From nobody Fri Jul 10 16:03:45 2026 X-Original-To: dev-commits-src-main@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 4gxc8205V6z6lLnR for ; Fri, 10 Jul 2026 16:03:46 +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 "YR1" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4gxc812RwCz3J63 for ; Fri, 10 Jul 2026 16:03:45 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1783699425; 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=gN2+91ri0bQNsQl/cfWrAO19dcj7L39NyjeYjy8NRfc=; b=ipPt7ZILrbkljnTN7W0d8Z+JtTHXi6c2/AIJ4bHiuToDMbtgU/eOv8HB3U2TRmiT+GRWih wI1GoobPxod/xGTziM8JINBCmDPsiUz5FXB8fl6+0cJo3NvT/mbQehtaoJ3HjLQDQIPBKg UwN5fAz3fSqW92SeoAOUTvB+OmlCaaaw0BWK3srffBI99YV66rjZIDB+uFPLlz8Sc0VHit 8ZtJ9olEfj+NuL5Kza2xQ36lIc/m7TkKhEiSGCAQm2ElVMlziqXYQW45xAelvTY705KPbI 8r718mKQ8N1bLmNJzaHw0w4EiDKhL3hLqfJsd6ZqqgUIzzxZKl4YuNnBZsPIAA== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1783699425; a=rsa-sha256; cv=none; b=h3HLbhyZhWWPYATrjRk0tuqo4SNV0DykZa/OHdS4+/63CZ1kT2R4SA3NOpSMAEO1SsrD3o +qEfnZ+RZQWSfu1zznjo1N+IoxBhSh3FFvhY4zpqJpK7dmbrFjP4V2LEtD+9dQ2rfTOhxi yfZglskI5nc9pZMK4kB5nAPrgTqyTCI5BL6SbMnsFlJKbVk8KutGleoC+o/N8eCW/HXHw/ ldeNWmOKpq0n7McmV+1dKRTjlAjnE/8iueZOSIZdBDRmdmntZOas+2ryDZmYCQ1rBCwHam 3GN2HSre85dmpRTNBp88lajFkyRiQlAxmCo+p5Q0HpM3fhQJ8YIXrrZbhuUTwQ== 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=1783699425; 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=gN2+91ri0bQNsQl/cfWrAO19dcj7L39NyjeYjy8NRfc=; b=RKFxa79Q1jIeK/dAXpekaoDeO36ekyTXz4pKKSZ+yL+83YZgPpf1nGBcmhc4KcAvMkkx9r 3qVFlvy54nXzQbEwYfyTnrKtTucHRkaXBZW4kzG8D6Awh3vimeWWIG/pIEY5dg2uGOKygc uAmEB85Odb4/G+E27T6MoweiK3gyqam1FDR8mSCIM0RpdpEEsAiONmF4IOnMYZxWinVnQ2 hzojkt0TtdaQy/4I2U3MXl6MEVPb+CBGvFY5xAJ4VThUbqUNxMvFFMAgCZO9FKvR2evMOx riGs7BxjqbDtYx+HLAZLunh3Jo9prw398pYdNG5livadJH3KGNNdtflG0UyucQ== Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) by mxrelay.nyi.freebsd.org (Postfix) with ESMTP id 4gxc811H4Gz12ZK for ; Fri, 10 Jul 2026 16:03:45 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from git (uid 1279) (envelope-from git@FreeBSD.org) id 343ed by gitrepo.freebsd.org (DragonFly Mail Agent v0.13+ on gitrepo.freebsd.org); Fri, 10 Jul 2026 16:03:45 +0000 To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Bojan Novk=?utf-8?Q?ovi=C4=87?= Subject: git: 7489f0bf84e4 - main - riscv/mp_machdep.c: Flush the TLB after releasing APs List-Id: Commit messages for the main branch of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-main List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-main@freebsd.org Sender: owner-dev-commits-src-main@FreeBSD.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: bnovkov X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 7489f0bf84e4c88ad6cfbf4c8cf91bd7bede56f6 Auto-Submitted: auto-generated Date: Fri, 10 Jul 2026 16:03:45 +0000 Message-Id: <6a5117e1.343ed.375422b2@gitrepo.freebsd.org> The branch main has been updated by bnovkov: URL: https://cgit.FreeBSD.org/src/commit/?id=7489f0bf84e4c88ad6cfbf4c8cf91bd7bede56f6 commit 7489f0bf84e4c88ad6cfbf4c8cf91bd7bede56f6 Author: Bojan Novković AuthorDate: 2026-05-13 15:49:01 +0000 Commit: Bojan Novković CommitDate: 2026-07-10 15:52:52 +0000 riscv/mp_machdep.c: Flush the TLB after releasing APs Spurious page faults caused by cached invalid entries may occur when starting APs and potentially panic the kernel if we're running in a non-sleepable context. Fix this avoidable panic by flushing the TLB after the AP is released. Differential Revision: https://reviews.freebsd.org/D57003 Reviewed by: markj --- sys/riscv/riscv/mp_machdep.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/sys/riscv/riscv/mp_machdep.c b/sys/riscv/riscv/mp_machdep.c index 235bee15ca29..9c81d9ee1043 100644 --- a/sys/riscv/riscv/mp_machdep.c +++ b/sys/riscv/riscv/mp_machdep.c @@ -172,6 +172,11 @@ init_secondary(uint64_t hart) while (!atomic_load_int(&aps_ready)) __asm __volatile("wfi"); + /* + * Flush the TLB to avoid spurious kernel page faults + * on implementations that cache invalid entries. + */ + sfence_vma(); /* Initialize curthread */ KASSERT(PCPU_GET(idlethread) != NULL, ("no idle thread")); pcpup->pc_curthread = pcpup->pc_idlethread;