pm24.git/arch/um/os-Linux, branch v5.6

um: ubd: use 64-bit time_t where possible

2019-12-18T17:07:31Z

The ubd code suffers from a possible y2038 overflow on 32-bit architectures, both for the cow header and the os_file_modtime() function. Replace time_t with time64_t to extend the ubd_kern side as much as possible. Whether this makes a difference for the user side depends on the host libc implementation that may use either 32-bit or 64-bit time_t. For the cow file format, the header contains an unsigned 32-bit timestamp, which is good until y2106, passing this through a 'long long' gives us a consistent interpretation between 32-bit and 64-bit um kernels. Signed-off-by: Arnd Bergmann

um: Don't trace irqflags during shutdown

2019-11-25T21:42:57Z

In the main() code, we eventually enable signals just before exec() or exit(), in order to to not have signals pending and delivered *after* the exec(). I've observed SIGSEGV loops at this point, and the reason seems to be the irqflags tracing; this makes sense as the kernel is no longer really functional at this point. Since there's really no reason to use unblock_signals_trace() here (I had just done a global search & replace), use the plain unblock_signals() in this case to avoid going into the no longer functional kernel. Fixes: 0dafcbe128d2 ("um: Implement TRACE_IRQFLAGS_SUPPORT") Signed-off-by: Johannes Berg Signed-off-by: Richard Weinberger

um: Add SPDX headers for files in arch/um/os-Linux

2019-09-15T19:37:17Z

Convert files to use SPDX header. All files are licensed under the GPLv2. Signed-off-by: Alex Dewar Signed-off-by: Richard Weinberger

um: drivers: Add virtio vhost-user driver

2019-09-15T19:37:15Z

This module allows virtio devices to be used over a vhost-user socket. Signed-off-by: Erel Geron Signed-off-by: Johannes Berg Signed-off-by: Richard Weinberger

um: Implement TRACE_IRQFLAGS_SUPPORT

2019-09-15T19:37:11Z

UML enables TRACE_IRQFLAGS_SUPPORT but doesn't actually implement it. It seems to have been added for lockdep support, but that can't actually really work well without IRQ flags tracing, as is also very noisily reported when enabling CONFIG_DEBUG_LOCKDEP. Implement it now. Fixes: 711553efa5b8 ("[PATCH] uml: declare in Kconfig our partial LOCKDEP support") Signed-off-by: Johannes Berg Signed-off-by: Richard Weinberger

um: Avoid using uninitialized regs

2019-09-15T19:37:10Z

In timer_real_alarm_handler(), regs is only initialized if the context argument is non-NULL, also initialize in the other case. Signed-off-by: Johannes Berg Acked-by: Anton Ivanov Signed-off-by: Richard Weinberger

um: Remove sig_info[SIGALRM]

2019-09-15T19:37:10Z

This entry is misleading, the actual signal handler is another one that never uses sig_info. Also remove the SIGALRM if inside sig_handler() for the same reason. Signed-off-by: Johannes Berg Acked-by: Anton Ivanov Signed-off-by: Richard Weinberger

um: Pass nsecs to os timer functions

2019-07-02T21:27:29Z

This makes the code clearer and lets the time travel patch have the actual time used for these functions in just one place. Signed-off-by: Johannes Berg Signed-off-by: Richard Weinberger

um: Timer code cleanup

2019-07-02T21:27:00Z

There are some unused functions, and some others that have unused arguments; clean up the timer code a bit. Signed-off-by: Johannes Berg Signed-off-by: Richard Weinberger

um: fix os_timer_one_shot()

2019-07-02T21:26:57Z

os_timer_one_shot() gets passed a value "unsigned long delta", so must not have an "int ticks" as that actually ends up being -1, and thus triggering a timer over and over again. Signed-off-by: Johannes Berg Signed-off-by: Richard Weinberger