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author | Herbert Xu <herbert@gondor.apana.org.au> | 2017-01-12 16:10:00 +0800 |
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committer | Herbert Xu <herbert@gondor.apana.org.au> | 2017-01-12 16:10:00 +0800 |
commit | 4cf0662888026d5c1b62ed3fa8dc048a2ff2e124 (patch) | |
tree | a5c92c5024c599a00bfd8d402d2b7b0a619b0259 /arch/arm64/include/asm/uaccess.h | |
parent | c821f6ab2e47946f35ee2f30781c5185e5d07f65 (diff) | |
parent | a121103c922847ba5010819a3f250f1f7fc84ab8 (diff) | |
download | op-kernel-dev-4cf0662888026d5c1b62ed3fa8dc048a2ff2e124.zip op-kernel-dev-4cf0662888026d5c1b62ed3fa8dc048a2ff2e124.tar.gz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
Merging 4.10-rc3 so that the cryptodev tree builds on ARM64.
Diffstat (limited to 'arch/arm64/include/asm/uaccess.h')
-rw-r--r-- | arch/arm64/include/asm/uaccess.h | 64 |
1 files changed, 0 insertions, 64 deletions
diff --git a/arch/arm64/include/asm/uaccess.h b/arch/arm64/include/asm/uaccess.h index d26750c..46da3ea 100644 --- a/arch/arm64/include/asm/uaccess.h +++ b/arch/arm64/include/asm/uaccess.h @@ -22,8 +22,6 @@ #include <asm/kernel-pgtable.h> #include <asm/sysreg.h> -#ifndef __ASSEMBLY__ - /* * User space memory access functions */ @@ -424,66 +422,4 @@ extern long strncpy_from_user(char *dest, const char __user *src, long count); extern __must_check long strlen_user(const char __user *str); extern __must_check long strnlen_user(const char __user *str, long n); -#else /* __ASSEMBLY__ */ - -#include <asm/assembler.h> - -/* - * User access enabling/disabling macros. - */ -#ifdef CONFIG_ARM64_SW_TTBR0_PAN - .macro __uaccess_ttbr0_disable, tmp1 - mrs \tmp1, ttbr1_el1 // swapper_pg_dir - add \tmp1, \tmp1, #SWAPPER_DIR_SIZE // reserved_ttbr0 at the end of swapper_pg_dir - msr ttbr0_el1, \tmp1 // set reserved TTBR0_EL1 - isb - .endm - - .macro __uaccess_ttbr0_enable, tmp1 - get_thread_info \tmp1 - ldr \tmp1, [\tmp1, #TSK_TI_TTBR0] // load saved TTBR0_EL1 - msr ttbr0_el1, \tmp1 // set the non-PAN TTBR0_EL1 - isb - .endm - - .macro uaccess_ttbr0_disable, tmp1 -alternative_if_not ARM64_HAS_PAN - __uaccess_ttbr0_disable \tmp1 -alternative_else_nop_endif - .endm - - .macro uaccess_ttbr0_enable, tmp1, tmp2 -alternative_if_not ARM64_HAS_PAN - save_and_disable_irq \tmp2 // avoid preemption - __uaccess_ttbr0_enable \tmp1 - restore_irq \tmp2 -alternative_else_nop_endif - .endm -#else - .macro uaccess_ttbr0_disable, tmp1 - .endm - - .macro uaccess_ttbr0_enable, tmp1, tmp2 - .endm -#endif - -/* - * These macros are no-ops when UAO is present. - */ - .macro uaccess_disable_not_uao, tmp1 - uaccess_ttbr0_disable \tmp1 -alternative_if ARM64_ALT_PAN_NOT_UAO - SET_PSTATE_PAN(1) -alternative_else_nop_endif - .endm - - .macro uaccess_enable_not_uao, tmp1, tmp2 - uaccess_ttbr0_enable \tmp1, \tmp2 -alternative_if ARM64_ALT_PAN_NOT_UAO - SET_PSTATE_PAN(0) -alternative_else_nop_endif - .endm - -#endif /* __ASSEMBLY__ */ - #endif /* __ASM_UACCESS_H */ |