From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vitaly Kuznetsov Subject: [PATCH RFC] x86/smpboot: Set safer __max_logical_packages limit Date: Thu, 20 Apr 2017 15:24:53 +0200 Message-ID: <20170420132453.19652-1-vkuznets__2002.11990527368$1492694755$gmane$org@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail6.bemta6.messagelabs.com ([193.109.254.103]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1d1C4x-0005Xb-II for xen-devel@lists.xenproject.org; Thu, 20 Apr 2017 13:24:59 +0000 List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: x86@kernel.org Cc: Prarit Bhargava , linux-kernel@vger.kernel.org, Ingo Molnar , "H. Peter Anvin" , xen-devel@lists.xenproject.org, Thomas Gleixner , Borislav Petkov List-Id: xen-devel@lists.xenproject.org UmVjZW50IGNoYW5nZXMgaW4gbG9naWNhbCBwYWNrYWdlIG1hbmFnZW1lbnQgKENvbW1pdCA5ZDg1 ZWI5MTE5ZjQKKCJ4ODYvc21wYm9vdDogTWFrZSBsb2dpY2FsIHBhY2thZ2UgbWFuYWdlbWVudCBt b3JlIHJvYnVzdCIpIGFuZCBpdHMKcHJlZGVjZXNzb3IpIGNhdXNlZCBib290IGZhaWx1cmVzIGZv ciBzb21lIFhlbiBndWVzdHMuIEUuZy4gSSdtIHRyeWluZyB0bwpib290IDEwIENQVSBndWVzdCBv biBBTUQgT3B0ZXJvbiA0Mjg0IHN5c3RlbSBhbmQgSSBzZWUgdGhlIGZvbGxvd2luZyBjcmFzaDoK ClsgICAgMC4xMTYxMDRdIHNtcGJvb3Q6IE1heCBsb2dpY2FsIHBhY2thZ2VzOiAxCi4uLgpbICAg IDAuNTkwMDY4XSAgICM4ClsgICAgMC4wMDEwMDBdIHNtcGJvb3Q6IFBhY2thZ2UgMSBvZiBDUFUg OCBleGNlZWRzIEJJT1MgcGFja2FnZSBkYXRhIDEuClsgICAgMC4wMDEwMDBdIC0tLS0tLS0tLS0t LVsgY3V0IGhlcmUgXS0tLS0tLS0tLS0tLQpbICAgIDAuMDAxMDAwXSBrZXJuZWwgQlVHIGF0IGFy Y2gveDg2L2tlcm5lbC9jcHUvY29tbW9uLmM6MTAyMCEKClRoaXMgaXMgaGFwcGVuaW5nIGJlY2F1 c2UgdG90YWxfY3B1cyBpcyAxMCBhbmQgeDg2X21heF9jb3JlcyBpcyAxNighKS4KVHVybnMgb3V0 LCB0aGUgbnVtYmVyIG9mIENQVXMgKHZDUFVzIGluIG91ciBjYXNlKSBpbiBlYWNoIGxvZ2ljYWwg cGFja2FnZQpkb2Vzbid0IGhhdmUgdG8gYmUgZXhhY3RseSB4ODZfbWF4X2NvcmVzLCB3ZSBjYW4g aGF2ZSBhbnkgbnVtYmVyIG9mIENQVXMKPD0geDg2X21heF9jb3JlcyBhbmQgdGhleSBhbHNvIGRv bid0IGhhdmUgdG8gbWF0Y2ggZm9yIGFsbCBsb2dpY2FsCnBhY2thZ2VzLiBUaGlzIGJyZWFrcyB0 aGUgY3VycmVudCBjb25jZXB0IG9mIF9fbWF4X2xvZ2ljYWxfcGFja2FnZXMuCgpJbiB0aGlzIHBh dGNoIEkgc3VnZ2VzdCB3ZSBzZXQgX19tYXhfbG9naWNhbF9wYWNrYWdlcyBiYXNlZCBvbiB0aGUK bWF4X3BoeXNpY2FsX3BrZ19pZCBhbmQgdG90YWxfY3B1cywgdGhpcyBzaG91bGQgYmUgc2FmZSBh bmQgY292ZXIgYWxsCnBvc3NpYmxlIGNhc2VzLiBBbHRlcm5hdGl2ZWx5LCB3ZSBtYXkgdGhpbmsg YWJvdXQgZWxpbWluYXRpbmcgdGhlIGNvbmNlcHQKb2YgX19tYXhfbG9naWNhbF9wYWNrYWdlcyBj b21wbGV0ZWx5IGFuZCByZWx5aW5nIG9uIG1heF9waHlzaWNhbF9wa2dfaWQvCnRvdGFsX2NwdXMg d2hlcmUgd2UgY3VycmVudGx5IHVzZSB0b3BvbG9neV9tYXhfcGFja2FnZXMoKS4KClRoZSBpc3N1 ZSBjb3VsZCd2ZSBiZWVuIHNvbHZlZCBpbiBYZW4gdG9vIEkgZ3Vlc3MuIENQVUlEIHJldHVybmlu Zwp4ODZfbWF4X2NvcmVzIGNhbiBiZSB0d2Vha2VkIHRvIGJlIHRoZSBsb3dlcmVzdCg/KSBwb3Nz aWJsZSBudW1iZXIgb2YKYWxsIGxvZ2ljYWwgcGFja2FnZXMgb2YgdGhlIGd1ZXN0LgoKRml4ZXM6 IDlkODVlYjkxMTlmNCAoIng4Ni9zbXBib290OiBNYWtlIGxvZ2ljYWwgcGFja2FnZSBtYW5hZ2Vt ZW50IG1vcmUgcm9idXN0IikKU2lnbmVkLW9mZi1ieTogVml0YWx5IEt1em5ldHNvdiA8dmt1em5l dHNAcmVkaGF0LmNvbT4KLS0tCiBhcmNoL3g4Ni9rZXJuZWwvc21wYm9vdC5jIHwgMTAgKysrKysr KysrLQogMSBmaWxlIGNoYW5nZWQsIDkgaW5zZXJ0aW9ucygrKSwgMSBkZWxldGlvbigtKQoKZGlm ZiAtLWdpdCBhL2FyY2gveDg2L2tlcm5lbC9zbXBib290LmMgYi9hcmNoL3g4Ni9rZXJuZWwvc21w Ym9vdC5jCmluZGV4IGJkMWYxYWQuLjg1ZjQxY2QgMTAwNjQ0Ci0tLSBhL2FyY2gveDg2L2tlcm5l bC9zbXBib290LmMKKysrIGIvYXJjaC94ODYva2VybmVsL3NtcGJvb3QuYwpAQCAtMzU5LDcgKzM1 OSw2IEBAIHN0YXRpYyB2b2lkIF9faW5pdCBzbXBfaW5pdF9wYWNrYWdlX21hcChzdHJ1Y3QgY3B1 aW5mb194ODYgKmMsIHVuc2lnbmVkIGludCBjcHUpCiAJCW5jcHVzID0gMTsKIAl9CiAKLQlfX21h eF9sb2dpY2FsX3BhY2thZ2VzID0gRElWX1JPVU5EX1VQKHRvdGFsX2NwdXMsIG5jcHVzKTsKIAls b2dpY2FsX3BhY2thZ2VzID0gMDsKIAogCS8qCkBAIC0zNjcsNiArMzY2LDE1IEBAIHN0YXRpYyB2 b2lkIF9faW5pdCBzbXBfaW5pdF9wYWNrYWdlX21hcChzdHJ1Y3QgY3B1aW5mb194ODYgKmMsIHVu c2lnbmVkIGludCBjcHUpCiAJICogcGFja2FnZSBjYW4gYmUgc21hbGxlciB0aGFuIHRoZSBhY3R1 YWwgdXNlZCBhcGljIGlkcy4KIAkgKi8KIAltYXhfcGh5c2ljYWxfcGtnX2lkID0gRElWX1JPVU5E X1VQKE1BWF9MT0NBTF9BUElDLCBuY3B1cyk7CisKKwkvKgorCSAqIEVhY2ggbG9naWNhbCBwYWNr YWdlIGhhcyBub3QgbW9yZSB0aGFuIHg4Nl9tYXhfY29yZXMgQ1BVcyBidXQKKwkgKiBpdCBjYW4g aGFwcGVuIHRoYXQgaXQgaGFzIGxlc3MsIGUuZy4gd2UgbWF5IGhhdmUgMSBDUFUgcGVyIGxvZ2lj YWwKKwkgKiBwYWNrYWdlIHJlZ2FyZGxlc3Mgb2Ygd2hhdCdzIGluIHg4Nl9tYXhfY29yZXMuIFRo aXMgaXMgc2VlbiBvbiBzb21lCisJICogWGVuIHNldHVwcyB3aXRoIEFNRCBwcm9jZXNzb3JzLgor CSAqLworCV9fbWF4X2xvZ2ljYWxfcGFja2FnZXMgPSBtaW4obWF4X3BoeXNpY2FsX3BrZ19pZCwg dG90YWxfY3B1cyk7CisKIAlzaXplID0gbWF4X3BoeXNpY2FsX3BrZ19pZCAqIHNpemVvZih1bnNp Z25lZCBpbnQpOwogCXBoeXNpY2FsX3RvX2xvZ2ljYWxfcGtnID0ga21hbGxvYyhzaXplLCBHRlBf S0VSTkVMKTsKIAltZW1zZXQocGh5c2ljYWxfdG9fbG9naWNhbF9wa2csIDB4ZmYsIHNpemUpOwot LSAKMi45LjMKCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f XwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW4ub3JnCmh0dHBzOi8v bGlzdHMueGVuLm9yZy94ZW4tZGV2ZWwK