Re: [Qemu-devel] [PATCH qom-cpu v2 19/29] cpu: Replace cpu_single_env with CPUState cpu_single_cpu

["Andreas Färber" <afaerber@suse.de>]

Am 16.06.2013 22:49, schrieb Blue Swirl:
> On Sun, Jun 16, 2013 at 3:57 PM, Andreas Färber <afaerber@suse.de> wrote:
>> Move it to qom/cpu.h.
> 
> While renaming, perhaps a more descriptive name could be used instead
> of 'cpu_single_cpu', something like cpu_loop_current_cpu?

There were some local variables named cpu_single_cpu (blame me :)) that
this way simply fall away, but I can certainly rename it, adding just a
few lines to the patch.

However, cpu_loop_current_cpu seems to codify that we have a sequential
loop of vCPUs, which Xen and IIUC KVM do not have and occasionally
people have looked into changing for TCG.

current_cpu is already used in a few places:

include/sysemu/kvm.h:int kvm_arch_insert_sw_breakpoint(CPUState
*current_cpu,
include/sysemu/kvm.h:int kvm_arch_remove_sw_breakpoint(CPUState
*current_cpu,
kvm-all.c:    CPUState *current_cpu = ENV_GET_CPU(current_env);
kvm-all.c:        bp = kvm_find_sw_breakpoint(current_cpu, addr);
kvm-all.c:        err = kvm_arch_insert_sw_breakpoint(current_cpu, bp);
kvm-all.c:
QTAILQ_INSERT_HEAD(&current_cpu->kvm_state->kvm_sw_breakpoints,
kvm-all.c:    CPUState *current_cpu = ENV_GET_CPU(current_env);
kvm-all.c:        bp = kvm_find_sw_breakpoint(current_cpu, addr);
kvm-all.c:        err = kvm_arch_remove_sw_breakpoint(current_cpu, bp);
kvm-all.c:
QTAILQ_REMOVE(&current_cpu->kvm_state->kvm_sw_breakpoints, bp, entry);
kvm-all.c:    CPUState *current_cpu = ENV_GET_CPU(current_env);
kvm-all.c:    KVMState *s = current_cpu->kvm_state;
kvm-all.c:        if (kvm_arch_remove_sw_breakpoint(current_cpu, bp) != 0) {

but we could probably ignore these variable shadowings.

Andreas

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