linux-dev - Linux kernel development work

Age	Commit message (Collapse)	Author	Files	Lines
2019-10-10	selftests: kvm: make syncregs more reliable on s390	Christian Borntraeger	1	-6/+9
	similar to commit 2c57da356800 ("selftests: kvm: fix sync_regs_test with newer gccs") and commit 204c91eff798a ("KVM: selftests: do not blindly clobber registers in guest asm") we better do not rely on gcc leaving r11 untouched. We can write the simple ucall inline and have the guest code completely as small assembler function. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Suggested-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com>
2019-09-04	KVM: selftests: Test invalid bits in kvm_valid_regs and kvm_dirty_regs on s390x	Thomas Huth	1	-0/+30
	Now that we disallow invalid bits in kvm_valid_regs and kvm_dirty_regs on s390x, too, we should also check this condition in the selftests. The code has been taken from the x86-version of the sync_regs_test. Reviewed-by: Janosch Frank <frankja@linux.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com> Link: https://lore.kernel.org/lkml/20190904085200.29021-3-thuth@redhat.com/ Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
2019-08-29	KVM: selftests: Add a test for the KVM_S390_MEM_OP ioctl	Thomas Huth	1	-0/+166
	Check that we can write and read the guest memory with this s390x ioctl, and that some error cases are handled correctly. Signed-off-by: Thomas Huth <thuth@redhat.com> Link: https://lkml.kernel.org/r/20190829130732.580-1-thuth@redhat.com Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2019-08-02	KVM: selftests: Implement ucall() for s390x	Thomas Huth	1	-2/+4
	On s390x, we can neither exit via PIO nor MMIO, but have to use an instruction like DIAGNOSE. Now that ucall() is implemented, we can use it in the sync_reg_test on s390x, too. Reviewed-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com> Link: https://lore.kernel.org/r/20190731151525.17156-3-thuth@redhat.com Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2019-06-04	KVM: selftests: Add the sync_regs test for s390x	Thomas Huth	1	-0/+151
	The test is an adaption of the same test for x86. Note that there are some differences in the way how s390x deals with the kvm_valid_regs in struct kvm_run, so some of the tests had to be removed. Also this test is not using the ucall() interface on s390x yet (which would need some work to be usable on s390x), so it simply drops out of the VM with a diag 0x501 breakpoint instead. Signed-off-by: Thomas Huth <thuth@redhat.com> Message-Id: <20190523164309.13345-8-thuth@redhat.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>