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Intel Control-flow Enforcement Technology (CET):
https://software.intel.com/en-us/articles/intel-sdm
contains shadow stack (SHSTK) and indirect branch tracking (IBT).
When IBT is enabled, all indirect branch targets must start with
ENDBR instruction which is a NOP on non-CET processors.
Closes: https://gitlab.freedesktop.org/mesa/mesa/issues/2538
Acked-by: Matt Turner <[email protected]>
Reviewed-by: Dave Airlie <[email protected]>
Reviewed-by: Ben Widawsky <[email protected]>
Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3865>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3865>
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This saves one return and a simple benchmark which calls glGetString
repeatedly on my desktop shows it improves calls per second from 123M
to 141M.
Closes: https://gitlab.freedesktop.org/mesa/mesa/issues/1997
Reviewed-by: Matt Turner <[email protected]>
Signed-off-by: Lepton Wu <[email protected]>
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Remove hard coded 16 and use entry_generate_or_patch to patch
public stubs. The generated code actually is sightly tighter
than before since the "nop" instructions before the final "jmp"
get removed.
Reviewed-by: Matt Turner <[email protected]>
Signed-off-by: Lepton Wu <[email protected]>
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The code works exactly the same with before. Just split this function
out so we can reuse it.
Reviewed-by: Matt Turner <[email protected]>
Signed-off-by: Lepton Wu <[email protected]>
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This reverts commit e137b3a9b71a2711c1f68c8a8b9c0a7407fbcc4b. It
completely broke 32-bit EGL such that wflinfo can't even run without
crashing.
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This saves one return and a simple benchmark which calls glGetString
repeatedly on my desktop shows it improves calls per second from 118M
to 128M.
Signed-off-by: Lepton Wu <[email protected]>
Reviewed-by: Kristian H. Kristensen <[email protected]>
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Fixes: 5ec140c17b54c2592009 ("mapi: Massage code to allow clang to compile.")
Reported-by: Alexandre Demers <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
Signed-off-by: Eric Engestrom <[email protected]>
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According to https://llvm.org/bugs/show_bug.cgi?id=19778#c3 this code
was violating the spec, resulting in it failing to compile.
Cc: [email protected]
Co-authored-by: Tomasz Paweł Gajc <[email protected]>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=89599
Reviewed-by: Emil Velikov <[email protected]>
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Only U_STRINGIFY() is used in entry.c
Reviewed-by: Matt Turner <[email protected]>
Reviewed-by: José Fonseca <[email protected]>
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Commit 79daa510c added -Werror=pointer-arith to CFLAGS, which makes
arithmetic on void pointers an error.
See https://gcc.gnu.org/onlinedocs/gcc/Pointer-Arith.html
Reviewed-by: Brian Paul <[email protected]>
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Signed-off-by: Brian Paul <[email protected]>
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We don't support pre-2.6 kernels anyway - the install docs say 2.6.28
for DRI - and apparently this confuses ld.so's sorting when multiple
libGLs are installed. Just remove it.
Note: this is a candidate for the stable branches.
Acked-by: Kenneth Graunke <[email protected]>
Signed-off-by: Adam Jackson <[email protected]>
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Tested-by: Emil Velikov <[email protected]>
Reviewed-and-Tested-by: Andreas Boll <[email protected]>
Reviewed-by: Jordan Justen <[email protected]>
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