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-rw-r--r--arch/s390/include/asm/lowcore.h13
-rw-r--r--arch/s390/kernel/asm-offsets.c1
-rw-r--r--drivers/s390/cio/ccwreq.c2
-rw-r--r--drivers/s390/cio/chsc_sch.c2
-rw-r--r--drivers/s390/cio/cio.c9
-rw-r--r--drivers/s390/cio/cio.h2
-rw-r--r--drivers/s390/cio/device_fsm.c4
-rw-r--r--drivers/s390/cio/eadm_sch.c2
8 files changed, 16 insertions, 19 deletions
diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h
index a406f24737cd..2070cad80e9e 100644
--- a/arch/s390/include/asm/lowcore.h
+++ b/arch/s390/include/asm/lowcore.h
@@ -143,10 +143,7 @@ struct _lowcore {
__u32 ftrace_func; /* 0x02f8 */
__u32 spinlock_lockval; /* 0x02fc */
- /* Interrupt response block */
- __u8 irb[96]; /* 0x0300 */
-
- __u8 pad_0x0360[0x0e00-0x0360]; /* 0x0360 */
+ __u8 pad_0x0300[0x0e00-0x0300]; /* 0x0300 */
/*
* 0xe00 contains the address of the IPL Parameter Information
@@ -292,14 +289,10 @@ struct _lowcore {
__u32 spinlock_lockval; /* 0x03a0 */
__u8 pad_0x03a0[0x0400-0x03a4]; /* 0x03a4 */
- /* Interrupt response block. */
- __u8 irb[96]; /* 0x0400 */
- __u8 pad_0x0460[0x0480-0x0460]; /* 0x0460 */
-
/* Per cpu primary space access list */
- __u32 paste[16]; /* 0x0480 */
+ __u32 paste[16]; /* 0x0400 */
- __u8 pad_0x04c0[0x0e00-0x04c0]; /* 0x04c0 */
+ __u8 pad_0x04c0[0x0e00-0x0440]; /* 0x0440 */
/*
* 0xe00 contains the address of the IPL Parameter Information
diff --git a/arch/s390/kernel/asm-offsets.c b/arch/s390/kernel/asm-offsets.c
index 76c4e2f70cab..0c070c44cde2 100644
--- a/arch/s390/kernel/asm-offsets.c
+++ b/arch/s390/kernel/asm-offsets.c
@@ -144,7 +144,6 @@ int main(void)
DEFINE(__LC_MCCK_CLOCK, offsetof(struct _lowcore, mcck_clock));
DEFINE(__LC_MACHINE_FLAGS, offsetof(struct _lowcore, machine_flags));
DEFINE(__LC_FTRACE_FUNC, offsetof(struct _lowcore, ftrace_func));
- DEFINE(__LC_IRB, offsetof(struct _lowcore, irb));
DEFINE(__LC_DUMP_REIPL, offsetof(struct _lowcore, ipib));
BLANK();
DEFINE(__LC_CPU_TIMER_SAVE_AREA, offsetof(struct _lowcore, cpu_timer_save_area));
diff --git a/drivers/s390/cio/ccwreq.c b/drivers/s390/cio/ccwreq.c
index fc5fb51d9bce..07676c22d514 100644
--- a/drivers/s390/cio/ccwreq.c
+++ b/drivers/s390/cio/ccwreq.c
@@ -252,7 +252,7 @@ static void ccwreq_log_status(struct ccw_device *cdev, enum io_status status)
*/
void ccw_request_handler(struct ccw_device *cdev)
{
- struct irb *irb = (struct irb *)&S390_lowcore.irb;
+ struct irb *irb = &__get_cpu_var(cio_irb);
struct ccw_request *req = &cdev->private->req;
enum io_status status;
int rc = -EOPNOTSUPP;
diff --git a/drivers/s390/cio/chsc_sch.c b/drivers/s390/cio/chsc_sch.c
index 1d3661af7bd8..3d22d2a4ce14 100644
--- a/drivers/s390/cio/chsc_sch.c
+++ b/drivers/s390/cio/chsc_sch.c
@@ -58,7 +58,7 @@ static void chsc_subchannel_irq(struct subchannel *sch)
{
struct chsc_private *private = dev_get_drvdata(&sch->dev);
struct chsc_request *request = private->request;
- struct irb *irb = (struct irb *)&S390_lowcore.irb;
+ struct irb *irb = &__get_cpu_var(cio_irb);
CHSC_LOG(4, "irb");
CHSC_LOG_HEX(4, irb, sizeof(*irb));
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index 9e058c4657a3..77f9c92df4b9 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -46,6 +46,9 @@ debug_info_t *cio_debug_msg_id;
debug_info_t *cio_debug_trace_id;
debug_info_t *cio_debug_crw_id;
+DEFINE_PER_CPU_ALIGNED(struct irb, cio_irb);
+EXPORT_PER_CPU_SYMBOL(cio_irb);
+
/*
* Function: cio_debug_init
* Initializes three debug logs for common I/O:
@@ -560,7 +563,7 @@ static irqreturn_t do_cio_interrupt(int irq, void *dummy)
__this_cpu_write(s390_idle.nohz_delay, 1);
tpi_info = (struct tpi_info *) &get_irq_regs()->int_code;
- irb = (struct irb *) &S390_lowcore.irb;
+ irb = &__get_cpu_var(cio_irb);
sch = (struct subchannel *)(unsigned long) tpi_info->intparm;
if (!sch) {
/* Clear pending interrupt condition. */
@@ -609,7 +612,7 @@ void cio_tsch(struct subchannel *sch)
struct irb *irb;
int irq_context;
- irb = (struct irb *)&S390_lowcore.irb;
+ irb = &__get_cpu_var(cio_irb);
/* Store interrupt response block to lowcore. */
if (tsch(sch->schid, irb) != 0)
/* Not status pending or not operational. */
@@ -746,7 +749,7 @@ __clear_io_subchannel_easy(struct subchannel_id schid)
struct tpi_info ti;
if (tpi(&ti)) {
- tsch(ti.schid, (struct irb *)&S390_lowcore.irb);
+ tsch(ti.schid, &__get_cpu_var(cio_irb));
if (schid_equal(&ti.schid, &schid))
return 0;
}
diff --git a/drivers/s390/cio/cio.h b/drivers/s390/cio/cio.h
index d42f67412bd8..a01376ae1749 100644
--- a/drivers/s390/cio/cio.h
+++ b/drivers/s390/cio/cio.h
@@ -102,6 +102,8 @@ struct subchannel {
struct schib_config config;
} __attribute__ ((aligned(8)));
+DECLARE_PER_CPU(struct irb, cio_irb);
+
#define to_subchannel(n) container_of(n, struct subchannel, dev)
extern int cio_validate_subchannel (struct subchannel *, struct subchannel_id);
diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c
index c7638c543250..0bc902b3cd84 100644
--- a/drivers/s390/cio/device_fsm.c
+++ b/drivers/s390/cio/device_fsm.c
@@ -739,7 +739,7 @@ ccw_device_irq(struct ccw_device *cdev, enum dev_event dev_event)
struct irb *irb;
int is_cmd;
- irb = (struct irb *)&S390_lowcore.irb;
+ irb = &__get_cpu_var(cio_irb);
is_cmd = !scsw_is_tm(&irb->scsw);
/* Check for unsolicited interrupt. */
if (!scsw_is_solicited(&irb->scsw)) {
@@ -805,7 +805,7 @@ ccw_device_w4sense(struct ccw_device *cdev, enum dev_event dev_event)
{
struct irb *irb;
- irb = (struct irb *)&S390_lowcore.irb;
+ irb = &__get_cpu_var(cio_irb);
/* Check for unsolicited interrupt. */
if (scsw_stctl(&irb->scsw) ==
(SCSW_STCTL_STATUS_PEND | SCSW_STCTL_ALERT_STATUS)) {
diff --git a/drivers/s390/cio/eadm_sch.c b/drivers/s390/cio/eadm_sch.c
index 3a2ee4a740b4..c4f7bf3e24c2 100644
--- a/drivers/s390/cio/eadm_sch.c
+++ b/drivers/s390/cio/eadm_sch.c
@@ -134,7 +134,7 @@ static void eadm_subchannel_irq(struct subchannel *sch)
{
struct eadm_private *private = get_eadm_private(sch);
struct eadm_scsw *scsw = &sch->schib.scsw.eadm;
- struct irb *irb = (struct irb *)&S390_lowcore.irb;
+ struct irb *irb = &__get_cpu_var(cio_irb);
int error = 0;
EADM_LOG(6, "irq");
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-30 19:49:43 +0000