[Xen-devel] [PATCH] x86/HVM: avoid truncation of PM timer I/O port range version

[Jan Beulich <jbeulich@xxxxxxxx>]

Don't silently ignore the upper 32 bits.

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

--- a/xen/arch/x86/hvm/pmtimer.c
+++ b/xen/arch/x86/hvm/pmtimer.c
@@ -313,9 +313,9 @@ static int acpi_load(struct domain *d, h
 HVM_REGISTER_SAVE_RESTORE(PMTIMER, acpi_save, acpi_load,
                           1, HVMSR_PER_DOM);
 
-int pmtimer_change_ioport(struct domain *d, unsigned int version)
+int pmtimer_change_ioport(struct domain *d, uint64_t version)
 {
-    unsigned int old_version;
+    uint64_t old_version;
 
     if ( !has_vpm(d) )
         return -ENODEV;
--- a/xen/include/asm-x86/hvm/vpt.h
+++ b/xen/include/asm-x86/hvm/vpt.h
@@ -188,7 +188,7 @@ void rtc_update_clock(struct domain *d);
 void pmtimer_init(struct vcpu *v);
 void pmtimer_deinit(struct domain *d);
 void pmtimer_reset(struct domain *d);
-int pmtimer_change_ioport(struct domain *d, unsigned int version);
+int pmtimer_change_ioport(struct domain *d, uint64_t version);
 
 void hpet_init(struct domain *d);
 void hpet_deinit(struct domain *d);

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