linux/arch/s390/kvm
Jan H. Schönherr 20b7035c66 KVM: Let KVM_SET_SIGNAL_MASK work as advertised
KVM API says for the signal mask you set via KVM_SET_SIGNAL_MASK, that
"any unblocked signal received [...] will cause KVM_RUN to return with
-EINTR" and that "the signal will only be delivered if not blocked by
the original signal mask".

This, however, is only true, when the calling task has a signal handler
registered for a signal. If not, signal evaluation is short-circuited for
SIG_IGN and SIG_DFL, and the signal is either ignored without KVM_RUN
returning or the whole process is terminated.

Make KVM_SET_SIGNAL_MASK behave as advertised by utilizing logic similar
to that in do_sigtimedwait() to avoid short-circuiting of signals.

Signed-off-by: Jan H. Schönherr <jschoenh@amazon.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-11-27 17:53:47 +01:00
..
diag.c First batch of KVM changes for 4.14 2017-09-08 15:18:36 -07:00
gaccess.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
gaccess.h s390: rename psw_bits enums 2017-06-12 16:26:02 +02:00
guestdbg.c KVM: s390: guestdbg: fix range check 2017-08-31 13:49:39 +02:00
intercept.c s390/sthyi: add cache to store hypervisor info 2017-10-09 11:15:35 +02:00
interrupt.c First batch of KVM changes for 4.15 2017-11-16 13:00:24 -08:00
irq.h KVM: s390: irq routing for adapter interrupts. 2014-03-21 13:43:00 +01:00
Kconfig License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
kvm-s390.c KVM: Let KVM_SET_SIGNAL_MASK work as advertised 2017-11-27 17:53:47 +01:00
kvm-s390.h s390/sthyi: reorganize sthyi implementation 2017-10-09 11:15:33 +02:00
Makefile s390/sthyi: reorganize sthyi implementation 2017-10-09 11:15:33 +02:00
priv.c First batch of KVM changes for 4.14 2017-09-08 15:18:36 -07:00
sigp.c KVM: s390: Support Configuration z/Architecture Mode 2017-08-28 16:25:13 +02:00
trace-s390.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
trace.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vsie.c KVM: s390: vsie: use common code functions for pinning 2017-11-09 09:49:47 +01:00