From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave Martin Subject: [PATCH v3 24/28] arm64/sve: KVM: Hide SVE from CPU features exposed to guests Date: Tue, 10 Oct 2017 19:38:41 +0100 Message-ID: <1507660725-7986-25-git-send-email-Dave.Martin@arm.com> References: <1507660725-7986-1-git-send-email-Dave.Martin@arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id C040C49D44 for ; Tue, 10 Oct 2017 14:39:08 -0400 (EDT) Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 0xYOknTWq9PU for ; Tue, 10 Oct 2017 14:39:07 -0400 (EDT) Received: from foss.arm.com (foss.arm.com [217.140.101.70]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 2991549D56 for ; Tue, 10 Oct 2017 14:39:06 -0400 (EDT) In-Reply-To: <1507660725-7986-1-git-send-email-Dave.Martin@arm.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu To: linux-arm-kernel@lists.infradead.org Cc: linux-arch@vger.kernel.org, Okamoto Takayuki , libc-alpha@sourceware.org, Ard Biesheuvel , Szabolcs Nagy , Catalin Marinas , Will Deacon , Marc Zyngier , Richard Sandiford , kvmarm@lists.cs.columbia.edu List-Id: kvmarm@lists.cs.columbia.edu S1ZNIGd1ZXN0cyBjYW5ub3QgY3VycmVudGx5IHVzZSBTVkUsIGJlY2F1c2UgU1ZFIGlzIGFsd2F5 cwpjb25maWd1cmVkIHRvIHRyYXAgdG8gRUwyLgoKSG93ZXZlciwgYSBndWVzdCB0aGF0IHNlZXMg U1ZFIHJlcG9ydGVkIGFzIHByZXNlbnQgaW4KSURfQUE2NFBGUjBfRUwxIG1heSBsZWdpdGltYXRl bHkgZXhwZWN0IHRoYXQgU1ZFIHdvcmtzIGFuZCB0cnkgdG8KdXNlIGl0LiAgSW5zdGVhZCBvZiB3 b3JraW5nLCB0aGUgZ3Vlc3Qgd2lsbCByZWNlaXZlIGFuIGluamVjdGVkCnVuZGVmIGV4Y2VwdGlv biwgd2hpY2ggbWF5IGNhdXNlIHRoZSBndWVzdCB0byBvb3BzIG9yIGdvIGludG8gYQpzcGluLgoK VG8gYXZvaWQgbWlzbGVhZGluZyB0aGUgZ3Vlc3QgaW50byBiZWxpZXZpbmcgdGhhdCBTVkUgd2ls bCB3b3JrLAp0aGlzIHBhdGNoIG1hc2tzIG91dCB0aGUgU1ZFIGZpZWxkIGZyb20gSURfQUE2NFBG UjBfRUwxIHdoZW4gYQpndWVzdCBhdHRlbXB0cyB0byByZWFkIHRoaXMgcmVnaXN0ZXIuICBObyBz dXBwb3J0IGlzIGV4cGxpY2l0bHkKYWRkZWQgZm9yIElEX0FBNjRaRlIwX0VMMSBlaXRoZXIsIHNv IHRoYXQgaXMgc3RpbGwgZW11bGF0ZWQgYXMKcmVhZGluZyBhcyB6ZXJvLCB3aGljaCBpcyBjb25z aXN0ZW50IHdpdGggU1ZFIG5vdCBiZWluZwppbXBsZW1lbnRlZC4KClRoaXMgaXMgYSB0ZW1wb3Jh cnkgbWVhc3VyZSwgYW5kIHdpbGwgYmUgcmVtb3ZlZCBpbiBhIGxhdGVyIHNlcmllcwp3aGVuIGZ1 bGwgS1ZNIHN1cHBvcnQgZm9yIFNWRSBpcyBpbXBsZW1lbnRlZC4KClNpZ25lZC1vZmYtYnk6IERh dmUgTWFydGluIDxEYXZlLk1hcnRpbkBhcm0uY29tPgpSZXZpZXdlZC1ieTogQWxleCBCZW5uw6ll IDxhbGV4LmJlbm5lZUBsaW5hcm8ub3JnPgpDYzogTWFyYyBaeW5naWVyIDxtYXJjLnp5bmdpZXJA YXJtLmNvbT4KLS0tCiBhcmNoL2FybTY0L2t2bS9zeXNfcmVncy5jIHwgMTIgKysrKysrKysrKyst CiAxIGZpbGUgY2hhbmdlZCwgMTEgaW5zZXJ0aW9ucygrKSwgMSBkZWxldGlvbigtKQoKZGlmZiAt LWdpdCBhL2FyY2gvYXJtNjQva3ZtL3N5c19yZWdzLmMgYi9hcmNoL2FybTY0L2t2bS9zeXNfcmVn cy5jCmluZGV4IGIxZjc1NTIuLmEwZWU5YjAgMTAwNjQ0Ci0tLSBhL2FyY2gvYXJtNjQva3ZtL3N5 c19yZWdzLmMKKysrIGIvYXJjaC9hcm02NC9rdm0vc3lzX3JlZ3MuYwpAQCAtMjMsNiArMjMsNyBA QAogI2luY2x1ZGUgPGxpbnV4L2JzZWFyY2guaD4KICNpbmNsdWRlIDxsaW51eC9rdm1faG9zdC5o PgogI2luY2x1ZGUgPGxpbnV4L21tLmg+CisjaW5jbHVkZSA8bGludXgvcHJpbnRrLmg+CiAjaW5j bHVkZSA8bGludXgvdWFjY2Vzcy5oPgogCiAjaW5jbHVkZSA8YXNtL2NhY2hlZmx1c2guaD4KQEAg LTg5Nyw4ICs4OTgsMTcgQEAgc3RhdGljIHU2NCByZWFkX2lkX3JlZyhzdHJ1Y3Qgc3lzX3JlZ19k ZXNjIGNvbnN0ICpyLCBib29sIHJheikKIHsKIAl1MzIgaWQgPSBzeXNfcmVnKCh1MzIpci0+T3Aw LCAodTMyKXItPk9wMSwKIAkJCSAodTMyKXItPkNSbiwgKHUzMilyLT5DUm0sICh1MzIpci0+T3Ay KTsKKwl1NjQgdmFsID0gcmF6ID8gMCA6IHJlYWRfc2FuaXRpc2VkX2Z0cl9yZWcoaWQpOwogCi0J cmV0dXJuIHJheiA/IDAgOiByZWFkX3Nhbml0aXNlZF9mdHJfcmVnKGlkKTsKKwlpZiAoaWQgPT0g U1lTX0lEX0FBNjRQRlIwX0VMMSkgeworCQlpZiAodmFsICYgKDB4ZlVMIDw8IElEX0FBNjRQRlIw X1NWRV9TSElGVCkpCisJCQlwcl9lcnJfb25jZSgia3ZtIFslaV06IFNWRSB1bnN1cHBvcnRlZCBm b3IgZ3Vlc3RzLCBzdXBwcmVzc2luZ1xuIiwKKwkJCQkgICAgdGFza19waWRfbnIoY3VycmVudCkp OworCisJCXZhbCAmPSB+KDB4ZlVMIDw8IElEX0FBNjRQRlIwX1NWRV9TSElGVCk7CisJfQorCisJ cmV0dXJuIHZhbDsKIH0KIAogLyogY3B1ZmVhdHVyZSBJRCByZWdpc3RlciBhY2Nlc3MgdHJhcCBo YW5kbGVycyAqLwotLSAKMi4xLjQKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fCmt2bWFybSBtYWlsaW5nIGxpc3QKa3ZtYXJtQGxpc3RzLmNzLmNvbHVtYmlh LmVkdQpodHRwczovL2xpc3RzLmNzLmNvbHVtYmlhLmVkdS9tYWlsbWFuL2xpc3RpbmZvL2t2bWFy bQo=