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target-arm: kvm64 - introduce kvm_arm_init_debug()

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As we haven't always had guest debug support we need to probe for it.
Additionally we don't do this in the start-up capability code so we
don't fall over on old kernels.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 1449599553-24713-2-git-send-email-alex.bennee@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Alex Bennée 2015-12-17 13:37:14 +00:00 committed by Peter Maydell
parent 3e6ebb64a3
commit 29eb3d9a91
1 changed files with 18 additions and 0 deletions
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18
target-arm/kvm64.c
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@ -25,6 +25,22 @@
#include "internals.h"
#include "hw/arm/arm.h"
static bool have_guest_debug;
/**
* kvm_arm_init_debug()
* @cs: CPUState
*
* Check for guest debug capabilities.
*
*/
static void kvm_arm_init_debug(CPUState *cs)
{
have_guest_debug = kvm_check_extension(cs->kvm_state,
KVM_CAP_SET_GUEST_DEBUG);
return;
}
static inline void set_feature(uint64_t *features, int feature)
{
*features |= 1ULL << feature;
@ -121,6 +137,8 @@ int kvm_arch_init_vcpu(CPUState *cs)
}
cpu->mp_affinity = mpidr & ARM64_AFFINITY_MASK;
kvm_arm_init_debug(cs);
return kvm_arm_init_cpreg_list(cpu);
}