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| author |   Heiko Carstens <heiko.carstens@de.ibm.com> | 2015-02-12 13:08:27 +0100 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-03-25 11:49:33 +0100 |
| commit | 5a79859ae0f35d25c67a03e82bf0c80592f16a39 (patch) | |
| tree | 37264d49f069812f19ced94e6ae171814fb7e498 /drivers/s390/cio | |
| parent | s390/smp: reenable smt after resume (diff) | |
| download | linux-dev-5a79859ae0f35d25c67a03e82bf0c80592f16a39.tar.xz linux-dev-5a79859ae0f35d25c67a03e82bf0c80592f16a39.zip | |
s390: remove 31 bit support
Remove the 31 bit support in order to reduce maintenance cost and
effectively remove dead code. Since a couple of years there is no
distribution left that comes with a 31 bit kernel.
The 31 bit kernel also has been broken since more than a year before
anybody noticed. In addition I added a removal warning to the kernel
shown at ipl for 5 minutes: a960062e5826 ("s390: add 31 bit warning
message") which let everybody know about the plan to remove 31 bit
code. We didn't get any response.
Given that the last 31 bit only machine was introduced in 1999 let's
remove the code.
Anybody with 31 bit user space code can still use the compat mode.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio')
| -rw-r--r-- | drivers/s390/cio/cio.c | 2 | ||||
| -rw-r--r-- | drivers/s390/cio/qdio.h | 7 | ||||
| -rw-r--r-- | drivers/s390/cio/qdio_setup.c | 3 |
3 files changed, 0 insertions, 12 deletions
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c index 3578105989a0..07fc5d9e7f10 100644 --- a/drivers/s390/cio/cio.c +++ b/drivers/s390/cio/cio.c @@ -143,13 +143,11 @@ cio_start_key (struct subchannel *sch, /* subchannel structure */ orb->cmd.spnd = priv->options.suspend; orb->cmd.ssic = priv->options.suspend && priv->options.inter; orb->cmd.lpm = (lpm != 0) ? lpm : sch->lpm; -#ifdef CONFIG_64BIT /* * for 64 bit we always support 64 bit IDAWs with 4k page size only */ orb->cmd.c64 = 1; orb->cmd.i2k = 0; -#endif orb->cmd.key = key >> 4; /* issue "Start Subchannel" */ orb->cmd.cpa = (__u32) __pa(cpa); diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h index a563e4c00590..7e70f9298cc1 100644 --- a/drivers/s390/cio/qdio.h +++ b/drivers/s390/cio/qdio.h @@ -84,7 +84,6 @@ enum qdio_irq_states { #define QDIO_SIGA_WRITEQ 0x04 #define QDIO_SIGA_QEBSM_FLAG 0x80 -#ifdef CONFIG_64BIT static inline int do_sqbs(u64 token, unsigned char state, int queue, int *start, int *count) { @@ -122,12 +121,6 @@ static inline int do_eqbs(u64 token, unsigned char *state, int queue, return (_ccq >> 32) & 0xff; } -#else -static inline int do_sqbs(u64 token, unsigned char state, int queue, - int *start, int *count) { return 0; } -static inline int do_eqbs(u64 token, unsigned char *state, int queue, - int *start, int *count, int ack) { return 0; } -#endif /* CONFIG_64BIT */ struct qdio_irq; diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c index f76bff68d1de..48b3866a9ded 100644 --- a/drivers/s390/cio/qdio_setup.c +++ b/drivers/s390/cio/qdio_setup.c @@ -91,10 +91,7 @@ EXPORT_SYMBOL_GPL(qdio_reset_buffers); */ static inline int qebsm_possible(void) { -#ifdef CONFIG_64BIT return css_general_characteristics.qebsm; -#endif - return 0; } /* |