From nobody Sun Oct 22 15:04:49 2023 X-Original-To: dev-commits-src-all@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 4SD1nt2Vwrz4xR1t; Sun, 22 Oct 2023 15:04:50 +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 4SD1ns5T9yz4M1g; Sun, 22 Oct 2023 15:04:49 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1697987089; 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=ym7FCM7+7H4HGRV1Re3OzvfWsrZvgeLuAZbZ25Ci8sU=; b=ZQDLeU4oVNPrYom0jzdGAPTPUgf7/wP7dN0g3zj1lNCA6uueeKw83ngr2yZ9q0UHVitgwp teQXNkupYZTaazrQJKxUctzaeT3E/PVgY4WTy5yI3tZrfDo3x0rPdZqY9aoCqYlTJDlAH0 pQhkdbIuhIkvmGbsbaYreQnycrg2NnSSKHZv82bqK8ujtSeQmc8WLlistxM17+OUVwyPa5 k+LjF28MppbpXKEFAUfmxuAkmsDDHqKHZDskgYi2F7s2RDihHutZkWcqVUD50Z1KFBduzZ T6z/xgVCb5DUnkbkv8kaIHG/KxifKbWqof8WioPGxGMM76mrNMKdvqrqlaCDUg== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1697987089; a=rsa-sha256; cv=none; b=OGzbBiH0hfd2iKSbi7OvkZNXGTk5ONp8QkbETVf8a2tOwf+u3/yNoMmDW67j2GX5aqsPEr rP4jeYJLotIj+qGJPc6yJjbPs5Xrve5GPIvPjjwuUeeNh7h/g3FXNzxDjjwp1JlWV7DvQP 1HN+A++eZ/yqcjo424wbz4k2FAeEC8zTTjVeCDKoh7TVZRc5y9g5uEd3a/j4j1tlSxH38q 9YnP+3YdS2nvYUWBsAddzFXzJ/r/k1ihs7TmfECjYcdeA7blMeA+rYV3kFeJIGyyi+kswp we8zGDWiyKrnSa6jyk00WqITEpPZq54nYqnqEGg0cQ1un4yt1fzUYEgyKmQaaA== 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=1697987089; 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=ym7FCM7+7H4HGRV1Re3OzvfWsrZvgeLuAZbZ25Ci8sU=; b=UzzFfkwmgiOVkXrYyYz2kfNeuDCYvDdmZVfRk8Gc6NI2XJZ7Kfcr7mJvNsiiuCulyN30pp AhSyns1w7Go2UalT5XFkE7VM9cn92TYKw5EYoAV3nLlqX7DH14L7t0UIP8gf44A3bFqRjH ++gmVVXVkzbmd6wN/8RP8hAYqYb43XgePnYbNToc0o8wnx5SuIfVK5MeVYyncITeIelBuV TqLRLWZRXA55beOyBDTydM3tMqTSGI+r7mKDkJjOgzMY1bAWEJg7gGbA9GSgv2zDeWGZWU Pqn2QrM5iO8tK/clBTlKl4nzmm4sx1/UIXXnKEsRgpomohBrahBXDBa1BvXJEw== 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 4SD1ns4NcWz12Ck; Sun, 22 Oct 2023 15:04:49 +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 39MF4nhO033639; Sun, 22 Oct 2023 15:04:49 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.17.1/8.17.1/Submit) id 39MF4nrs033636; Sun, 22 Oct 2023 15:04:49 GMT (envelope-from git) Date: Sun, 22 Oct 2023 15:04:49 GMT Message-Id: <202310221504.39MF4nrs033636@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: e4d86dda3413 - releng/14.0 - amd64: Zero-fill AP PCPU pages List-Id: Commit messages for all branches of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-all List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-all@freebsd.org X-BeenThere: dev-commits-src-all@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/releng/14.0 X-Git-Reftype: branch X-Git-Commit: e4d86dda34133fdeb8674fc8774be3c311a374b1 Auto-Submitted: auto-generated The branch releng/14.0 has been updated by markj: URL: https://cgit.FreeBSD.org/src/commit/?id=e4d86dda34133fdeb8674fc8774be3c311a374b1 commit e4d86dda34133fdeb8674fc8774be3c311a374b1 Author: Mark Johnston AuthorDate: 2023-10-16 22:40:21 +0000 Commit: Mark Johnston CommitDate: 2023-10-22 15:01:36 +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. Approved by: re (gjb) 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) (cherry picked from commit 4533fa42ad912537a15d72068f2cfca46a465521) --- 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);