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d="scan'208";a="7415854" From: Andrew Cooper To: Xen-devel Date: Wed, 23 Oct 2019 14:58:08 +0100 Message-ID: <20191023135812.21348-4-andrew.cooper3@citrix.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20191023135812.21348-1-andrew.cooper3@citrix.com> References: <20191023135812.21348-1-andrew.cooper3@citrix.com> MIME-Version: 1.0 Subject: [Xen-devel] [PATCH v3 3/7] xen/nospec: Introduce CONFIG_SPECULATIVE_HARDEN_BRANCH 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: Juergen Gross , Andrew Cooper , Wei Liu , Jan Beulich , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" SnVzdCBhcyB3aXRoIENPTkZJR19TUEVDVUxBVElWRV9IQVJERU5fQVJSQVksIGJyYW5jaCBoYXJk ZW5pbmcgc2hvdWxkIGJlCmNvbmZpZ3VyYWJsZSBhdCBjb21waWxlIHRpbWUuCgpUaGUgcHJldmlv dXMgQ09ORklHX0hWTSB3YXMgYSBjb25zZXF1ZW5jZSBvZiB3aGF0IGNvdWxkIGJlIGRpc2N1c3Nl ZCBwdWJsaWNseQphdCB0aGUgdGltZSB0aGUgcGF0Y2hlcyB3ZXJlIHN1Ym1pdHRlZCwgYW5kIHdh c24ndCBhY3R1YWxseSBjb3JyZWN0LiAgTGF0ZXIKcGF0Y2hlcyB3aWxsIG1ha2UgZnVydGhlciBj b3JyZWN0aW9ucy4KClNpZ25lZC1vZmYtYnk6IEFuZHJldyBDb29wZXIgPGFuZHJldy5jb29wZXIz QGNpdHJpeC5jb20+Ci0tLQpDQzogSmFuIEJldWxpY2ggPEpCZXVsaWNoQHN1c2UuY29tPgpDQzog V2VpIExpdSA8d2xAeGVuLm9yZz4KQ0M6IFJvZ2VyIFBhdSBNb25uw6kgPHJvZ2VyLnBhdUBjaXRy aXguY29tPgpDQzogSnVlcmdlbiBHcm9zcyA8amdyb3NzQHN1c2UuY29tPgoKdjM6CiAqIFJlZHVj ZSB0byBqdXN0IHRoZSBLY29uZmlnIG9wdGlvbi4gIFNwbGl0IG90aGVyIGNoYW5nZXMgb3V0IGlu dG8gc2VwYXJhdGUKICAgcGF0Y2hlcy4KCnYyOgogKiBFeHBhbmQgdGhlIGNvbW1pdCBtZXNzYWdl IHRvIGRlc2NyaWJlIGhvdyB0aGUgZ2VuZXJhdGVkIGNvZGUgaXMgYnJva2VuLgogKiBSZW5hbWUg dG8gQ09ORklHX1NQRUNVTEFUSVZFX0hBUkRFTl9CUkFOQ0gKICogU3dpdGNoIGFsdGVybmF0aXZl KCkgdG8gYXNtKCkKICogRml4IGEgY29tbWVudCB0eXBvCi0tLQogeGVuL2NvbW1vbi9LY29uZmln ICAgICAgICAgICB8IDIzICsrKysrKysrKysrKysrKysrKysrKysrCiB4ZW4vaW5jbHVkZS9hc20t eDg2L25vc3BlYy5oIHwgIDIgKy0KIDIgZmlsZXMgY2hhbmdlZCwgMjQgaW5zZXJ0aW9ucygrKSwg MSBkZWxldGlvbigtKQoKZGlmZiAtLWdpdCBhL3hlbi9jb21tb24vS2NvbmZpZyBiL3hlbi9jb21t b24vS2NvbmZpZwppbmRleCA3YjVkZDlkNDk1Li5jOWU2NzE4NjllIDEwMDY0NAotLS0gYS94ZW4v Y29tbW9uL0tjb25maWcKKysrIGIveGVuL2NvbW1vbi9LY29uZmlnCkBAIC0xMDIsNiArMTAyLDI5 IEBAIGNvbmZpZyBTUEVDVUxBVElWRV9IQVJERU5fQVJSQVkKIAogCSAgSWYgdW5zdXJlLCBzYXkg WS4KIAorY29uZmlnIFNQRUNVTEFUSVZFX0hBUkRFTl9CUkFOQ0gKKwlib29sICJTcGVjdWxhdGl2 ZSBCcmFuY2ggSGFyZGVuaW5nIgorCWRlZmF1bHQgeQorCWRlcGVuZHMgb24gWDg2CisgICAgICAg IC0tLWhlbHAtLS0KKwkgIENvbnRlbXBvcmFyeSBwcm9jZXNzb3JzIG1heSB1c2Ugc3BlY3VsYXRp dmUgZXhlY3V0aW9uIGFzIGEKKwkgIHBlcmZvcm1hbmNlIG9wdGltaXNhdGlvbiwgYnV0IHRoaXMg Y2FuIHBvdGVudGlhbGx5IGJlIGFidXNlZCBieSBhbgorCSAgYXR0YWNrZXIgdG8gbGVhayBkYXRh IHZpYSBzcGVjdWxhdGl2ZSBzaWRlY2hhbm5lbHMuCisKKwkgIE9uZSBzb3VyY2Ugb2YgbWlzYmVo YXZpb3VyIGlzIGJ5IGV4ZWN1dGluZyB0aGUgd3JvbmcgYmFzaWMgYmxvY2sKKwkgIGZvbGxvd2lu ZyBhIGNvbmRpdGlvbmFsIGp1bXAuCisKKwkgIFdoZW4gZW5hYmxlZCwgc3BlY2lmaWMgY29uZGl0 aW9ucyB3aGljaCBoYXZlIGJlZW4gZGVlbWVkIGxpYWJsZSB0bworCSAgYmUgc3BlY3VsYXRpdmVs eSBhYnVzZWQgd2lsbCBiZSBoYXJkZW5lZCB0byBhdm9pZCBlbnRlcmluZyB0aGUgd3JvbmcKKwkg IGJhc2ljIGJsb2NrLgorCisJICBUaGlzIGlzIGEgYmVzdC1lZmZvcnQgbWl0aWdhdGlvbi4gIFRo ZXJlIGFyZSBubyBndWFyYW50ZWVzIHRoYXQgYWxsCisJICBhcmVhcyBvZiBjb2RlIG9wZW4gdG8g YWJ1c2UgaGF2ZSBiZWVuIGhhcmRlbmVkLCBub3IgdGhhdAorCSAgb3B0aW1pc2F0aW9ucyBpbiB0 aGUgY29tcGlsZXIgaGF2ZW4ndCBzdWJ2ZXJ0ZWQgdGhlIGF0dGVtcHRzIHRvCisJICBoYXJkZW4u CisKKwkgIElmIHVuc3VyZSwgc2F5IFkuCisKIGVuZG1lbnUKIAogY29uZmlnIEtFWEVDCmRpZmYg LS1naXQgYS94ZW4vaW5jbHVkZS9hc20teDg2L25vc3BlYy5oIGIveGVuL2luY2x1ZGUvYXNtLXg4 Ni9ub3NwZWMuaAppbmRleCA0MjdiNWZmOWRmLi4xNTRlOTJhZWQ4IDEwMDY0NAotLS0gYS94ZW4v aW5jbHVkZS9hc20teDg2L25vc3BlYy5oCisrKyBiL3hlbi9pbmNsdWRlL2FzbS14ODYvbm9zcGVj LmgKQEAgLTksNyArOSw3IEBACiAvKiBBbGxvdyB0byBpbnNlcnQgYSByZWFkIG1lbW9yeSBiYXJy aWVyIGludG8gY29uZGl0aW9uYWxzICovCiBzdGF0aWMgYWx3YXlzX2lubGluZSBib29sIGJhcnJp ZXJfbm9zcGVjX3RydWUodm9pZCkKIHsKLSNpZmRlZiBDT05GSUdfSFZNCisjaWZkZWYgQ09ORklH X1NQRUNVTEFUSVZFX0hBUkRFTl9CUkFOQ0gKICAgICBhbHRlcm5hdGl2ZSgiIiwgImxmZW5jZSIs IFg4Nl9GRUFUVVJFX1NDX0wxVEZfVlVMTik7CiAjZW5kaWYKICAgICByZXR1cm4gdHJ1ZTsKLS0g CjIuMTEuMAoKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f Clhlbi1kZXZlbCBtYWlsaW5nIGxpc3QKWGVuLWRldmVsQGxpc3RzLnhlbnByb2plY3Qub3JnCmh0 dHBzOi8vbGlzdHMueGVucHJvamVjdC5vcmcvbWFpbG1hbi9saXN0aW5mby94ZW4tZGV2ZWw=