When the host CPU we're running on doesn't support dcbz32 itself, but the
guest wants to have dcbz only clear 32 bytes of data, we loop through every
executable mapped page to search for dcbz instructions and patch them with
a special privileged instruction that we emulate as dcbz32.
The only
The HTAB is always big endian. We access the guest's HTAB using
copy_from/to_user, but don't yet take care of the fact that we might
be running on an LE host.
Wrap all accesses to the guest HTAB with big endian accessors.
Signed-off-by: Alexander Graf ag...@suse.de
---
When we calculate the actual MSR that the guest is running with when in guest
context, we take a few MSR bits from the MSR the guest thinks it's using.
Add MSR_LE to these bits, so the guest gets full control over its own endianness
setting.
Signed-off-by: Alexander Graf ag...@suse.de
---
With the previous patches applied, we can now successfully use PR KVM on
little endian hosts which means we can now allow users to select it.
However, HV KVM still needs some work, so let's keep the kconfig conflict
on that one.
Signed-off-by: Alexander Graf ag...@suse.de
---
The shadow SLB in the PACA is shared with the hypervisor, so it has to
be big endian. We access the shadow SLB during world switch, so let's make
sure we access it in big endian even when we're on a little endian host.
Signed-off-by: Alexander Graf ag...@suse.de
---
During the enablement of ppc64le KVM has been kept unfixed. This patch set
is the initial attempt to make all of KVM work on ppc64le hosts. It starts
the effort by bringing PR KVM over.
With this patch set I am successfully able to run book3s_32 (BE) and
book3s_64 (BE, LE) guests on a host
We expose a blob of hypercall instructions to user space that it gives to
the guest via device tree again. That blob should contain a stream of
instructions necessary to do a hypercall in big endian, as it just gets
passed into the guest and old guests use them straight away.
Signed-off-by:
The HTAB on PPC is always in big endian. When we access it via hypercalls
on behalf of the guest and we're running on a little endian host, we need
to make sure we swap the bits accordingly.
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/kvm/book3s_pr_papr.c | 14 +++---
1
The shared (magic) page is a data structure that contains often used
supervisor privileged SPRs accessible via memory to the user to reduce
the number of exits we have to take to read/write them.
When we actually share this structure with the guest we have to maintain
it in guest endianness,
The HTAB is always big endian. We access the guest's HTAB using
copy_from/to_user, but don't yet take care of the fact that we might
be running on an LE host.
Wrap all accesses to the guest HTAB with big endian accessors.
Signed-off-by: Alexander Graf ag...@suse.de
---
The default MSR when user space does not define anything should be identical
on little and big endian hosts, so remove MSR_LE from it.
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/kvm/book3s_pr.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git
To control whether we should inject interrupts in little or big endian
mode, user space sets the LPCR.ILE bit accordingly via ONE_REG.
Let's implement it, so we are able to trigger interrupts in LE mode.
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/include/asm/kvm_book3s.h | 1 +
When the guest does an RTAS hypercall it keeps all RTAS variables inside a
big endian data structure.
To make sure we don't have to bother about endianness inside the actual RTAS
handlers, let's just convert the whole structure to host endian before we
call our RTAS handlers and back to big
13 matches
Mail list logo
