diff options
| author | Benjamin Block <bblock@linux.ibm.com> | 2023-08-17 19:18:13 +0200 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2023-08-30 11:03:28 +0200 |
| commit | acf00b5ef9f83069ddbea274ab32931f8573e98b (patch) | |
| tree | a7fb9dedb681ea2d449dd401b0405443abf06872 /arch/s390 | |
| parent | a7eb28801b692df2496e21ff9af6ab0dc1969133 (diff) | |
| download | lwn-acf00b5ef9f83069ddbea274ab32931f8573e98b.tar.gz lwn-acf00b5ef9f83069ddbea274ab32931f8573e98b.zip | |
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')
| -rw-r--r-- | arch/s390/include/asm/airq.h | 1 | ||||
| -rw-r--r-- | arch/s390/kvm/interrupt.c | 3 |
2 files changed, 2 insertions, 2 deletions
diff --git a/arch/s390/include/asm/airq.h b/arch/s390/include/asm/airq.h index e82e5626e139..c4c28c2609a5 100644 --- a/arch/s390/include/asm/airq.h +++ b/arch/s390/include/asm/airq.h @@ -18,7 +18,6 @@ struct airq_struct { struct hlist_node list; /* Handler queueing. */ void (*handler)(struct airq_struct *airq, struct tpi_info *tpi_info); u8 *lsi_ptr; /* Local-Summary-Indicator pointer */ - u8 lsi_mask; /* Local-Summary-Indicator mask */ u8 isc; /* Interrupt-subclass */ u8 flags; }; 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); |