enable tun/tap/iptables

hc

2024-05-10 ee930fffee469d076998274a2ca55e13dc1efb67

 kernel/arch/x86/include/asm/bootparam_utils.h
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@@ -38,7 +38,7 @@
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 	 * IMPORTANT NOTE TO BOOTLOADER AUTHORS: do not simply clear
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 	 * this field.  The purpose of this field is to guarantee
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 	 * compliance with the x86 boot spec located in
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-	 * Documentation/x86/boot.txt .  That spec says that the
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+	 * Documentation/x86/boot.rst .  That spec says that the
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 	 * *whole* structure should be cleared, after which only the
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 	 * portion defined by struct setup_header (boot_params->hdr)
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 	 * should be copied in.
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@@ -49,7 +49,6 @@
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 	 * problems again.
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 	 */
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 	if (boot_params->sentinel) {
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-		/* fields in boot_params are left uninitialized, clear them */
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 		static struct boot_params scratch;
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 		char *bp_base = (char *)boot_params;
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 		char *save_base = (char *)&scratch;