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authorBenjamin Block <bblock@linux.ibm.com>2023-08-17 20:18:13 +0300
committerHeiko Carstens <hca@linux.ibm.com>2023-08-30 12:03:28 +0300
commitacf00b5ef9f83069ddbea274ab32931f8573e98b (patch)
treea7fb9dedb681ea2d449dd401b0405443abf06872 /arch/s390/kvm
parenta7eb28801b692df2496e21ff9af6ab0dc1969133 (diff)
downloadlinux-acf00b5ef9f83069ddbea274ab32931f8573e98b.tar.xz
s390/airq: remove lsi_mask from airq_struct
Remove the field `lsi_mask` from `struct airq_struct` as it is not utilized for any adapter interrupt, other than setting it to the default value of 0xff. Because nobody is using this functionality, all it does is cost a little bit of time with each delivered adapter interrupt. Reviewed-by: Michael Mueller <mimu@linux.ibm.com> Tested-by: Michael Mueller <mimu@linux.ibm.com> Acked-by: Peter Oberparleiter <oberpar@linux.ibm.com> Signed-off-by: Benjamin Block <bblock@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390/kvm')
-rw-r--r--arch/s390/kvm/interrupt.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index 9bd0a873f3b1..6fa6a4b0b9a8 100644
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -3398,7 +3398,6 @@ static void gib_alert_irq_handler(struct airq_struct *airq,
static struct airq_struct gib_alert_irq = {
.handler = gib_alert_irq_handler,
- .lsi_ptr = &gib_alert_irq.lsi_mask,
};
void kvm_s390_gib_destroy(void)
@@ -3438,6 +3437,8 @@ int __init kvm_s390_gib_init(u8 nisc)
rc = -EIO;
goto out_free_gib;
}
+ /* adapter interrupts used for AP (applicable here) don't use the LSI */
+ *gib_alert_irq.lsi_ptr = 0xff;
gib->nisc = nisc;
gib_origin = virt_to_phys(gib);