Searched hist:c599a782 (Results 1 – 2 of 2) sorted by relevance
| /openbmc/linux/arch/sparc/kernel/ |
| H A D | rtrap_32.S | c599a782 Thu Feb 04 10:23:41 CST 2021 Andreas Larsson <andreas@gaisler.com> sparc32: Preserve clone syscall flags argument for restarts due to signals
This fixes a bug where a clone syscall that is restarted due to a
pending signal is restarted with garbage in the register %o0 that holds
the clone flags.
This keep the original %i0 of a syscall (as seen from the trap handler)
in %l6 rather than %l5. This is done because for clone (and also qfork)
%l5 is used as a temporary variable in the same register window. Before
this, that temporary value would be the value that was then incorrectly
used as the orig_i0 argument to do_notify_resume.
In order to preserve %l6, the temporary usage of %l6 in ret_sys_call is
changed to use %l5 instead and the setting %l6 to 0 or 1 was removed.
The use of that 0 or 1 value in %l6 was removed in commit
28e6103665301ce60634e8a77f0b657c6cc099de.
Signed-off-by: Andreas Larsson <andreas@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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| H A D | entry.S | c599a782 Thu Feb 04 10:23:41 CST 2021 Andreas Larsson <andreas@gaisler.com> sparc32: Preserve clone syscall flags argument for restarts due to signals
This fixes a bug where a clone syscall that is restarted due to a
pending signal is restarted with garbage in the register %o0 that holds
the clone flags.
This keep the original %i0 of a syscall (as seen from the trap handler)
in %l6 rather than %l5. This is done because for clone (and also qfork)
%l5 is used as a temporary variable in the same register window. Before
this, that temporary value would be the value that was then incorrectly
used as the orig_i0 argument to do_notify_resume.
In order to preserve %l6, the temporary usage of %l6 in ret_sys_call is
changed to use %l5 instead and the setting %l6 to 0 or 1 was removed.
The use of that 0 or 1 value in %l6 was removed in commit
28e6103665301ce60634e8a77f0b657c6cc099de.
Signed-off-by: Andreas Larsson <andreas@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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