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authorHeiko Carstens <heiko.carstens@de.ibm.com>2015-02-12 13:08:27 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2015-03-25 11:49:33 +0100
commit5a79859ae0f35d25c67a03e82bf0c80592f16a39 (patch)
tree37264d49f069812f19ced94e6ae171814fb7e498 /drivers/s390/char
parent1833c9f647e9bda1cd24653ff8f9c207b5f5b911 (diff)
downloadlinux-5a79859ae0f35d25c67a03e82bf0c80592f16a39.tar.bz2
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/char')
-rw-r--r--drivers/s390/char/Kconfig2
-rw-r--r--drivers/s390/char/sclp_sdias.c4
-rw-r--r--drivers/s390/char/zcore.c32
3 files changed, 1 insertions, 37 deletions
diff --git a/drivers/s390/char/Kconfig b/drivers/s390/char/Kconfig
index a5c6f7e157aa..eaca3e006301 100644
--- a/drivers/s390/char/Kconfig
+++ b/drivers/s390/char/Kconfig
@@ -115,7 +115,7 @@ config SCLP_ASYNC_ID
config HMC_DRV
def_tristate m
prompt "Support for file transfers from HMC drive CD/DVD-ROM"
- depends on S390 && 64BIT
+ depends on S390
select CRC16
help
This option enables support for file transfers from a Hardware
diff --git a/drivers/s390/char/sclp_sdias.c b/drivers/s390/char/sclp_sdias.c
index 561a0414b352..eb7cb076c001 100644
--- a/drivers/s390/char/sclp_sdias.c
+++ b/drivers/s390/char/sclp_sdias.c
@@ -178,11 +178,7 @@ int sclp_sdias_copy(void *dest, int start_blk, int nr_blks)
sccb.evbuf.event_qual = SDIAS_EQ_STORE_DATA;
sccb.evbuf.data_id = SDIAS_DI_FCP_DUMP;
sccb.evbuf.event_id = 4712;
-#ifdef CONFIG_64BIT
sccb.evbuf.asa_size = SDIAS_ASA_SIZE_64;
-#else
- sccb.evbuf.asa_size = SDIAS_ASA_SIZE_32;
-#endif
sccb.evbuf.event_status = 0;
sccb.evbuf.blk_cnt = nr_blks;
sccb.evbuf.asa = (unsigned long)dest;
diff --git a/drivers/s390/char/zcore.c b/drivers/s390/char/zcore.c
index efcf48481c5f..a68fcfd1d48c 100644
--- a/drivers/s390/char/zcore.c
+++ b/drivers/s390/char/zcore.c
@@ -212,11 +212,7 @@ static struct zcore_header zcore_header = {
.dump_level = 0,
.page_size = PAGE_SIZE,
.mem_start = 0,
-#ifdef CONFIG_64BIT
.build_arch = DUMP_ARCH_S390X,
-#else
- .build_arch = DUMP_ARCH_S390,
-#endif
};
/*
@@ -516,23 +512,6 @@ static const struct file_operations zcore_hsa_fops = {
.llseek = no_llseek,
};
-#ifdef CONFIG_32BIT
-
-static void __init set_lc_mask(struct save_area *map)
-{
- memset(&map->ext_save, 0xff, sizeof(map->ext_save));
- memset(&map->timer, 0xff, sizeof(map->timer));
- memset(&map->clk_cmp, 0xff, sizeof(map->clk_cmp));
- memset(&map->psw, 0xff, sizeof(map->psw));
- memset(&map->pref_reg, 0xff, sizeof(map->pref_reg));
- memset(&map->acc_regs, 0xff, sizeof(map->acc_regs));
- memset(&map->fp_regs, 0xff, sizeof(map->fp_regs));
- memset(&map->gp_regs, 0xff, sizeof(map->gp_regs));
- memset(&map->ctrl_regs, 0xff, sizeof(map->ctrl_regs));
-}
-
-#else /* CONFIG_32BIT */
-
static void __init set_lc_mask(struct save_area *map)
{
memset(&map->fp_regs, 0xff, sizeof(map->fp_regs));
@@ -547,8 +526,6 @@ static void __init set_lc_mask(struct save_area *map)
memset(&map->ctrl_regs, 0xff, sizeof(map->ctrl_regs));
}
-#endif /* CONFIG_32BIT */
-
/*
* Initialize dump globals for a given architecture
*/
@@ -688,21 +665,12 @@ static int __init zcore_init(void)
if (rc)
goto fail;
-#ifdef CONFIG_64BIT
if (arch == ARCH_S390) {
pr_alert("The 64-bit dump tool cannot be used for a "
"32-bit system\n");
rc = -EINVAL;
goto fail;
}
-#else /* CONFIG_64BIT */
- if (arch == ARCH_S390X) {
- pr_alert("The 32-bit dump tool cannot be used for a "
- "64-bit system\n");
- rc = -EINVAL;
- goto fail;
- }
-#endif /* CONFIG_64BIT */
rc = get_mem_info(&mem_size, &mem_end);
if (rc)