add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/x86/xen/apic.c
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@@ -1,8 +1,10 @@
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 // SPDX-License-Identifier: GPL-2.0
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 #include <linux/init.h>
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+#include <linux/thread_info.h>
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 #include <asm/x86_init.h>
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 #include <asm/apic.h>
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+#include <asm/io_apic.h>
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 #include <asm/xen/hypercall.h>
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 #include <xen/xen.h>
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@@ -58,10 +60,6 @@
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 	if (reg == APIC_LVR)
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 		return 0x14;
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-#ifdef CONFIG_X86_32
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-	if (reg == APIC_LDR)
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-		return SET_APIC_LOGICAL_ID(1UL << smp_processor_id());
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-#endif
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 	if (reg != APIC_ID)
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 		return 0;
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@@ -127,14 +125,6 @@
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 	return initial_apic_id >> index_msb;
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 }
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-#ifdef CONFIG_X86_32
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-static int xen_x86_32_early_logical_apicid(int cpu)
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-{
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-	/* Match with APIC_LDR read. Otherwise setup_local_APIC complains. */
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-	return 1 << cpu;
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-}
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-#endif
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-
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 static void xen_noop(void)
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 {
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 }
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@@ -197,11 +187,6 @@
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 	.icr_write 			= xen_apic_icr_write,
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 	.wait_icr_idle 			= xen_noop,
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 	.safe_wait_icr_idle 		= xen_safe_apic_wait_icr_idle,
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-
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-#ifdef CONFIG_X86_32
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-	/* generic_processor_info and setup_local_APIC. */
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-	.x86_32_early_logical_apicid	= xen_x86_32_early_logical_apicid,
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-#endif
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 };
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 static void __init xen_apic_check(void)