From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 23A2B15AE3 for ; Wed, 9 Aug 2023 10:48:31 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 963EBC433C8; Wed, 9 Aug 2023 10:48:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1691578111; bh=HrlcznPUuesblsN4lOcCOJN0KJIc0hSH0DpbLASXFak=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=2iUswpED5Yg03OjQt8i3ukuQMmTK9FAzuS1Epz/1bQTEKynfa/CpSR0vqRY3HVBUI 40ZOdmjxu76VaUCxSeKRo3H34+r0Oj8JaukLLVJv59hC/xtQeKOOV7D4WKq0VcYRLC 0Dk3fCI4ZHG1kYqK13niJGJkyRQAmYDvJT6GW+24= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Song Shuai , =?UTF-8?q?Xianting=20Tian=C2=A0?= , Alexandre Ghiti , Palmer Dabbelt Subject: [PATCH 6.4 110/165] riscv: Export va_kernel_pa_offset in vmcoreinfo Date: Wed, 9 Aug 2023 12:40:41 +0200 Message-ID: <20230809103646.387491921@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230809103642.720851262@linuxfoundation.org> References: <20230809103642.720851262@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Song Shuai commit fbe7d19d2b7fcbd38905ba9f691be8f245c6faa6 upstream. Since RISC-V Linux v6.4, the commit 3335068f8721 ("riscv: Use PUD/P4D/PGD pages for the linear mapping") changes phys_ram_base from the physical start of the kernel to the actual start of the DRAM. The Crash-utility's VTOP() still uses phys_ram_base and kernel_map.virt_addr to translate kernel virtual address, that failed the Crash with Linux v6.4 [1]. Export kernel_map.va_kernel_pa_offset in vmcoreinfo to help Crash translate the kernel virtual address correctly. Fixes: 3335068f8721 ("riscv: Use PUD/P4D/PGD pages for the linear mapping") Link: https://lore.kernel.org/linux-riscv/20230724040649.220279-1-suagrfillet@gmail.com/ [1] Signed-off-by: Song Shuai Reviewed-by: Xianting Tian  Reviewed-by: Alexandre Ghiti Link: https://lore.kernel.org/r/20230724100917.309061-1-suagrfillet@gmail.com Cc: stable@vger.kernel.org Signed-off-by: Palmer Dabbelt Signed-off-by: Greg Kroah-Hartman --- arch/riscv/kernel/crash_core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/riscv/kernel/crash_core.c b/arch/riscv/kernel/crash_core.c index b351a3c01355..55f1d7856b54 100644 --- a/arch/riscv/kernel/crash_core.c +++ b/arch/riscv/kernel/crash_core.c @@ -18,4 +18,6 @@ void arch_crash_save_vmcoreinfo(void) vmcoreinfo_append_str("NUMBER(MODULES_END)=0x%lx\n", MODULES_END); #endif vmcoreinfo_append_str("NUMBER(KERNEL_LINK_ADDR)=0x%lx\n", KERNEL_LINK_ADDR); + vmcoreinfo_append_str("NUMBER(va_kernel_pa_offset)=0x%lx\n", + kernel_map.va_kernel_pa_offset); } -- 2.41.0