On Tue, Sep 22, 2020 at 07:42:56PM +0800, shuo.a....@intel.com wrote: > From: Shuo Liu <shuo.a....@intel.com> > > The ACRN Hypervisor builds an I/O request when a trapped I/O access > happens in User VM. Then, ACRN Hypervisor issues an upcall by sending > a notification interrupt to the Service VM. HSM in the Service VM needs > to hook the notification interrupt to handle I/O requests. > > Notification interrupts from ACRN Hypervisor are already supported and > a, currently uninitialized, callback called. > > Export two APIs for HSM to setup/remove its callback. > > Originally-by: Yakui Zhao <yakui.z...@intel.com> > Signed-off-by: Shuo Liu <shuo.a....@intel.com> > Reviewed-by: Zhi Wang <zhi.a.w...@intel.com> > Reviewed-by: Reinette Chatre <reinette.cha...@intel.com> > Cc: Dave Hansen <dave.han...@intel.com> > Cc: Sean Christopherson <sean.j.christopher...@intel.com> > Cc: Dan Williams <dan.j.willi...@intel.com> > Cc: Fengwei Yin <fengwei....@intel.com> > Cc: Zhi Wang <zhi.a.w...@intel.com> > Cc: Zhenyu Wang <zhen...@linux.intel.com> > Cc: Yu Wang <yu1.w...@intel.com> > Cc: Reinette Chatre <reinette.cha...@intel.com> > Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org> > --- > arch/x86/include/asm/acrn.h | 8 ++++++++ > arch/x86/kernel/cpu/acrn.c | 16 ++++++++++++++++ > 2 files changed, 24 insertions(+) > create mode 100644 arch/x86/include/asm/acrn.h > > diff --git a/arch/x86/include/asm/acrn.h b/arch/x86/include/asm/acrn.h > new file mode 100644 > index 000000000000..ff259b69cde7 > --- /dev/null > +++ b/arch/x86/include/asm/acrn.h > @@ -0,0 +1,8 @@ > +/* SPDX-License-Identifier: GPL-2.0 */ > +#ifndef _ASM_X86_ACRN_H > +#define _ASM_X86_ACRN_H > + > +void acrn_setup_intr_handler(void (*handler)(void)); > +void acrn_remove_intr_handler(void); > + > +#endif /* _ASM_X86_ACRN_H */ > diff --git a/arch/x86/kernel/cpu/acrn.c b/arch/x86/kernel/cpu/acrn.c > index 0b2c03943ac6..42e88d01ccf9 100644 > --- a/arch/x86/kernel/cpu/acrn.c > +++ b/arch/x86/kernel/cpu/acrn.c > @@ -9,7 +9,11 @@ > * > */ > > +#define pr_fmt(fmt) "acrn: " fmt
Why is this needed, if you are not adding pr_* calls in this patch? thanks, greg k-h
