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  1. 26 9月, 2011 9 次提交
    • A
      KVM: PPC: Support SC1 hypercalls for PAPR in PR mode · a668f2bd
      由 Alexander Graf 提交于 
      PAPR defines hypercalls as SC1 instructions. Using these, the guest modifies
page tables and does other privileged operations that it wouldn't be allowed
to do in supervisor mode.

This patch adds support for PR KVM to trap these instructions and route them
through the same PAPR hypercall interface that we already use for HV style
KVM.
Signed-off-by: NAlexander Graf <agraf@suse.de>
      a668f2bd
    • A
      KVM: PPC: Stub emulate CFAR and PURR SPRs · aacf9aa3
      由 Alexander Graf 提交于 
      Recent Linux versions use the CFAR and PURR SPRs, but don't really care about
their contents (yet). So for now, we can simply return 0 when the guest wants
to read them.
Signed-off-by: NAlexander Graf <agraf@suse.de>
      aacf9aa3
    • A
      KVM: PPC: Add PAPR hypercall code for PR mode · 0254f074
      由 Alexander Graf 提交于 
      When running a PAPR guest, we need to handle a few hypercalls in kernel space,
most prominently the page table invalidation (to sync the shadows).

So this patch adds handling for a few PAPR hypercalls to PR mode KVM. I tried
to share the code with HV mode, but it ended up being a lot easier this way
around, as the two differ too much in those details.
Signed-off-by: NAlexander Graf <agraf@suse.de>

---

v1 -> v2:

  - whitespace fix
      0254f074
    • A
      KVM: PPC: Add support for explicit HIOR setting · a15bd354
      由 Alexander Graf 提交于 
      Until now, we always set HIOR based on the PVR, but this is just wrong.
Instead, we should be setting HIOR explicitly, so user space can decide
what the initial HIOR value is - just like on real hardware.

We keep the old PVR based way around for backwards compatibility, but
once user space uses the SREGS based method, we drop the PVR logic.
Signed-off-by: NAlexander Graf <agraf@suse.de>
      a15bd354
    • A
      KVM: PPC: Read out syscall instruction on trap · 77e675ad
      由 Alexander Graf 提交于 
      We have a few traps where we cache the instruction that cause the trap
for analysis later on. Since we now need to be able to distinguish
between SC 0 and SC 1 system calls and the only way to find out which
is which is by looking at the instruction, we also read out the instruction
causing the system call.
Signed-off-by: NAlexander Graf <agraf@suse.de>
      77e675ad
    • A
      KVM: PPC: Interpret SDR1 as HVA in PAPR mode · 04fcc11b
      由 Alexander Graf 提交于 
      When running a PAPR guest, the guest is not allowed to set SDR1 - instead
the HTAB information is held in internal hypervisor structures. But all of
our current code relies on SDR1 and walking the HTAB like on real hardware.

So in order to not be too intrusive, we simply set SDR1 to the HTAB we hold
in host memory. That way we can keep the HTAB in user space, but use it from
kernel space to map the guest.
Signed-off-by: NAlexander Graf <agraf@suse.de>
      04fcc11b
    • A
      KVM: PPC: Check privilege level on SPRs · 317a8fa3
      由 Alexander Graf 提交于 
      We have 3 privilege levels: problem state, supervisor state and hypervisor
state. Each of them can access different SPRs, so we need to check on every
SPR if it's accessible in the respective mode.
Signed-off-by: NAlexander Graf <agraf@suse.de>
      317a8fa3
    • A
      KVM: PPC: Add papr_enabled flag · 9432ba60
      由 Alexander Graf 提交于 
      When running a PAPR guest, some things change. The privilege level drops
from hypervisor to supervisor, SDR1 gets treated differently and we interpret
hypercalls. For bisectability sake, add the flag now, but only enable it when
all the support code is there.
Signed-off-by: NAlexander Graf <agraf@suse.de>
      9432ba60
    • A
      KVM: PPC: move compute_tlbie_rb to book3s common header · db507c30
      由 Alexander Graf 提交于 
      We need the compute_tlbie_rb in _pr and _hv implementations for papr
soon, so let's move it over to a common header file that both
implementations can leverage.
Signed-off-by: NAlexander Graf <agraf@suse.de>
      db507c30
  3. 31 8月, 2011 3 次提交
  5. 30 8月, 2011 1 次提交
  7. 26 8月, 2011 1 次提交
  9. 10 8月, 2011 1 次提交
  11. 05 8月, 2011 17 次提交
  13. 03 8月, 2011 1 次提交
  15. 27 7月, 2011 5 次提交
  17. 26 7月, 2011 1 次提交
  19. 24 7月, 2011 1 次提交