On Sun 27.Sep'20 at 12:49:43 +0200, Greg Kroah-Hartman wrote:
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?
True. I will remove it. Thanks.
