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x86/apic: Sanitize return value of apic.set_apic_id()
The set_apic_id() callback returns an unsigned long value which is handed in to apic_write() as the value argument u32. Adjust the return value so it returns u32 right away. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Juergen Gross <jgross@suse.com> Tested-by: Yu Chen <yu.c.chen@intel.com> Acked-by: Juergen Gross <jgross@suse.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Alok Kataria <akataria@vmware.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Rui Zhang <rui.zhang@intel.com> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Len Brown <lenb@kernel.org> Link: https://lkml.kernel.org/r/20170913213153.437208268@linutronix.de
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@ -305,7 +305,7 @@ struct apic {
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unsigned int (*get_apic_id)(unsigned long x);
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/* Can't be NULL on 64-bit */
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unsigned long (*set_apic_id)(unsigned int id);
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u32 (*set_apic_id)(unsigned int id);
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int (*cpu_mask_to_apicid)(const struct cpumask *cpumask,
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struct irq_data *irqdata,
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@ -119,7 +119,7 @@ static unsigned int flat_get_apic_id(unsigned long x)
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return (x >> 24) & 0xFF;
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}
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static unsigned long set_apic_id(unsigned int id)
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static u32 set_apic_id(unsigned int id)
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{
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return (id & 0xFF) << 24;
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}
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@ -38,7 +38,7 @@ static unsigned int numachip1_get_apic_id(unsigned long x)
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return id;
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}
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static unsigned long numachip1_set_apic_id(unsigned int id)
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static u32 numachip1_set_apic_id(unsigned int id)
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{
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return (id & 0xff) << 24;
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}
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@ -51,7 +51,7 @@ static unsigned int numachip2_get_apic_id(unsigned long x)
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return ((mcfg >> (28 - 8)) & 0xfff00) | (x >> 24);
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}
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static unsigned long numachip2_set_apic_id(unsigned int id)
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static u32 numachip2_set_apic_id(unsigned int id)
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{
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return id << 24;
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}
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@ -4,6 +4,6 @@ int x2apic_apic_id_valid(int apicid);
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int x2apic_apic_id_registered(void);
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void __x2apic_send_IPI_dest(unsigned int apicid, int vector, unsigned int dest);
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unsigned int x2apic_get_apic_id(unsigned long id);
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unsigned long x2apic_set_apic_id(unsigned int id);
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u32 x2apic_set_apic_id(unsigned int id);
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int x2apic_phys_pkg_id(int initial_apicid, int index_msb);
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void x2apic_send_IPI_self(int vector);
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@ -121,7 +121,7 @@ unsigned int x2apic_get_apic_id(unsigned long id)
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return id;
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}
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unsigned long x2apic_set_apic_id(unsigned int id)
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u32 x2apic_set_apic_id(unsigned int id)
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{
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return id;
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}
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@ -547,7 +547,7 @@ static unsigned int x2apic_get_apic_id(unsigned long x)
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return id;
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}
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static unsigned long set_apic_id(unsigned int id)
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static u32 set_apic_id(unsigned int id)
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{
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/* CHECKME: Do we need to mask out the xapic extra bits? */
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return id;
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@ -30,7 +30,7 @@ static unsigned int xen_io_apic_read(unsigned apic, unsigned reg)
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return 0xfd;
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}
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static unsigned long xen_set_apic_id(unsigned int x)
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static u32 xen_set_apic_id(unsigned int x)
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{
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WARN_ON(1);
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return x;
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