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 1FD231AED4A; Tue, 18 Jun 2024 12:42:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718714539; cv=none; b=GgcWuKELWDnVK0Hr1mKjsN57DeyWMpoONSOvZH6LmvafmWFWol9aClhPe03QOqZB/EQtyqfRyHDvegaXmNx8tRUf/Em3UjKFbOSLNkXQvalVhMN3oI+9Rl6f1WSfMw/buUgPgMc/DwFx5szyTtQyHjJhEDjrZ2JypWYYXlvm5Kg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718714539; c=relaxed/simple; bh=cx592+iKFqXiOnvXyX+31L13tpfxsiMcgxmxVGX9NpY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=XflQX26vcHzwRPC05QxhIGNKH+t1rWuDJPpE/vFO/KZKI+/pGlxJX9oxeJgJhWYpX2p2ofA1UQ8Pk2qZ+UoUunXN+/jZWB7hB3P2bLMxpvrt/xeMp0nwSSbiR7cBM/WLfrGle0mjQUJYBJxHx316LiVGmXcUPo8MlwP7a6os/xg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=r/7BLxPE; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="r/7BLxPE" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 90A91C32786; Tue, 18 Jun 2024 12:42:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1718714537; bh=cx592+iKFqXiOnvXyX+31L13tpfxsiMcgxmxVGX9NpY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=r/7BLxPEK+6RVl3IS3bSge4dMSQ64cSQmKhegcwOfI7A3lQ1+uH00urQhvvY0vjoO L2/0NFEHm6bG+yyHCZX5NMWGLeWgfJm12MW78XZM1HQV/YkqwpH1Av9OxgzFQ3morM m3N3Ty4tj8GTGG0tXDeDrl169NndBr/df0OaqN15xF7G/CcejQIAbqCjzkuCCpCZtD Ga3TvNIqnF1JJUORrIUPaq71zxqPjcQ0DXQOe/InRUTxQk3QFuF0RtVXqukMXoQ+F2 WW+nFUwd66SoWoS4eaJBpv5JItE3Ht6Eq5Ik8mOpZ5MDNjE1SiZfTx/wU5MkrOiCtf B8U9uHIsKG9Yw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Wei Li , Huisong Li , Will Deacon , Sasha Levin , catalin.marinas@arm.com, mcgrof@kernel.org, j.granados@samsung.com, linux-arm-kernel@lists.infradead.org Subject: [PATCH AUTOSEL 5.15 18/21] arm64: armv8_deprecated: Fix warning in isndep cpuhp starting process Date: Tue, 18 Jun 2024 08:41:17 -0400 Message-ID: <20240618124139.3303801-18-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240618124139.3303801-1-sashal@kernel.org> References: <20240618124139.3303801-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 5.15.161 Content-Transfer-Encoding: 8bit From: Wei Li [ Upstream commit 14951beaec93696b092a906baa0f29322cf34004 ] The function run_all_insn_set_hw_mode() is registered as startup callback of 'CPUHP_AP_ARM64_ISNDEP_STARTING', it invokes set_hw_mode() methods of all emulated instructions. As the STARTING callbacks are not expected to fail, if one of the set_hw_mode() fails, e.g. due to el0 mixed-endian is not supported for 'setend', it will report a warning: ``` CPU[2] cannot support the emulation of setend CPU 2 UP state arm64/isndep:starting (136) failed (-22) CPU2: Booted secondary processor 0x0000000002 [0x414fd0c1] ``` To fix it, add a check for INSN_UNAVAILABLE status and skip the process. Signed-off-by: Wei Li Tested-by: Huisong Li Link: https://lore.kernel.org/r/20240423093501.3460764-1-liwei391@huawei.com Signed-off-by: Will Deacon Signed-off-by: Sasha Levin --- arch/arm64/kernel/armv8_deprecated.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm64/kernel/armv8_deprecated.c b/arch/arm64/kernel/armv8_deprecated.c index 91eabe56093d6..91c29979aea79 100644 --- a/arch/arm64/kernel/armv8_deprecated.c +++ b/arch/arm64/kernel/armv8_deprecated.c @@ -471,6 +471,9 @@ static int run_all_insn_set_hw_mode(unsigned int cpu) for (i = 0; i < ARRAY_SIZE(insn_emulations); i++) { struct insn_emulation *insn = insn_emulations[i]; bool enable = READ_ONCE(insn->current_mode) == INSN_HW; + if (insn->status == INSN_UNAVAILABLE) + continue; + if (insn->set_hw_mode && insn->set_hw_mode(enable)) { pr_warn("CPU[%u] cannot support the emulation of %s", cpu, insn->name); -- 2.43.0