Export the max_physical_apicid via a helper function since this information
is required by AMD SVM AVIC support.
Reviewed-by: Tom Lendacky <thomas.lendacky@xxxxxxx>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@xxxxxxx>
---
arch/x86/include/asm/apic.h | 1 +
arch/x86/kernel/apic/apic.c | 6 ++++++
2 files changed, 7 insertions(+)
diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h
index 48067af94678..77d9cb2a7e28 100644
--- a/arch/x86/include/asm/apic.h
+++ b/arch/x86/include/asm/apic.h
@@ -435,6 +435,7 @@ static inline void apic_set_eoi_write(void (*eoi_write)(u32 reg, u32 v)) {}
#endif /* CONFIG_X86_LOCAL_APIC */
extern void apic_ack_irq(struct irq_data *data);
+extern u32 apic_get_max_phys_apicid(void);
static inline void ack_APIC_irq(void)
{
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index b70344bf6600..47653d8c05f2 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -2361,6 +2361,12 @@ bool apic_id_is_primary_thread(unsigned int apicid)
}
#endif
+u32 apic_get_max_phys_apicid(void)
+{
+ return max_physical_apicid;
+}
+EXPORT_SYMBOL_GPL(apic_get_max_phys_apicid);
+
/*
* Should use this API to allocate logical CPU IDs to keep nr_logical_cpuids
* and cpuid_to_apicid[] synchronized.
--
2.25.1
