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authorAlex Bennée <alex.bennee@linaro.org>2015-07-07 17:30:00 +0100
committerMarc Zyngier <marc.zyngier@arm.com>2015-07-21 12:50:25 +0100
commit84e690bfbed1d1ecb45d8eccd4c7b6c8e878da1c (patch)
tree23c5f0e26467c3003f05abf8ba7133ebb246d0f5 /arch/arm/kvm
parente0a1b9a937dc6df9eb402af8966b5d617c7c6b34 (diff)
downloadlinux-84e690bfbed1d1ecb45d8eccd4c7b6c8e878da1c.tar.bz2
KVM: arm64: introduce vcpu->arch.debug_ptr
This introduces a level of indirection for the debug registers. Instead of using the sys_regs[] directly we store registers in a structure in the vcpu. The new kvm_arm_reset_debug_ptr() sets the debug ptr to the guest context. Because we no longer give the sys_regs offset for the sys_reg_desc->reg field, but instead the index into a debug-specific struct we need to add a number of additional trap functions for each register. Also as the generic generic user-space access code no longer works we have introduced a new pair of function pointers to the sys_reg_desc structure to override the generic code when needed. Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'arch/arm/kvm')
-rw-r--r--arch/arm/kvm/arm.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c
index 77151b111d32..9ce5cf02ed17 100644
--- a/arch/arm/kvm/arm.c
+++ b/arch/arm/kvm/arm.c
@@ -278,6 +278,8 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
/* Set up the timer */
kvm_timer_vcpu_init(vcpu);
+ kvm_arm_reset_debug_ptr(vcpu);
+
return 0;
}