rhel7-kernel-misery/arch, branch master

mm: do not assume generic_max_swapfile_size exists

2020-11-04T09:03:00Z

For CONFIG_SWAP=n configurations, generic_max_swapfile_size is not compiled in, so conditionalize this statement. Signed-off-by: Jason A. Donenfeld

x86: clear smap in cr4 when not used

2020-09-30T14:46:02Z

If the CPU supports SMAP, but it isn't specified in the config, then we need to explicitly clear it from cr4. Otherwise the processor will trap on all normal userspace accesses, always, since the transition state isn't being set. Signed-off-by: Jason A. Donenfeld

x86: remove errant CFI usage from rwlock

2020-09-30T14:46:02Z

These don't assemble with newer binutils due to the use of the cfi directives, so simply remove them, since they're anyway just for debugging. Signed-off-by: Jason A. Donenfeld

spec_ctrl: don't dereference struct module without CONFIG_MODULE

2020-09-30T14:46:02Z

This structure isn't defined for !CONFIG_MODULE, so don't try to use it. Signed-off-by: Jason A. Donenfeld

x86: mark irq_set_vcpu_affinity stub as static

2020-09-30T14:46:02Z

Without marking this as static, the linker complaints about conflicts. Signed-off-by: Jason A. Donenfeld

x86: mshyperv: don't touch kexec symbols without CONFIG_KEXEC_CORE

2020-09-30T14:46:02Z

These symbols aren't defined without CONFIG_KEXEC_CORE, so factor it out of the expression in the case that CONFIG_KEXEC_CORE isn't defined. Signed-off-by: Jason A. Donenfeld

x86: kaiser_enabled isn't always defined

2020-09-30T14:46:02Z

This symbol only exists when CONFIG_PAGE_TABLE_ISOLATION is set, so don't use it otherwise. Signed-off-by: Jason A. Donenfeld

x86: fault: do not define trace function for !CONFIG_TRACING

2020-09-30T14:25:42Z

Do not define the page fault tracing function for !CONFIG_TRACING, when the header file has a static inline function to redirect it elsewhere. Having both results in a compiler error. Signed-off-by: Jason A. Donenfeld

x86: do not evaluate sometimes-undefined _PAGE_BIT_SWP_SOFT_DIRTY

2020-09-30T14:25:42Z

In certain configurations, _PAGE_BIT_SWP_SOFT_DIRTY is undefined, resulting in preprocessor warnings. Fix this by checking whether it's defined first. Signed-off-by: Jason A. Donenfeld

x86: pud_trans_huge is already defined generically for the nop inline

2020-09-30T14:25:42Z

When pud_trans_huge is not required, the stub function is already defined in the asm-generic code, so adding it here too results in a compiler error. To fix this bug, we just get rid of the second superfluous definition, as well as the third in asm-generic itself, where the set of conditions for its inclusion overlapped. Signed-off-by: Jason A. Donenfeld