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 D7570C55ABF for ; Tue, 4 Aug 2026 10:37:14 +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=+OxPW8mlniSXnCjtZHoNv8WvpfopC27nZx/ugmJ7ouA=; b=itqEOP8ELlVOO6 RK+YiWSrUhTPAr2WikEBBkcuWrtgFmRTq85vzgEPQoIgDQDQ6GUOHXrZFyglI+sb+EsD7AQg5Zrbw 0i0TUbvcBiKRIjL/ExjITEBY+So0MyX1EGv5HoBtbZEMEAHaT66cmLNIoyqMhQst0xdt4L+isoD9A Ms1m28hcQfEVIxzFFIoVaaed22LyBQQWsJicjocznI7+Amrk31x47h3AfJ5T+IIm2Y9b9eqknpc5A HckA6o9m+7k6sOswx0U6bbsxFsT+eivd8QECv3iD3Szi5bNvzs6ekTe5hVeYJTOkhbKANpQzKmWnz dfLlS9XP5G7JUoI8h7Tg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wrCW7-00000001YXK-33Hd; Tue, 04 Aug 2026 10:37:03 +0000 Received: from out30-97.freemail.mail.aliyun.com ([115.124.30.97]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wrCW4-00000001YUb-40aL for linux-riscv@lists.infradead.org; Tue, 04 Aug 2026 10:37:02 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1785839819; h=From:To:Subject:Date:Message-ID:MIME-Version; bh=7hpONqRjO5c0M/yKXJ6veooXI3+oa4S7WBEo4b9UHV4=; b=gFkrD48O/eYFjHkUyWZtdkmNF40d727CcGsKkdmp19VzahTwV1JAk3VmXJnNB84bc52U7ZmUbg/R65IZijTRCTzcKLnB61G4mWWGYiq58fnztYhSOfzThcr+RhTUoXe9sAJOEgyNoCkxwbZB14M0UFEFnOPzZohvS5siIZmohlk= X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R971e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=maildocker-contentspam033037009110;MF=wanghan@linux.alibaba.com;NM=1;PH=DS;RN=34;SR=0;TI=SMTPD_---0X8Nlqct_1785839815; Received: from wanghan-Workstation..(mailfrom:wanghan@linux.alibaba.com fp:SMTPD_---0X8Nlqct_1785839815 cluster:ay36) by smtp.aliyun-inc.com; Tue, 04 Aug 2026 18:36:57 +0800 From: Wang Han To: Paul Walmsley , Palmer Dabbelt , Albert Ou Cc: Alexandre Ghiti , linux-riscv@lists.infradead.org, Oleg Nesterov , Steven Rostedt , Masami Hiramatsu , Mark Rutland , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , James Clark , Josh Poimboeuf , Jiri Kosina , Miroslav Benes , Petr Mladek , Joe Lawrence , Shuah Khan , oliver.yang@linux.alibaba.com, xueshuai@linux.alibaba.com, zhuo.song@linux.alibaba.com, jkchen@linux.alibaba.com, Marcos Paulo de Souza , 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 v5 6/7] riscv: Kconfig: enable HAVE_RELIABLE_STACKTRACE and HAVE_LIVEPATCH Date: Tue, 4 Aug 2026 18:36:25 +0800 Message-ID: <20260804103626.2803112-7-wanghan@linux.alibaba.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260804103626.2803112-1-wanghan@linux.alibaba.com> References: <20260804103626.2803112-1-wanghan@linux.alibaba.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260804_033701_174676_CF6169F4 X-CRM114-Status: UNSURE ( 9.97 ) 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 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 Signed-off-by: Wang Han --- arch/riscv/Kconfig | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index c2c2f5f3ed5e..b36f711ecf45 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 @@ -1392,3 +1394,5 @@ endmenu # "CPU Power Management" source "arch/riscv/kvm/Kconfig" source "drivers/acpi/Kconfig" + +source "kernel/livepatch/Kconfig" -- 2.43.0 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv