From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 84C1EC88E64 for ; Mon, 14 Sep 2026 09:27:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=QAsnDCVXjo+MS5F6lb+U62tNrwR1/b9y6zFuVZDFe2E=; b=A24hAC4PCIgNls h2COGGDsGe+Aam9Q8OSd68JRB5PI2aKxt+7xxp4P36qKkFb5ewbkYglEEU+Q0L2HHJ0cuq/+oPlP9 FTf/ylAv6MMk6nypngt48kKtR25WOHRMogsomtwimJ7ldzM45ZlzvS+5CoBYkGNdjpuD3QjV5AHwK +prR9a/ol3+zFx1H8/j+8XMsm8jUh+aV3CWYROScKvsABmJnPDV1tp7b8ijDxttR6e9uuOZ1k5Atu F7Z+tg6DTflIntf1XEFfSpIggSh3h6/6i+T0jmr4fNNa0kTRH34VB4wyjgeocyzZYLmNN+CWaKIDo bZMzrD3n1ZDntvsse0OQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x62y2-00000002wzG-3T5P; Mon, 14 Sep 2026 09:27:15 +0000 Received: from out30-133.freemail.mail.aliyun.com ([115.124.30.133]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1x62xy-00000002wuZ-0uda for linux-riscv@lists.infradead.org; Mon, 14 Sep 2026 09:27:13 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1789378028; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=66ryLj95jczt6uzzPGSUF0kyBXvHX3cDcmK3PRg8KLA=; b=SnXulPUuVYwmKV13QdMsjlRwkWrOTC8lBpBUIeAs2MK/ivhFOMUTV5RFB8EBN2c1TVPHcQSkNFcb36LlznBbkodjU4LElRfFY8qs60aiPmOLbTdnVumrGouTdSTF6ilsuW00Qke8E7kCLSPmNIeffrqKlApC/iNvm5V1aMcwoDI= X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R941e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=maildocker-contentspam033045098064;MF=xueshuai@linux.alibaba.com;NM=1;PH=DS;RN=34;SR=0;TI=SMTPD_---0XAuO-pl_1789378024; Received: from localhost.localdomain(mailfrom:xueshuai@linux.alibaba.com fp:SMTPD_---0XAuO-pl_1789378024 cluster:ay36) by smtp.aliyun-inc.com; Mon, 14 Sep 2026 17:27:06 +0800 From: Shuai Xue To: palmer@dabbelt.com, pjw@kernel.org, aou@eecs.berkeley.edu Cc: alex@ghiti.fr, linux-riscv@lists.infradead.org, oleg@redhat.com, rostedt@goodmis.org, mhiramat@kernel.org, mark.rutland@arm.com, peterz@infradead.org, mingo@redhat.com, acme@kernel.org, namhyung@kernel.org, alexander.shishkin@linux.intel.com, jolsa@kernel.org, irogers@google.com, adrian.hunter@intel.com, james.clark@linaro.org, jpoimboe@kernel.org, jikos@kernel.org, mbenes@suse.cz, pmladek@suse.com, joe.lawrence@redhat.com, shuah@kernel.org, mpdesouza@suse.com, oliver.yang@linux.alibaba.com, zhuo.song@linux.alibaba.com, xueshuai@linux.alibaba.com, jkchen@linux.alibaba.com, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, live-patching@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH v6 6/7] riscv: Kconfig: enable HAVE_RELIABLE_STACKTRACE and HAVE_LIVEPATCH Date: Mon, 14 Sep 2026 17:26:47 +0800 Message-Id: <20260914092648.51254-7-xueshuai@linux.alibaba.com> X-Mailer: git-send-email 2.39.5 (Apple Git-154) In-Reply-To: <20260914092648.51254-1-xueshuai@linux.alibaba.com> References: <20260914092648.51254-1-xueshuai@linux.alibaba.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260914_022710_410087_602CF4CE X-CRM114-Status: UNSURE ( 7.42 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Wang Han Now that the metadata frame records, the kunwind state machine and arch_stack_walk_reliable() are all in place, advertise the capability to the rest of the kernel: * select HAVE_RELIABLE_STACKTRACE under FRAME_POINTER && 64BIT, so only the configurations with the tested metadata records and FP-based reliable walker enable it. * select HAVE_LIVEPATCH under the same condition and source kernel/livepatch/Kconfig so the livepatch menu is reachable from the RISC-V configuration. The 64BIT dependency is conservative scoping rather than a hard technical requirement: the metadata frame record, kunwind state machine and arch_stack_walk_reliable() also build on RV32, and the IRQ-stack frame-record adjustment fixes a latent RV32 issue. However, the syscall livepatch selftest and module relocation path have only been exercised on RV64 QEMU virt so far. The 64BIT gate can be relaxed in a follow-up once RV32 has equivalent coverage. This is split out from the unwinder change so the policy decision and the implementation can be reviewed and reverted independently. Reviewed-by: Shuai Xue Assisted-by: Qoder:Qwen-3.8-MAX-Preview Signed-off-by: Wang Han Signed-off-by: Shuai Xue --- arch/riscv/Kconfig | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index bf2e81d258c4d..b92e02481198f 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -186,6 +186,7 @@ config RISCV select HAVE_KRETPROBES # https://github.com/ClangBuiltLinux/linux/issues/1881 select HAVE_LD_DEAD_CODE_DATA_ELIMINATION if !LD_IS_LLD + select HAVE_LIVEPATCH if FRAME_POINTER && 64BIT select HAVE_MOVE_PMD select HAVE_MOVE_PUD select HAVE_PAGE_SIZE_4KB @@ -196,6 +197,7 @@ config RISCV select HAVE_POSIX_CPU_TIMERS_TASK_WORK select HAVE_PREEMPT_DYNAMIC_KEY select HAVE_REGS_AND_STACK_ACCESS_API + select HAVE_RELIABLE_STACKTRACE if FRAME_POINTER && 64BIT select HAVE_RETHOOK select HAVE_RSEQ select HAVE_RUST if RUSTC_SUPPORTS_RISCV && CC_IS_CLANG @@ -1411,3 +1413,5 @@ endmenu # "CPU Power Management" source "arch/riscv/kvm/Kconfig" source "drivers/acpi/Kconfig" + +source "kernel/livepatch/Kconfig" -- 2.39.3 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv