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Name Size
cpu.h 33.8 kB
helper.c 17.4 kB
helpers.h 6.3 kB
kvm.c 11.2 kB
machine.c 930 Bytes
op_helper.c 74.5 kB
translate.c 162.9 kB

Latest revisions

# Date Author Comment
7d77793d 01/04/2012 03:48 am Alexander Graf

s390x: add TR function for EXECUTE

Newer gcc versions (or glibc?) also generate code that tries to EXECUTE
the TR opcode. Implement it so that we don't break valid guests.

Reported-by: Andreas Faerber <>
Signed-off-by: Alexander Graf <>
93116ac0 01/04/2012 03:48 am Christian Borntraeger

s390: fix cpu hotplug / cpu activity on interrupts

The add_del/running_cpu code and env->halted are tracking stopped cpus.
Sleeping cpus (idle and enabled for interrupts) are waiting inside the
kernel.
No interrupt besides the restart can move a cpu from stopped to...
e7d81004 12/14/2011 01:09 pm Stefan Weil

Fix spelling in comments, documentation and messages

accidently->accidentally
annother->another
choosen->chosen
consideres->considers
decriptor->descriptor
developement->development
paramter->parameter
preceed->precede
preceeding->preceding
priviledge->privilege...
3a93113a 12/06/2011 11:56 am Dong Xu Wang

fix typo: delete redundant semicolon

Double semicolons should be single.

Signed-off-by: Dong Xu Wang <>
Signed-off-by: Stefan Hajnoczi <>
09ed75f7 11/14/2011 06:47 pm Alexander Graf

s390x: make ipte 31-bit aware

When running 31-bit code we can potentially map the same virtual
address twice - once as 0x0yyyyyyy and once as 0x8yyyyyyy, because
the upper bit gets ignored.

This also should be reflected in the tlb invalidation path, so we...
b9959138 11/14/2011 06:47 pm Alexander Graf

s390x: update R and C bits in storage key

When the s390x maps a page or writes happen to a page, the R and C
bits get updated. The easiest way to implement this in qemu is to
simply update them whenever we map a TLB translation and act according
to the permissions....
17bb18ce 11/14/2011 06:47 pm Alexander Graf

s390x: implement rrbe instruction properly

The rrbe instruction resets the reference bit in the given storage key.
So far, we merely made it a nop and also returned an invalid CC value,
so that the kernel never knew if a page actually got accessed.

This patch implements it properly, flushing the R bit and returning the...
1864b94a 11/14/2011 06:47 pm Alexander Graf

s390x: implement SIGP restart and shutdown

An s390x OS does reboot and shutdown triggers through hypercalls that
we didn't implement on the TCG backend yet. That means that so far we
couldn't shut down virtual machines for example, having them hang on
shutdown when not using KVM....
854e42f3 11/14/2011 06:47 pm Christian Borntraeger

s390: Fix cpu shutdown for KVM

On s390 a shutdown is the state of all CPUs being either stopped
or disabled (for interrupts) waiting. We have to track the overall
number of running CPUs to call the shutdown sequence accordingly.
This patch implements the counting and shutdown handling for the...
ef81522b 11/14/2011 06:47 pm Alexander Graf

s390x: Add shutdown for TCG s390-virtio machine

Now that we have code in place to do refcounting of online CPUs, we
can drag the TCG code along and implement shutdown for that one too,
so it doesn't feel left out by its KVM counterpart.

Signed-off-by: Alexander Graf <>

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