From nobody Fri Oct 20 16:02:30 2023 X-Original-To: dev-commits-src-branches@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4SBq9M3CVwz4xx69; Fri, 20 Oct 2023 16:02:31 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4SBq9L51V7z3HZR; Fri, 20 Oct 2023 16:02:30 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1697817750; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=wqzGpYtzjhle25n0gSHi8jUP06BnoqJWEw7MwNz7p4k=; b=NXyUvc+ASzOk0H/N4IV6kyYnn6RwSchQetCe7vGyP+XR5rXwSrvYoBtY7IY6YRXqbH127F pv8DajZsXq+ZCE6YzPedne7uxg/1ztynlhB81+SxUua1IauDVxjidQnnKUrTUhEdCkTJs8 h/kHe5EvWowgJj6rq+7Hmw5U+BDVu2xiX+HtswSmHJkVCVx8ikhsGyZaz1ZSsfnl87+Lgd wm6Y2Xjlon7+cIzshA0/wiJ9j6K/gGG0+9XHohvLiDgjtQSjMRUc3xmXiDewpnfLNr/xza TKhc40IfBKu9A4BZtr3yXOEHC34gauB/HR5q/boU7+tw5FUTmlC8Lzaapys3CA== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1697817750; a=rsa-sha256; cv=none; b=REOe1CKelNhlZc9WQ3nvJ/9ixzVn04s+vpqEdC6cAVsVH6NNvXzqE//nnn5jqqbJV8KJ5Q TGekJIbNU5Y0bFbYNUgdLIE5UDpmpXcXhxOsslo1yTSz9DHPhUEFKDm5U5zsQJf2jKPnrc 4H2gAZMUpY8wDrmFLX8m95eCfDF1LjsRAv5j68osSNLZOHt+aAvLwBQ+nKDLq4gQqh25oh cnnkA0HEIYvubBxupySy3E17CKNJf9In5ZdAzngCAOisTyoI31pBZD+1RwYG7Tf3Ylhji7 uYGROAHez0IkD1ONBkLPKRLRfKspzXf+ZYWNpcVPQ9EFGjLUL5k0mc+v3AVdZQ== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1697817750; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=wqzGpYtzjhle25n0gSHi8jUP06BnoqJWEw7MwNz7p4k=; b=A9eHHv8k4YEZYEJhgdqxQ+/ddLjXWWLjA1PbSvQsVweXvuYeKjqLF9UZXXCsEzU1iCSvE6 bAA0OHVlOqJdRwhrSGHPv4AkUcwjgYstGmSDFsTDy5yfcQvy9Fn9plUt4f52mKVBQL2+28 vQHk+HfkSJiJpm4xE/1he7lLp5DyFvgkKs5RDXQ/DwPVd/zx0Sn5r92lFenj65hwPKZvUD zmPOGJ8kxtDFq9mxx6DXFY/s/LhMFyLKve6SGV0gWSI34is72H2+8D2QBZH2MSKOihOwP7 Sa/TnURlOu9O1EhufhAP+XNMpXlM+BVdnt27wTAwEPwA6R6mg+oSlHSnq/1Hwg== Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4SBq9L1ZRkzfvQ; Fri, 20 Oct 2023 16:02:30 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.17.1/8.17.1) with ESMTP id 39KG2U2T038945; Fri, 20 Oct 2023 16:02:30 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.17.1/8.17.1/Submit) id 39KG2UJL038942; Fri, 20 Oct 2023 16:02:30 GMT (envelope-from git) Date: Fri, 20 Oct 2023 16:02:30 GMT Message-Id: <202310201602.39KG2UJL038942@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Mark Johnston Subject: git: 4533fa42ad91 - stable/14 - amd64: Zero-fill AP PCPU pages List-Id: Commits to the stable branches of the FreeBSD src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-branches List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-branches@freebsd.org X-BeenThere: dev-commits-src-branches@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: markj X-Git-Repository: src X-Git-Refname: refs/heads/stable/14 X-Git-Reftype: branch X-Git-Commit: 4533fa42ad912537a15d72068f2cfca46a465521 Auto-Submitted: auto-generated The branch stable/14 has been updated by markj: URL: https://cgit.FreeBSD.org/src/commit/?id=4533fa42ad912537a15d72068f2cfca46a465521 commit 4533fa42ad912537a15d72068f2cfca46a465521 Author: Mark Johnston AuthorDate: 2023-10-16 22:40:21 +0000 Commit: Mark Johnston CommitDate: 2023-10-20 16:02:05 +0000 amd64: Zero-fill AP PCPU pages At least KMSAN relies on zero-initialization of AP PCPU regions, see commit 4b136ef259ce. Prior to commit af1c6d3f3013 these were allocated with allocpages() in the amd64 pmap, which always returns zero-initialized memory. Reviewed by: kib Fixes: af1c6d3f3013 ("amd64: do not leak pcpu pages") MFC after: 3 days Sponsored by: Klara, Inc. Sponsored by: Juniper Networks, Inc. Differential Revision: https://reviews.freebsd.org/D42241 (cherry picked from commit a37e484d049758c70f2d61be0d28a115b6f2f01e) --- sys/amd64/amd64/mp_machdep.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/sys/amd64/amd64/mp_machdep.c b/sys/amd64/amd64/mp_machdep.c index ec4501c3aeed..d506ffada4b9 100644 --- a/sys/amd64/amd64/mp_machdep.c +++ b/sys/amd64/amd64/mp_machdep.c @@ -300,11 +300,12 @@ amd64_mp_alloc_pcpu(void) m = NULL; if (vm_ndomains > 1) { m = vm_page_alloc_noobj_domain( - acpi_pxm_get_cpu_locality(cpu_apic_ids[cpu]), 0); + acpi_pxm_get_cpu_locality(cpu_apic_ids[cpu]), + VM_ALLOC_ZERO); } if (m == NULL) #endif - m = vm_page_alloc_noobj(0); + m = vm_page_alloc_noobj(VM_ALLOC_ZERO); if (m == NULL) panic("cannot alloc pcpu page for cpu %d", cpu); pmap_qenter((vm_offset_t)&__pcpu[cpu], &m, 1);