIGlv Y3RsIHRoYXQgcmV0dXJucyB0aGUgZnVsbCBsaXN0IG9mCj4gPiB3cml0ZWFibGUgbWFza3MgaW4g dGhlIElEIHJlZyByYW5nZS4gSXQgaXMgYmlnLCBidXQgbm90IGNyYXp5IGJpZwo+ID4gKDE1MzYg Ynl0ZXMsIGlmIEkgaGF2ZW4ndCBtZXNzZWQgdXApLCBhbmQgaW5jbHVkZXMgdGhlIG5vbiBJRF8q X0VMMQo+ID4gc3lzcmVnIHN1Y2ggYXMgTVBJRFJfRUwxLCBDVFJfRUwxLCBTTUlEUl9FTDEuCj4g SnVzdCB3YW50IHRvIGRvdWJsZSBjb25maXJtIHRoYXQgd291bGQgdGhlIGlvY2x0IHJldHVybiB0 aGUgbGlzdCBvZgo+IG9ubHkgd3JpdGFibGUgbWFza3MsIG5vdCB0aGUgbGlzdCBvZiB7aWRyZWdf bmFtZSwgbWFza30gcGFpcj8gU28sIHRoZQo+IFZNTSB3aWxsIG5lZWQgdG8gaW5kZXggaWRyZWcn cyB3cml0YWJsZSBtYXNrIGJ5IG9wMSwgQ1JtLCBvcDI/CgpJIGdlbmVyYWxseSBhZ3JlZSB3aXRo IHRoZSBhcHByb2FjaCBNYXJjIGlzIHByb3Bvc2luZywgYnV0IEkgd29uZGVyIGlmCml0IG1ha2Vz IHNlbnNlIHRvIGhhdmUgdXNlcnNwYWNlIGFzayB0aGUga2VybmVsIGZvciB0aGlzIGluZm9ybWF0 aW9uIG9uCmEgcGVyLXJlZ2lzdGVyIGJhc2lzLgoKV2hhdCBJIGhhZCBpbiBtaW5kIHdhcyBzb21l dGhpbmcgc2ltaWxhciB0byB0aGUgS1ZNX0dFVF9PTkVfUkVHIGlvY3RsLApidXQgaW5zdGVhZCBv ZiByZXR1cm5pbmcgdGhlIHJlZ2lzdGVyIHZhbHVlIGl0J2QgcmV0dXJuIHRoZSBtYXNrIG9mIHRo ZQpyZWdpc3Rlci4gVGhpcyB3b3VsZCBrZWVwIHRoZSBrZXJuZWwgaW1wbGVtZW50YXRpb24gZGVh ZCBzaW1wbGUgKEknbQpsYXp5KSBhbmQgbW9yZSBlYXNpbHkgYWxsb3cgZm9yIGZ1dHVyZSBleHBh bnNpb24gaW4gY2FzZSB3ZSB3YW50IHRvCnN0YXJ0IGRlc2NyaWJpbmcgbW9yZSByZWdpc3RlcnMg dGhpcyB3YXkuIFVzZXJzcGFjZSB3b3VsZCBpdGVyYXRlIHRoZSBJRApyZWdpc3RlciBzcGFjZSBh bmQgYXNrIHRoZSBrZXJuZWwgZm9yIHRoZSBtYXNrIG9mIHJlZ2lzdGVycyBpdCB3YW50cyB0bwpj aGFuZ2UuCgpUaG91Z2h0cz8KCi0tIApUaGFua3MsCk9saXZlcgoKX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGludXgtYXJtLWtlcm5lbCBtYWlsaW5nIGxp c3QKbGludXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZy YWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtYXJtLWtlcm5lbAo=