Hi, Glauber

This is interesting facility. :-)

>+#define KVM_HCALL_REGISTER_CLOCK      1
>+
>+union kvm_hv_clock {
>+      struct {
>+              u64 tsc_mult;
>+              u64 now_ns;
>+              /* That's the wall clock, not the water closet */
>+              u64 wc_sec;
>+              u64 wc_nsec;
>+              u64 last_tsc;
>+              /* At first, we could use the tsc value as a marker, but Jeremy
>+               * well noted that it will cause us locking problems in 32-bit
>+               * sys, so we have a special version field */
>+              u32 version;
>+      };
>+      char page_align[PAGE_SIZE];
>+};
>+
Why does kvm_hv_clock need page_align?
And also the kvm_hv_clock is alloced with kvm_vcpu,
so the align is not enough, isn't it?
I thik __atribute__((__aligne__(PAGE_SIZE)))) is better than it.

Best Regards,

Akio Takebe


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