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| author | Michael Holzheu <holzheu@de.ibm.com> | 2007-08-22 15:51:40 +0400 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2007-08-22 15:51:47 +0400 |
| commit | 0a87c5cfc0bb0c1bdcc1cc9fd82e4a1711fac512 (patch) | |
| tree | f204007f95e2807e63712593c3b42d3fb59be5fe /drivers/s390/cio/device_id.c | |
| parent | 37cd0a007f88f1d6269035bdb02b50f536cca8de (diff) | |
| download | linux-0a87c5cfc0bb0c1bdcc1cc9fd82e4a1711fac512.tar.xz | |
[S390] vmur: fix diag14 exceptions with addresses > 2GB.
There are several s390 diagnose calls, which must be executed below the
2GB memory boundary. In order to enforce this, those diagnoses must be
compiled into the kernel. Currently diag 14 can be called within the
vmur kernel module from addresses above 2GB. This leads to specification
exceptions. This patch moves diag10, diag14 and diag210 into the new
diag.c file.
Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/device_id.c')
| -rw-r--r-- | drivers/s390/cio/device_id.c | 48 |
1 files changed, 1 insertions, 47 deletions
diff --git a/drivers/s390/cio/device_id.c b/drivers/s390/cio/device_id.c index 60b9347f7c92..f232832f2b22 100644 --- a/drivers/s390/cio/device_id.c +++ b/drivers/s390/cio/device_id.c @@ -17,6 +17,7 @@ #include <asm/delay.h> #include <asm/cio.h> #include <asm/lowcore.h> +#include <asm/diag.h> #include "cio.h" #include "cio_debug.h" @@ -25,51 +26,6 @@ #include "ioasm.h" /* - * diag210 is used under VM to get information about a virtual device - */ -int -diag210(struct diag210 * addr) -{ - /* - * diag 210 needs its data below the 2GB border, so we - * use a static data area to be sure - */ - static struct diag210 diag210_tmp; - static DEFINE_SPINLOCK(diag210_lock); - unsigned long flags; - int ccode; - - spin_lock_irqsave(&diag210_lock, flags); - diag210_tmp = *addr; - -#ifdef CONFIG_64BIT - asm volatile( - " lhi %0,-1\n" - " sam31\n" - " diag %1,0,0x210\n" - "0: ipm %0\n" - " srl %0,28\n" - "1: sam64\n" - EX_TABLE(0b,1b) - : "=&d" (ccode) : "a" (&diag210_tmp) : "cc", "memory"); -#else - asm volatile( - " lhi %0,-1\n" - " diag %1,0,0x210\n" - "0: ipm %0\n" - " srl %0,28\n" - "1:\n" - EX_TABLE(0b,1b) - : "=&d" (ccode) : "a" (&diag210_tmp) : "cc", "memory"); -#endif - - *addr = diag210_tmp; - spin_unlock_irqrestore(&diag210_lock, flags); - - return ccode; -} - -/* * Input : * devno - device number * ps - pointer to sense ID data area @@ -349,5 +305,3 @@ ccw_device_sense_id_irq(struct ccw_device *cdev, enum dev_event dev_event) break; } } - -EXPORT_SYMBOL(diag210); |