kvm: Allow kvm_arch_get/put_registers to accept Error**

This is necessary to provide discernible error messages to the caller.

Signed-off-by: Julia Suvorova <jusual@redhat.com>
Reviewed-by: Peter X

kvm: Allow kvm_arch_get/put_registers to accept Error**

This is necessary to provide discernible error messages to the caller.

Signed-off-by: Julia Suvorova <jusual@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Link: https://lore.kernel.org/r/20240927104743.218468-2-jusual@redhat.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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gdbstub: move enums into separate header

This is an experiment to further reduce the amount we throw into the
exec headers. It might not be as useful as I initially thought because
just under half o

gdbstub: move enums into separate header

This is an experiment to further reduce the amount we throw into the
exec headers. It might not be as useful as I initially thought because
just under half of the users also need gdbserver_start().

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240620152220.2192768-3-alex.bennee@linaro.org>

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target/s390x/cpu_models: Make kvm_s390_apply_cpu_model() return boolean

As error.h suggested, the best practice for callee is to return
something to indicate success / failure.

So make kvm_s390_app

target/s390x/cpu_models: Make kvm_s390_apply_cpu_model() return boolean

As error.h suggested, the best practice for callee is to return
something to indicate success / failure.

So make kvm_s390_apply_cpu_model() return boolean and check the
returned boolean in apply_cpu_model() instead of accessing @err.

Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20240425031232.1586401-7-zhao1.liu@intel.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

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target/s390x/cpu_models: Make kvm_s390_get_host_cpu_model() return boolean

As error.h suggested, the best practice for callee is to return
something to indicate success / failure.

So make kvm_s390_

target/s390x/cpu_models: Make kvm_s390_get_host_cpu_model() return boolean

As error.h suggested, the best practice for callee is to return
something to indicate success / failure.

So make kvm_s390_get_host_cpu_model() return boolean and check the
returned boolean in get_max_cpu_model() instead of accessing @err.

Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20240425031232.1586401-5-zhao1.liu@intel.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

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KVM: remove kvm_arch_cpu_check_are_resettable

Board reset requires writing a fresh CPU state. As far as KVM is
concerned, the only thing that blocks reset is that CPU state is
encrypted; therefore,

KVM: remove kvm_arch_cpu_check_are_resettable

Board reset requires writing a fresh CPU state. As far as KVM is
concerned, the only thing that blocks reset is that CPU state is
encrypted; therefore, kvm_cpus_are_resettable() can simply check
if that is the case.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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s390: Switch to use confidential_guest_kvm_init()

Use unified confidential_guest_kvm_init() for consistency with
other architectures.

Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Message-Id: <2

s390: Switch to use confidential_guest_kvm_init()

Use unified confidential_guest_kvm_init() for consistency with
other architectures.

Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Message-Id: <20240229060038.606591-1-xiaoyao.li@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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