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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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736706bee3
Every in-kernel use of this function defined it to KERNEL_DS (either as an actual define, or as an inline function). It's an entirely historical artifact, and long long long ago used to actually read the segment selector valueof '%ds' on x86. Which in the kernel is always KERNEL_DS. Inspired by a patch from Jann Horn that just did this for a very small subset of users (the ones in fs/), along with Al who suggested a script. I then just took it to the logical extreme and removed all the remaining gunk. Roughly scripted with git grep -l '(get_ds())' -- :^tools/ | xargs sed -i 's/(get_ds())/(KERNEL_DS)/' git grep -lw 'get_ds' -- :^tools/ | xargs sed -i '/^#define get_ds()/d' plus manual fixups to remove a few unusual usage patterns, the couple of inline function cases and to fix up a comment that had become stale. The 'get_ds()' function remains in an x86 kvm selftest, since in user space it actually does something relevant. Inspired-by: Jann Horn <jannh@google.com> Inspired-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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.. | ||
addrspace.h | ||
atomic.h | ||
barrier.h | ||
bitops.h | ||
bug.h | ||
cache.h | ||
cacheflush.h | ||
checksum.h | ||
cmpxchg.h | ||
elf.h | ||
fixmap.h | ||
ftrace.h | ||
highmem.h | ||
io.h | ||
irqflags.h | ||
Kbuild | ||
mmu_context.h | ||
mmu.h | ||
page.h | ||
perf_event.h | ||
pgalloc.h | ||
pgtable.h | ||
processor.h | ||
reg_ops.h | ||
segment.h | ||
shmparam.h | ||
smp.h | ||
spinlock_types.h | ||
spinlock.h | ||
string.h | ||
switch_to.h | ||
syscall.h | ||
syscalls.h | ||
thread_info.h | ||
tlb.h | ||
tlbflush.h | ||
traps.h | ||
uaccess.h | ||
unistd.h | ||
vdso.h |