From: shuo.a.liu@intel.com
To: linux-kernel@vger.kernel.org, x86@kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"H . Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Sean Christopherson <sean.j.christopherson@intel.com>,
Yu Wang <yu1.wang@intel.com>,
Reinette Chatre <reinette.chatre@intel.com>,
Shuo Liu <shuo.a.liu@intel.com>,
Yakui Zhao <yakui.zhao@intel.com>,
Zhi Wang <zhi.a.wang@intel.com>,
Dave Hansen <dave.hansen@intel.com>,
Dan Williams <dan.j.williams@intel.com>,
Fengwei Yin <fengwei.yin@intel.com>,
Zhenyu Wang <zhenyuw@linux.intel.com>
Subject: [PATCH v6 02/18] x86/acrn: Introduce acrn_{setup, remove}_intr_handler()
Date: Tue, 1 Dec 2020 17:38:37 +0800 [thread overview]
Message-ID: <20201201093853.12070-3-shuo.a.liu@intel.com> (raw)
In-Reply-To: <20201201093853.12070-1-shuo.a.liu@intel.com>
From: Shuo Liu <shuo.a.liu@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.zhao@intel.com>
Signed-off-by: Shuo Liu <shuo.a.liu@intel.com>
Reviewed-by: Zhi Wang <zhi.a.wang@intel.com>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Sean Christopherson <sean.j.christopherson@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Fengwei Yin <fengwei.yin@intel.com>
Cc: Zhi Wang <zhi.a.wang@intel.com>
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Cc: Yu Wang <yu1.wang@intel.com>
Cc: Reinette Chatre <reinette.chatre@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/include/asm/acrn.h | 8 ++++++++
arch/x86/kernel/cpu/acrn.c | 14 ++++++++++++++
2 files changed, 22 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..e0c181781905 100644
--- a/arch/x86/kernel/cpu/acrn.c
+++ b/arch/x86/kernel/cpu/acrn.c
@@ -10,6 +10,8 @@
*/
#include <linux/interrupt.h>
+
+#include <asm/acrn.h>
#include <asm/apic.h>
#include <asm/cpufeatures.h>
#include <asm/desc.h>
@@ -55,6 +57,18 @@ DEFINE_IDTENTRY_SYSVEC(sysvec_acrn_hv_callback)
set_irq_regs(old_regs);
}
+void acrn_setup_intr_handler(void (*handler)(void))
+{
+ acrn_intr_handler = handler;
+}
+EXPORT_SYMBOL_GPL(acrn_setup_intr_handler);
+
+void acrn_remove_intr_handler(void)
+{
+ acrn_intr_handler = NULL;
+}
+EXPORT_SYMBOL_GPL(acrn_remove_intr_handler);
+
const __initconst struct hypervisor_x86 x86_hyper_acrn = {
.name = "ACRN",
.detect = acrn_detect,
--
2.28.0
next prev parent reply other threads:[~2020-12-01 9:40 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-01 9:38 [PATCH v6 00/18] HSM driver for ACRN hypervisor shuo.a.liu
2020-12-01 9:38 ` [PATCH v6 01/18] docs: acrn: Introduce ACRN shuo.a.liu
2020-12-08 11:52 ` Borislav Petkov
2020-12-09 1:36 ` Shuo A Liu
2020-12-01 9:38 ` shuo.a.liu [this message]
2020-12-01 9:38 ` [PATCH v6 03/18] x86/acrn: Introduce acrn_cpuid_base() and hypervisor feature bits shuo.a.liu
2020-12-01 9:38 ` [PATCH v6 04/18] x86/acrn: Introduce hypercall interfaces shuo.a.liu
2020-12-30 17:33 ` Borislav Petkov
2021-01-06 7:52 ` Shuo A Liu
2020-12-01 9:38 ` [PATCH v6 05/18] virt: acrn: Introduce ACRN HSM basic driver shuo.a.liu
2020-12-01 9:38 ` [PATCH v6 06/18] virt: acrn: Introduce VM management interfaces shuo.a.liu
2020-12-01 10:09 ` Greg Kroah-Hartman
2020-12-02 2:14 ` Shuo A Liu
2020-12-15 9:52 ` Shuo A Liu
2020-12-15 10:00 ` Greg Kroah-Hartman
2020-12-15 10:02 ` Shuo A Liu
2021-01-05 14:03 ` Greg Kroah-Hartman
2021-01-06 7:56 ` Shuo A Liu
2020-12-01 9:38 ` [PATCH v6 07/18] virt: acrn: Introduce an ioctl to set vCPU registers state shuo.a.liu
2020-12-01 9:38 ` [PATCH v6 08/18] virt: acrn: Introduce EPT mapping management shuo.a.liu
2020-12-01 9:38 ` [PATCH v6 09/18] virt: acrn: Introduce I/O request management shuo.a.liu
2020-12-01 9:38 ` [PATCH v6 10/18] virt: acrn: Introduce PCI configuration space PIO accesses combiner shuo.a.liu
2020-12-01 9:38 ` [PATCH v6 11/18] virt: acrn: Introduce interfaces for PCI device passthrough shuo.a.liu
2020-12-01 9:38 ` [PATCH v6 12/18] virt: acrn: Introduce interrupt injection interfaces shuo.a.liu
2020-12-01 9:38 ` [PATCH v6 13/18] virt: acrn: Introduce interfaces to query C-states and P-states allowed by hypervisor shuo.a.liu
2020-12-01 9:38 ` [PATCH v6 14/18] virt: acrn: Introduce I/O ranges operation interfaces shuo.a.liu
2020-12-01 9:38 ` [PATCH v6 15/18] virt: acrn: Introduce ioeventfd shuo.a.liu
2020-12-01 9:38 ` [PATCH v6 16/18] virt: acrn: Introduce irqfd shuo.a.liu
2020-12-01 9:38 ` [PATCH v6 17/18] virt: acrn: Introduce an interface for Service VM to control vCPU shuo.a.liu
2020-12-01 9:38 ` [PATCH v6 18/18] sample/acrn: Introduce a sample of HSM ioctl interface usage shuo.a.liu
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