diff options
author | Anton Blanchard <anton@samba.org> | 2013-11-20 11:14:59 (GMT) |
---|---|---|
committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-11-20 22:19:16 (GMT) |
commit | e844b1eeae42dc93bf13e67812a95ee7b58be8c7 (patch) | |
tree | 7c36d37d883ed5ec6b386277c38e20d9485fdaca /arch/powerpc/include/asm/plpar_wrappers.h | |
parent | b91da2d4ce896c324bdbf1a078dbbe2db9a35ef1 (diff) | |
download | linux-fsl-qoriq-e844b1eeae42dc93bf13e67812a95ee7b58be8c7.tar.xz |
pseries: Add H_SET_MODE to change exception endianness
On little endian builds call H_SET_MODE so exceptions have the
correct endianness. We need to reset the endian during kexec
so do that in the MMU hashtable clear callback.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/plpar_wrappers.h')
-rw-r--r-- | arch/powerpc/include/asm/plpar_wrappers.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/plpar_wrappers.h b/arch/powerpc/include/asm/plpar_wrappers.h index a63b045..12c32c5 100644 --- a/arch/powerpc/include/asm/plpar_wrappers.h +++ b/arch/powerpc/include/asm/plpar_wrappers.h @@ -287,6 +287,32 @@ static inline long disable_reloc_on_exceptions(void) { return plpar_set_mode(0, 3, 0, 0); } +/* + * Take exceptions in big endian mode on this partition + * + * Note: this call has a partition wide scope and can take a while to complete. + * If it returns H_LONG_BUSY_* it should be retried periodically until it + * returns H_SUCCESS. + */ +static inline long enable_big_endian_exceptions(void) +{ + /* mflags = 0: big endian exceptions */ + return plpar_set_mode(0, 4, 0, 0); +} + +/* + * Take exceptions in little endian mode on this partition + * + * Note: this call has a partition wide scope and can take a while to complete. + * If it returns H_LONG_BUSY_* it should be retried periodically until it + * returns H_SUCCESS. + */ +static inline long enable_little_endian_exceptions(void) +{ + /* mflags = 1: little endian exceptions */ + return plpar_set_mode(1, 4, 0, 0); +} + static inline long plapr_set_ciabr(unsigned long ciabr) { return plpar_set_mode(0, 1, ciabr, 0); |