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From: Janosch Frank <frankja@linux.ibm.com>
To: kvm@vger.kernel.org
Cc: thuth@redhat.com, linux-s390@vger.kernel.org, david@redhat.com,
	borntraeger@de.ibm.com, cohuck@redhat.com,
	imbrenda@linux.ibm.com
Subject: [kvm-unit-tests PATCH v2 1/3] s390x: Add custom pgm cleanup function
Date: Mon, 27 Jul 2020 05:54:13 -0400
Message-ID: <20200727095415.494318-2-frankja@linux.ibm.com> (raw)
In-Reply-To: <20200727095415.494318-1-frankja@linux.ibm.com>

Sometimes we need to do cleanup which we don't necessarily want to add
to interrupt.c, so lets add a way to register a cleanup function.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
---
 lib/s390x/asm/interrupt.h |  1 +
 lib/s390x/interrupt.c     | 10 ++++++++++
 2 files changed, 11 insertions(+)

diff --git a/lib/s390x/asm/interrupt.h b/lib/s390x/asm/interrupt.h
index 4cfade9..b2a7c83 100644
--- a/lib/s390x/asm/interrupt.h
+++ b/lib/s390x/asm/interrupt.h
@@ -15,6 +15,7 @@
 #define EXT_IRQ_EXTERNAL_CALL	0x1202
 #define EXT_IRQ_SERVICE_SIG	0x2401
 
+void register_pgm_int_func(void (*f)(void));
 void handle_pgm_int(void);
 void handle_ext_int(void);
 void handle_mcck_int(void);
diff --git a/lib/s390x/interrupt.c b/lib/s390x/interrupt.c
index 243b9c2..51cc733 100644
--- a/lib/s390x/interrupt.c
+++ b/lib/s390x/interrupt.c
@@ -16,6 +16,7 @@
 
 static bool pgm_int_expected;
 static bool ext_int_expected;
+static void (*pgm_int_func)(void);
 static struct lowcore *lc;
 
 void expect_pgm_int(void)
@@ -51,6 +52,11 @@ void check_pgm_int_code(uint16_t code)
 	       lc->pgm_int_code);
 }
 
+void register_pgm_int_func(void (*f)(void))
+{
+	pgm_int_func = f;
+}
+
 static void fixup_pgm_int(void)
 {
 	switch (lc->pgm_int_code) {
@@ -115,6 +121,10 @@ void handle_pgm_int(void)
 	}
 
 	pgm_int_expected = false;
+
+	if (pgm_int_func)
+		return (*pgm_int_func)();
+
 	fixup_pgm_int();
 }
 
-- 
2.25.1


  reply index

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-27  9:54 [kvm-unit-tests PATCH v2 0/3] PV tests part 1 Janosch Frank
2020-07-27  9:54 ` Janosch Frank [this message]
2020-07-30 10:53   ` [kvm-unit-tests PATCH v2 1/3] s390x: Add custom pgm cleanup function Cornelia Huck
2020-07-27  9:54 ` [kvm-unit-tests PATCH v2 2/3] s390x: skrf: Add exception new skey test and add test to unittests.cfg Janosch Frank
2020-07-27 12:20   ` Thomas Huth
2020-07-27 12:38     ` Janosch Frank
2020-07-30 11:03   ` Cornelia Huck
2020-07-27  9:54 ` [kvm-unit-tests PATCH v2 3/3] s390x: Ultravisor guest API test Janosch Frank
2020-07-30 11:16   ` Cornelia Huck
2020-07-30 15:58     ` Thomas Huth
2020-07-31  7:34       ` Janosch Frank
2020-07-31  8:42         ` Cornelia Huck
2020-07-31  9:06           ` Janosch Frank
2020-07-31  9:21             ` Cornelia Huck
2020-08-07 11:15 [kvm-unit-tests PATCH v2 0/3] PV tests part 1 Janosch Frank
2020-08-07 11:15 ` [kvm-unit-tests PATCH v2 1/3] s390x: Add custom pgm cleanup function Janosch Frank
2020-08-10 12:21   ` Cornelia Huck

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