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| author |   Peter Zijlstra <peterz@infradead.org> | 2021-11-10 11:01:22 +0100 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2021-12-11 09:09:50 +0100 |
| commit | d5d797dcbd781cb7c526ad32f31c7fd96babfdb2 (patch) | |
| tree | dd64239b122e8ab932f750b121d88bdacbff9120 /lib/test_overflow.c | |
| parent | x86/usercopy_32: Simplify __copy_user_intel_nocache() (diff) | |
| download | linux-dev-d5d797dcbd781cb7c526ad32f31c7fd96babfdb2.tar.xz linux-dev-d5d797dcbd781cb7c526ad32f31c7fd96babfdb2.zip | |
x86/usercopy: Remove .fixup usage
Typically usercopy does whole word copies followed by a number of byte
copies to finish the tail. This means that on exception it needs to
compute the remaining length as: words*sizeof(long) + bytes.
Create a new extable handler to do just this.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/r/20211110101326.081701085@infradead.org
Diffstat (limited to 'lib/test_overflow.c')
0 files changed, 0 insertions, 0 deletions