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Remove vDSO from Makefile to move the to selftests. Update vDSO Makefile
to work under selftests. vDSO will not be run as part of selftests suite
and will not be included in install targets. They can be built separately
for now.
Acked-by: Jonathan Corbet <[email protected]>
Signed-off-by: Shuah Khan <[email protected]>
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The following was seen in linux-next build coverage, which is somewhat
unique since it uses powerpc host to cross compile x86:
Documentation/vDSO/vdso_standalone_test_x86.c:49:2: error: impossible
register constraint in 'asm'
make[4]: *** [Documentation/vDSO/vdso_standalone_test_x86.o] Error 1
It probably makes sense to just skip building these tests when
we are cross compiling.
Cc: Jonathan Corbet <[email protected]>
Cc: [email protected]
Cc: Andy Lutomirski <[email protected]>
Signed-off-by: Paul Gortmaker <[email protected]>
Signed-off-by: Jonathan Corbet <[email protected]>
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The use of 64-bit math on i386 causes build failures:
vdso_standalone_test_x86.c:(.text+0x101): undefined reference to `__umoddi3'
vdso_standalone_test_x86.c:(.text+0x12d): undefined reference to `__udivdi3'
Commit adb19fb66ee (Documentation: add makefiles for more targets) is
now building this by default, so it's failing the kernel build entirely.
Switching the declaration from uint64_t to time_t does the right thing
and handles the x32 case automatically.
Signed-off-by: Jeff Mahoney <[email protected]>
Acked-by: Peter Foley <[email protected]>
Signed-off-by: Jonathan Corbet <[email protected]>
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vdso_standalone_test_x86 needs -lgcc_s to build succesfully on 32bit.
Signed-off-by: Peter Foley <[email protected]>
[ Fixed missing separator issue reported by Paul Bolle <[email protected]> ]
Signed-off-by: Jonathan Corbet <[email protected]>
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glibc versions older than 2.16 don't include sys/auxv.h which this
executable uses.
Since we don't have a good way to test for specific glibc versions in
kbuild, just disable it for now.
Signed-off-by: Peter Foley <[email protected]>
Signed-off-by: Randy Dunlap <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
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Signed-off-by: Peter Foley <[email protected]>
Signed-off-by: Randy Dunlap <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
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Add some missing files to .gitignore.
Push Documentation/.gitignore down into subdirectories.
Signed-off-by: Peter Foley <[email protected]>
Signed-off-by: Randy Dunlap <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
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Add a bunch of previously unbuilt source files to the Documentation build
machinery.
Signed-off-by: Peter Foley <[email protected]>
Signed-off-by: Randy Dunlap <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
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This adds a new vdso_test.c that's written entirely in C. It also
makes all of the vDSO examples work on 32-bit x86.
Cc: Stefani Seibold <[email protected]>
Signed-off-by: Andy Lutomirski <[email protected]>
Link: http://lkml.kernel.org/r/62b701fc44b79f118ac2b2d64d19965fc5c291fb.1402620737.git.luto@amacapital.net
Signed-off-by: H. Peter Anvin <[email protected]>
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This thing is hopelessly x86_64-specific: it's an example of how to
access the vDSO without any runtime support at all.
Signed-off-by: Andy Lutomirski <[email protected]>
Link: http://lkml.kernel.org/r/3efc170e0e166e15f0150c9fdb37d52488b9c0a4.1402620737.git.luto@amacapital.net
Signed-off-by: H. Peter Anvin <[email protected]>
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It turns out that parsing the vDSO is nontrivial if you don't already
have an ELF dynamic loader around. So document it in Documentation/ABI
and add a reference CC0-licenced parser.
This code is dedicated to Go issue 1933:
http://code.google.com/p/go/issues/detail?id=1933
Signed-off-by: Andy Lutomirski <[email protected]>
Link: http://lkml.kernel.org/r/a315a9514cd71bcf29436cc31e35aada21a5ff21.1310563276.git.luto@mit.edu
Signed-off-by: H. Peter Anvin <[email protected]>
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