修改4g拨号为QMI,需要在系统里后台执行quectel-CM

hc

2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5

 kernel/tools/testing/selftests/powerpc/mm/prot_sao.c
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@@ -1,12 +1,13 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Copyright 2016, Michael Ellerman, IBM Corp.
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- * Licensed under GPLv2.
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  */
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 #include <stdio.h>
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 #include <stdlib.h>
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 #include <string.h>
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 #include <sys/mman.h>
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+#include <unistd.h>
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 #include <asm/cputable.h>
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@@ -18,8 +19,13 @@
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 {
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 	char *p;
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-	/* 2.06 or later should support SAO */
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-	SKIP_IF(!have_hwcap(PPC_FEATURE_ARCH_2_06));
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+	/*
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+	 * SAO was introduced in 2.06 and removed in 3.1. It's disabled in
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+	 * guests/LPARs by default, so also skip if we are running in a guest.
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+	 */
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+	SKIP_IF(!have_hwcap(PPC_FEATURE_ARCH_2_06) ||
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+		have_hwcap2(PPC_FEATURE2_ARCH_3_1) ||
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+		access("/proc/device-tree/rtas/ibm,hypertas-functions", F_OK) == 0);
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 	/*
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 	 * Ensure we can ask for PROT_SAO.