diff mbox series

[10/15] x86: hyperv: Add mshv_handler irq handler and setup function

Message ID 1690487690-2428-11-git-send-email-nunodasneves@linux.microsoft.com (mailing list archive)
State New, archived
Headers show
Series Introduce /dev/mshv drivers | expand

Commit Message

Nuno Das Neves July 27, 2023, 7:54 p.m. UTC 
This will handle SYNIC interrupts such as intercepts, doorbells, and
scheduling messages intended for the mshv driver.

Signed-off-by: Nuno Das Neves <nunodasneves@linux.microsoft.com>
---
 arch/x86/kernel/cpu/mshyperv.c | 9 +++++++++
 drivers/hv/hv_common.c         | 5 +++++
 include/asm-generic/mshyperv.h | 2 ++
 3 files changed, 16 insertions(+)

Comments

Wei Liu Aug. 3, 2023, 12:17 a.m. UTC | #1 
On Thu, Jul 27, 2023 at 12:54:45PM -0700, Nuno Das Neves wrote:
> This will handle SYNIC interrupts such as intercepts, doorbells, and
> scheduling messages intended for the mshv driver.
> 
> Signed-off-by: Nuno Das Neves <nunodasneves@linux.microsoft.com>

Reviewed-by: Wei Liu <wei.liu@kernel.org>
diff mbox series

Patch

diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c
index e44291e902ae..442d00fe70f1 100644
--- a/arch/x86/kernel/cpu/mshyperv.c
+++ b/arch/x86/kernel/cpu/mshyperv.c
@@ -105,6 +105,7 @@  void hv_set_register(unsigned int reg, u64 value)
 }
 EXPORT_SYMBOL_GPL(hv_set_register);
 
+static void (*mshv_handler)(void);
 static void (*vmbus_handler)(void);
 static void (*hv_stimer0_handler)(void);
 static void (*hv_kexec_handler)(void);
@@ -115,6 +116,9 @@  DEFINE_IDTENTRY_SYSVEC(sysvec_hyperv_callback)
 	struct pt_regs *old_regs = set_irq_regs(regs);
 
 	inc_irq_stat(irq_hv_callback_count);
+	if (mshv_handler)
+		mshv_handler();
+
 	if (vmbus_handler)
 		vmbus_handler();
 
@@ -139,6 +143,11 @@  DEFINE_IDTENTRY_SYSVEC(sysvec_hyperv_nested_vmbus_intr)
 	set_irq_regs(old_regs);
 }
 
+void hv_setup_mshv_irq(void (*handler)(void))
+{
+	mshv_handler = handler;
+}
+
 void hv_setup_vmbus_handler(void (*handler)(void))
 {
 	vmbus_handler = handler;
diff --git a/drivers/hv/hv_common.c b/drivers/hv/hv_common.c
index 16f069beda78..678a3f2e1dc1 100644
--- a/drivers/hv/hv_common.c
+++ b/drivers/hv/hv_common.c
@@ -557,6 +557,11 @@  void __weak hv_remove_vmbus_handler(void)
 }
 EXPORT_SYMBOL_GPL(hv_remove_vmbus_handler);
 
+void __weak hv_setup_mshv_irq(void (*handler)(void))
+{
+}
+EXPORT_SYMBOL_GPL(hv_setup_mshv_irq);
+
 void __weak hv_setup_kexec_handler(void (*handler)(void))
 {
 }
diff --git a/include/asm-generic/mshyperv.h b/include/asm-generic/mshyperv.h
index 9118d678b27a..2b20994d809e 100644
--- a/include/asm-generic/mshyperv.h
+++ b/include/asm-generic/mshyperv.h
@@ -193,6 +193,8 @@  void hv_remove_vmbus_handler(void);
 void hv_setup_stimer0_handler(void (*handler)(void));
 void hv_remove_stimer0_handler(void);
 
+void hv_setup_mshv_irq(void (*handler)(void));
+
 void hv_setup_kexec_handler(void (*handler)(void));
 void hv_remove_kexec_handler(void);
 void hv_setup_crash_handler(void (*handler)(struct pt_regs *regs));