linux-toradex.git/arch/arm/kvm/emulate.c, branch v3.17 Linux kernel for Apalis and Colibri modules KVM: ARM: Fix typo in comments of inject_abt() 2013-10-02T16:29:19+00:00 Anup Patel anup.patel@linaro.org 2013-09-11T13:04:22+00:00 b373e492f3a3469c615c2ae218d2f723900bf981 Very minor typo in comments of inject_abt() when we update fault status register for injecting prefetch abort. Signed-off-by: Anup Patel <anup.patel@linaro.org> Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar@linaro.org> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org> 
Very minor typo in comments of inject_abt() when we update fault status
register for injecting prefetch abort.

Signed-off-by: Anup Patel <anup.patel@linaro.org>
Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar@linaro.org>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
ARM: KVM: move kvm_handle_wfi to handle_exit.c 2013-03-06T23:48:45+00:00 Marc Zyngier marc.zyngier@arm.com 2012-10-05T12:42:45+00:00 6190920a35068a621570cca7f07f3c4477615176 It has little to do in emulate.c these days... Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> 
It has little to do in emulate.c these days...

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
ARM: KVM: move kvm_condition_valid to emulate.c 2013-03-06T23:48:43+00:00 Marc Zyngier marc.zyngier@arm.com 2012-12-08T18:13:18+00:00 c5997563298bc1b9da5212c15544962d4dbbe27d This is really hardware emulation, and as such it better be with its little friends. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> 
This is really hardware emulation, and as such it better be with
its little friends.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
ARM: KVM: convert GP registers from u32 to unsigned long 2013-03-06T23:48:42+00:00 Marc Zyngier marc.zyngier@arm.com 2012-10-03T10:17:02+00:00 db730d8d623a0826f7fb6b74e890d3eb97a1b7a3 On 32bit ARM, unsigned long is guaranteed to be a 32bit quantity. On 64bit ARM, it is a 64bit quantity. In order to be able to share code between the two architectures, convert the registers to be unsigned long, so the core code can be oblivious of the change. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> 
On 32bit ARM, unsigned long is guaranteed to be a 32bit quantity.
On 64bit ARM, it is a 64bit quantity.

In order to be able to share code between the two architectures,
convert the registers to be unsigned long, so the core code can
be oblivious of the change.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
KVM: ARM: Emulation framework and CP15 emulation 2013-01-23T18:29:13+00:00 Christoffer Dall c.dall@virtualopensystems.com 2013-01-20T23:28:09+00:00 5b3e5e5bf230f56309706dfc05fc0cb173cc83aa Adds a new important function in the main KVM/ARM code called handle_exit() which is called from kvm_arch_vcpu_ioctl_run() on returns from guest execution. This function examines the Hyp-Syndrome-Register (HSR), which contains information telling KVM what caused the exit from the guest. Some of the reasons for an exit are CP15 accesses, which are not allowed from the guest and this commit handles these exits by emulating the intended operation in software and skipping the guest instruction. Minor notes about the coproc register reset: 1) We reserve a value of 0 as an invalid cp15 offset, to catch bugs in our table, at cost of 4 bytes per vcpu. 2) Added comments on the table indicating how we handle each register, for simplicity of understanding. Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Christoffer Dall <c.dall@virtualopensystems.com> 
Adds a new important function in the main KVM/ARM code called
handle_exit() which is called from kvm_arch_vcpu_ioctl_run() on returns
from guest execution. This function examines the Hyp-Syndrome-Register
(HSR), which contains information telling KVM what caused the exit from
the guest.

Some of the reasons for an exit are CP15 accesses, which are
not allowed from the guest and this commit handles these exits by
emulating the intended operation in software and skipping the guest
instruction.

Minor notes about the coproc register reset:
1) We reserve a value of 0 as an invalid cp15 offset, to catch bugs in our
   table, at cost of 4 bytes per vcpu.

2) Added comments on the table indicating how we handle each register, for
   simplicity of understanding.

Reviewed-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Christoffer Dall <c.dall@virtualopensystems.com>
KVM: ARM: Initial skeleton to compile KVM support 2013-01-23T18:29:10+00:00 Christoffer Dall c.dall@virtualopensystems.com 2013-01-20T23:28:06+00:00 749cf76c5a363e1383108a914ea09530bfa0bd43 Targets KVM support for Cortex A-15 processors. Contains all the framework components, make files, header files, some tracing functionality, and basic user space API. Only supported core is Cortex-A15 for now. Most functionality is in arch/arm/kvm/* or arch/arm/include/asm/kvm_*.h. Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <c.dall@virtualopensystems.com> 
Targets KVM support for Cortex A-15 processors.

Contains all the framework components, make files, header files, some
tracing functionality, and basic user space API.

Only supported core is Cortex-A15 for now.

Most functionality is in arch/arm/kvm/* or arch/arm/include/asm/kvm_*.h.

Reviewed-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <c.dall@virtualopensystems.com>