[REPOST,0/5] armv7 BE kvm support

Commit Message

Victor Kamensky Dec. 20, 2013, 4:48 p.m. UTC

[repost: adding kvmarm mailing list as per Christoffer's request]

Hi Guys,

Here is series that enables KVM support for V7 big endian kernels. Mostly
it deals with BE KVM host support. Marc Zyngier showed before with his patches
how BE guest could run on top LE host. With these patches BE guest runs on 
top of BE host. If Marc's kvmtool is used with few additional changes I tested
that BE host could run LE guest. Also I verified that there were no 
regressions in BE guest on top of LE host case.

Note that posted series covers only kernel side changes. The changes were
tested inside of bigger setup with additional changes in qemu and kvmtool.
I will post those changes separately in proper aliases but for completeness 
sake Appendix A gives pointers to git repositories and branches with all
needed changes.

Please note first patch is not related to BE KVM per se. I've run
into an issue of conflicting 'push' identifier use while trying to include 
assembler.h into KVM .S files. Details of an issue I observed covered in
Appendix B. The first patch is my take on solving it.

Victor Kamensky (5):
  ARM: kvm: replace push and pop with stdmb and ldmia instrs to enable
    assembler.h inclusion
  ARM: fix KVM assembler files to work in BE case
  ARM: kvm one_reg coproc set and get BE fixes
  ARM: kvm vgic mmio should return data in BE format in BE case
  ARM: kvm MMIO support BE host running LE code

 arch/arm/include/asm/assembler.h   |  7 +++
 arch/arm/include/asm/kvm_asm.h     |  4 +-
 arch/arm/include/asm/kvm_emulate.h | 22 +++++++--
 arch/arm/kvm/coproc.c              | 94 ++++++++++++++++++++++++++++----------
 arch/arm/kvm/init.S                |  7 ++-
 arch/arm/kvm/interrupts.S          | 50 +++++++++++---------
 arch/arm/kvm/interrupts_head.S     | 61 +++++++++++++++----------
 virt/kvm/arm/vgic.c                |  4 +-
 8 files changed, 168 insertions(+), 81 deletions(-)

Patch

diff --git a/arch/arm/kvm/interrupts.S b/arch/arm/kvm/interrupts.S
index ddc1553..5d3b511 100644
--- a/arch/arm/kvm/interrupts.S
+++ b/arch/arm/kvm/interrupts.S
@@ -25,6 +25,7 @@ 
 #include <asm/kvm_asm.h>
 #include <asm/kvm_arm.h>
 #include <asm/vfpmacros.h>
+#include <asm/assembler.h>
 #include "interrupts_head.S"
 
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