The hypercall of HVCALL_SEND_IPI_EX is not rep class. But simple class with variable header size. The arguments to hypercall happen to be correct. So it didn't matter so far. But now hv_do_hypercall uses xmm fast hypercall when applicable. Use hv_do_hypercall() instead of hv_do_rep_hypercall() for fast xmm hypercall. Signed-off-by: Isaku Yamahata <isaku.yamahata@xxxxxxxxx> --- arch/x86/hyperv/hv_apic.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/arch/x86/hyperv/hv_apic.c b/arch/x86/hyperv/hv_apic.c index 2c43e3055948..713a4e737081 100644 --- a/arch/x86/hyperv/hv_apic.c +++ b/arch/x86/hyperv/hv_apic.c @@ -99,6 +99,7 @@ static bool __send_ipi_mask_ex(const struct cpumask *mask, int vector) struct hv_send_ipi_ex *ipi_arg; unsigned long flags; int nr_bank = 0; + size_t ibytes; int ret = 1; if (!(ms_hyperv.hints & HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED)) @@ -124,8 +125,12 @@ static bool __send_ipi_mask_ex(const struct cpumask *mask, int vector) if (!nr_bank) ipi_arg->vp_set.format = HV_GENERIC_SET_ALL; - ret = hv_do_rep_hypercall(HVCALL_SEND_IPI_EX, 0, nr_bank, - ipi_arg, NULL); + /* see cpumask_to_vpset() and struct ipi_arg_ex */ + ibytes = sizeof(*ipi_arg) + + nr_bank * sizeof(ipi_arg->vp_set.bank_contents[0]); + ret = hv_do_hypercall( + HVCALL_SEND_IPI_EX | (nr_bank << HV_HYPERCALL_VARHEAD_OFFSET), + ipi_arg, ibytes ,NULL, 0); ipi_mask_ex_done: local_irq_restore(flags); -- 2.14.1
