qemu/target-i386
Eduardo Habkost 9337e3b6e1 target-i386: Disable PMU CPUID leaf by default
Bug description: QEMU currently gets all bits from GET_SUPPORTED_CPUID
for CPUID leaf 0xA and passes them directly to the guest. This makes
the guest ABI depend on host kernel and host CPU capabilities, and
breaks live migration if we migrate between hosts with different
capabilities (e.g., different number of PMU counters).

Add a "pmu" property to X86CPU, and set it to true only on "-cpu host",
or on pc-*-1.5 and older machine-types.

For now, setting pmu=on will enable the current passthrough mode that
doesn't have any ABI stability guarantees, but in the future we may
implement a mode where the PMU CPUID bits are stable and configurable.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-29 15:29:16 +02:00
..
arch_dump.c target-i386: Don't overuse CPUArchState 2013-07-09 21:33:02 +02:00
arch_memory_mapping.c cpu: Turn cpu_get_memory_mapping() into a CPUState hook 2013-06-11 18:03:35 +02:00
cc_helper_template.h target-i386: Implement BLSR, BLSMSK, BLSI 2013-02-18 15:52:05 -08:00
cc_helper.c target-i386/helper: remove DF macro 2013-06-15 17:50:21 +00:00
cpu-qom.h target-i386: Disable PMU CPUID leaf by default 2013-07-29 15:29:16 +02:00
cpu.c target-i386: Disable PMU CPUID leaf by default 2013-07-29 15:29:16 +02:00
cpu.h cpu: Introduce CPUClass::synchronize_from_tb() for cpu_pc_from_tb() 2013-07-23 02:41:32 +02:00
excp_helper.c target-i386/helper: remove EIP macro 2013-06-15 17:50:13 +00:00
fpu_helper.c target-i386: add AES-NI instructions 2013-04-13 13:51:57 +02:00
gdbstub.c cpu: Introduce CPUClass::gdb_{read,write}_register() 2013-07-27 00:04:17 +02:00
helper.c exec: Change cpu_memory_rw_debug() argument to CPUState 2013-07-23 02:41:33 +02:00
helper.h target-i386: Use mulu2 and muls2 2013-02-27 19:06:28 +00:00
hyperv.c hyper-v: introduce Hyper-V support infrastructure. 2012-01-19 08:32:12 -02:00
hyperv.h hyperv: fix build on non-KVM hosts 2012-01-23 20:04:51 +00:00
int_helper.c target-i386/helper: remove EDX macro 2013-06-15 17:49:10 +00:00
ioport-user.c exec: move include files to include/exec/ 2012-12-19 08:31:31 +01:00
kvm_i386.h softmmu: move include files to include/sysemu/ 2012-12-19 08:32:45 +01:00
kvm-stub.c kvm: Move kvm_allows_irq0_override() to target-i386, fix return type 2012-08-09 16:16:55 +03:00
kvm.c kvm: Change prototype of kvm_update_guest_debug() 2013-07-26 23:05:31 +02:00
machine.c Fix real mode guest segments dpl value in savevm 2013-07-23 14:36:10 +02:00
Makefile.objs cpu: Introduce CPUClass::gdb_{read,write}_register() 2013-07-27 00:04:17 +02:00
mem_helper.c target-i386/helper: remove EDX macro 2013-06-15 17:49:10 +00:00
misc_helper.c cpu: Make first_cpu and next_cpu CPUState 2013-07-09 21:32:54 +02:00
ops_sse_header.h target-i386: add AES-NI instructions 2013-04-13 13:51:57 +02:00
ops_sse.h target-i386: add AES-NI instructions 2013-04-13 13:51:57 +02:00
seg_helper.c target-i386: Change LOG_PCALL_STATE() argument to CPUState 2013-07-09 21:33:04 +02:00
shift_helper_template.h target-i386: compute eflags outside rcl/rcr helper 2013-02-18 15:03:56 -08:00
smm_helper.c log: Change log_cpu_state[_mask]() argument to CPUState 2013-07-09 21:33:04 +02:00
svm_helper.c target-i386: fix over 80 chars warnings 2013-06-15 17:50:38 +00:00
svm.h Use new macro QEMU_PACKED for packed structures 2011-09-03 10:45:59 +00:00
TODO target-i386: fix {min,max}{pd,ps,sd,ss} SSE2 instructions 2012-01-11 09:55:28 +01:00
topology.h target-i386: Inline bitops_flsl 2013-02-16 11:12:29 +00:00
translate.c cpu: Move singlestep_enabled field from CPU_COMMON to CPUState 2013-07-23 02:41:32 +02:00