xen/bootup: allow read_tscp call for Xen PV guests.
The hypervisor will trap it. However without this patch, we would crash as the .read_tscp is set to NULL. This patch fixes it and sets it to the native_read_tscp call. CC: stable@vger.kernel.org Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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@ -1164,6 +1164,8 @@ static const struct pv_cpu_ops xen_cpu_ops __initconst = {
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.read_tsc = native_read_tsc,
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.read_pmc = native_read_pmc,
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.read_tscp = native_read_tscp,
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.iret = xen_iret,
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.irq_enable_sysexit = xen_sysexit,
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#ifdef CONFIG_X86_64
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