From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Subject: [v2,07/11] x86, memory_failure: Introduce {set, clear}_mce_nospec() From: "Luck, Tony" Message-Id: <20180604180845.GA17942@agluck-desk> Date: Mon, 4 Jun 2018 11:08:45 -0700 To: Dan Williams Cc: linux-nvdimm , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Borislav Petkov , linux-edac@vger.kernel.org, X86 ML , Christoph Hellwig , Linux MM , linux-fsdevel , Jan Kara List-ID: T24gTW9uLCBKdW4gMDQsIDIwMTggYXQgMTA6Mzk6NDhBTSAtMDcwMCwgRGFuIFdpbGxpYW1zIHdy b3RlOgo+IE9uIE1vbiwgSnVuIDQsIDIwMTggYXQgMTA6MDggQU0sIEx1Y2ssIFRvbnkgPHRvbnku bHVja0BpbnRlbC5jb20+IHdyb3RlOgo+ID4gT24gU2F0LCBKdW4gMDIsIDIwMTggYXQgMTA6MjM6 MjBQTSAtMDcwMCwgRGFuIFdpbGxpYW1zIHdyb3RlOgo+ID4+ICtzdGF0aWMgaW5saW5lIGludCBz ZXRfbWNlX25vc3BlYyh1bnNpZ25lZCBsb25nIHBmbikKPiA+PiArewo+ID4+ICsgICAgIGludCBy YzsKPiA+PiArCj4gPj4gKyAgICAgcmMgPSBzZXRfbWVtb3J5X3VjKCh1bnNpZ25lZCBsb25nKSBf X3ZhKFBGTl9QSFlTKHBmbikpLCAxKTsKPiA+Cj4gPiBZb3Ugc2hvdWxkIHJlYWxseSBkbyB0aGUg ZGVjb3lfYWRkciB0aGluZyBoZXJlIHRoYXQgSSBoYWQgaW4gbWNlX3VubWFwX2twZm4oKS4KPiA+ IFB1dHRpbmcgdGhlIHZpcnR1YWwgYWRkcmVzcyBvZiB0aGUgcGFnZSB5b3UgbXVzdG4ndCBhY2Np ZGVudGFsbHkgcHJlZmV0Y2gKPiA+IGZyb20gaW50byBhIHJlZ2lzdGVyIGlzIGEgcHJldHR5IGdv b2Qgd2F5IHRvIG1ha2Ugc3VyZSB0aGF0IHRoZSBwcm9jZXNzb3IKPiA+IGRvZXMgZG8gYSBwcmVm ZXRjaC4KPiAKPiBNYXliZSBJJ20gbWlzcmVhZGluZywgYnV0IGRvZXNuJ3QgdGhhdCBtYWtlIHRo ZSBwYWdlIGNvbXBsZXRlbHkKPiBpbmFjY2Vzc2libGU/IFdlIHN0aWxsIHdhbnQgdG8gcmVhZCBw bWVtIHRocm91Z2ggdGhlIGRyaXZlciBhbmQgdGhlCj4gbGluZWFyIG1hcHBpbmcgd2l0aCBtZW1j cHlfbWNzYWZlKCkuIEFsdGVybmF0aXZlbHkgSSBjb3VsZCBqdXN0IGRyb3AKPiB0aGlzIHBhdGNo IGFuZCBzZXR1cCBhIHByaXZhdGUgLyBhbGlhcyBtYXBwaW5nIGZvciB0aGUgcG1lbSBkcml2ZXIg dG8KPiB1c2UuIEl0IHNlZW1zIGFsaWFzZWQgbWFwcGluZ3Mgd291bGQgYmUgdGhlIHNhZmVyIG9w dGlvbiwgYnV0IEkgd2FudAo+IHRvIG1ha2Ugc3VyZSBJJ3ZlIGNvbXByZWhlbmRlZCB5b3VyIHN1 Z2dlc3Rpb24gY29ycmVjdGx5PwoKSSdtIE9LIHdpdGggdGhlIGNhbGwgdG8gc2V0X21lbW9yeV91 YygpIHRvIG1ha2UgdGhpcyB1bmNhY2hlYWJsZQppbnN0ZWFkIG9mIHNldF9tZW1vcnlfbnAoKSB0 byBtYWtlIGl0IGluYWNjZXNzaWJsZS4KClRoZSBwcm9ibGVtIGlzIGhvdyB0byBhY2hpZXZlIHRo YXQuCgpUaGUgcmVzdWx0IG9mIF9fdmEoUEZOX1BIWVMocGZuKSBpcyB0aGUgdmlydHVhbCBhZGRy ZXNzIHdoZXJlIHRoZSBwb2lzb24KcGFnZSBpcyBjdXJyZW50bHkgbWFwcGVkIGludG8gdGhlIGtl cm5lbC4gVGhhdCB2YWx1ZSBnZXRzIHB1dCBpbnRvCnJlZ2lzdGVyICVyZGkgdG8gbWFrZSB0aGUg Y2FsbCB0byBzZXRfbWVtb3J5X3VjKCkgKHdoaWNoIGdvZXMgb24gdG8KY2FsbCBhIGJ1bmNoIG9m IG90aGVyIGZ1bmN0aW9ucyBwYXNzaW5nIHRoZSB2aXJ0dWFsIGFkZHJlc3MgYWxvbmcKdGhlIHdh eSkuCgpOb3cgaW1hZ2luZSBhbiBpbXBhdGllbnQgc3VwZXItc3BlY3VsYXRpdmUgcHJvY2Vzc29y IGlzIHdhaXRpbmcgZm9yCnNvbWUgcmVzdWx0IHRvIGRlY2lkZSB3aGVyZSB0byBqdW1wIG5leHQs IGFuZCBwaWNrcyBhIHBhdGggdGhhdCBpc24ndApnb2luZyB0byBiZSB0YWtlbiAuLi4gb3V0IGlu IHRoZSB3ZWVkcyBzb21ld2hlcmUgaXQgcnVucyBpbnRvOgoKCW1vdnpibAkoJXJkaSksICVlYXgK Ck9vcHMgLi4uIG5vdyB5b3UganVzdCByZWFkIGZyb20gdGhlIGFkZHJlc3MgeW91IHdlcmUgdHJ5 aW5nIHRvCmF2b2lkLiBTbyB3ZSBsb2cgYW4gZXJyb3IuIEV2ZW50dWFsbHkgdGhlIHNwZWN1bGF0 aW9uIGdldHMgc29ydGVkCm91dCBhbmQgdGhlIHByb2Nlc3NvciBrbm93cyBub3QgdG8gc2lnbmFs IGEgbWFjaGluZSBjaGVjay4gQnV0IHRoZQpsb2cgaXMgc2l0dGluZyBpbiBhIG1hY2hpbmUgY2hl Y2sgYmFuayB3YWl0aW5nIHRvIGNhdXNlIGFuIG92ZXJmbG93CmlmIHdlIHRyeSB0byBsb2cgYSBz ZWNvbmQgZXJyb3IuCgpUaGUgZGVjb3lfYWRkciB0cmljayBpbiBtY2VfdW5tYXBfa3BmbigpIHRo cm93cyBpbiB0aGUgaGlnaCBiaXQKdG8gdGhlIGFkZHJlc3MgcGFzc2VkLiAgVGhlIHNldF9tZW1v cnlfbnAoKSBjb2RlIChhbmQgSSBhc3N1bWUgdGhlCnNldF9tZW1vcnlfdWMoKSkgY29kZSBpZ25v cmVzIGl0LCBidXQgaXQgbWVhbnMgYW55IHN0cmF5IHNwZWN1bGF0aXZlCmFjY2VzcyB3b24ndCBw b2ludCBhdCB0aGUgcG9pc29uIHBhZ2UuCgotVG9ueQoKTm90ZTogdGhpcyBpcyAqbW9zdGx5KiBh IHByb2JsZW0gaWYgdGhlIHBvaXNvbiBpcyBpbiB0aGUgZmlyc3QKY2FjaGUgbGluZSBvZiB0aGUg cGFnZS4gIEJ1dCB5b3UgY291bGQgaGl0IG90aGVyIGxpbmVzIGlmIHRoZQppbnN0cnVjdGlvbiB5 b3Ugc3BlY3VsYXRpdmVseSByYW4gaW50byBoYWQgdGhlIHJpZ2h0IG9mZnNldC4gRS5nLgp0byBo aXQgdGhlIHRoaXJkIGxpbmU6CgoJbW92emJsCTEyOCglcmRpKSwgJWVheAotLS0KVG8gdW5zdWJz Y3JpYmUgZnJvbSB0aGlzIGxpc3Q6IHNlbmQgdGhlIGxpbmUgInVuc3Vic2NyaWJlIGxpbnV4LWVk YWMiIGluCnRoZSBib2R5IG9mIGEgbWVzc2FnZSB0byBtYWpvcmRvbW9Admdlci5rZXJuZWwub3Jn Ck1vcmUgbWFqb3Jkb21vIGluZm8gYXQgIGh0dHA6Ly92Z2VyLmtlcm5lbC5vcmcvbWFqb3Jkb21v LWluZm8uaHRtbAo=