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4 Commits

Author SHA1 Message Date
Paolo Bonzini
3b339e2527 kvm: selftests: avoid type punning 
Avoid warnings from -Wstrict-aliasing by using memcpy.

Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
 2019-05-24 21:27:05 +02:00
Andrew Jones
57d5edfe64 kvm: selftests: ucall: fix exit mmio address guessing 
Fix two more bugs in the exit_mmio address guessing.
The first bug was that the start and step calculations were
wrong since they were dividing the number of address bits instead
of the address space. The second other bug was that the guessing
algorithm wasn't considering the valid physical and virtual address
ranges correctly for an identity map.

Signed-off-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
 2018-12-21 13:58:46 +01:00
Paolo Bonzini
5132411985 kvm: selftests: ucall: improve ucall placement in memory, fix unsigned comparison 
Based on a patch by Andrew Jones.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
 2018-12-14 18:00:08 +01:00
Andrew Jones
14c47b7530 kvm: selftests: introduce ucall 
Rework the guest exit to userspace code to generalize the concept
into what it is, a "hypercall to userspace", and provide two
implementations of it: the PortIO version currently used, but only
useable by x86, and an MMIO version that other architectures (except
s390) can use.

Signed-off-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
 2018-10-17 00:26:14 +02:00