mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
74aaddc628
qemu/target/i386
History
Marcelo Tosatti 74aaddc628 kvm: i386: allow TSC to differ by NTP correction bounds without TSC scaling 
The Linux TSC calibration procedure is subject to small variations
(its common to see +-1 kHz difference between reboots on a given CPU, for example).

So migrating a guest between two hosts with identical processor can fail, in case
of a small variation in calibrated TSC between them.

Allow a conservative 250ppm error between host TSC and VM TSC frequencies,
rather than requiring an exact match. NTP daemon in the guest can
correct this difference.

Also change migration to accept this bound.

KVM_SET_TSC_KHZ depends on a kernel interface change. Without this change,
the behaviour remains the same: in case of a different frequency
between host and VM, KVM_SET_TSC_KHZ will fail and QEMU will exit.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

Message-Id: <20200616165805.GA324612@fuller.cnet>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-06-26 09:39:40 -04:00
..
hvf i386: hvf: Drop HVFX86EmulatorState 2020-06-12 11:20:12 -04:00
arch_dump.c dump: add kernel_gs_base to QEMU CPU state 2018-07-16 16:13:34 +02:00
arch_memory_mapping.c exec,dump,i386,ppc,s390x: don't include exec/cpu-all.h explicitly 2017-09-19 18:21:33 +02:00
bpt_helper.c target/i386: Use env_cpu, env_archcpu 2019-06-10 07:03:42 -07:00
cc_helper_template.h
cc_helper.c target-i386: Use ctpop helper 2017-01-10 08:49:59 -08:00
cpu-param.h tcg: Split out target/arch/cpu-param.h 2019-06-10 07:03:34 -07:00
cpu-qom.h cpu: Use DeviceClass reset instead of a special CPUClass reset 2020-03-17 19:48:10 -04:00
cpu.c target/i386: Add notes for versioned CPU models 2020-06-26 09:39:39 -04:00
cpu.h i386: hvf: Drop HVFX86EmulatorState 2020-06-12 11:20:12 -04:00
excp_helper.c sysemu: Split sysemu/runstate.h off sysemu/sysemu.h 2019-08-16 13:37:36 +02:00
fpu_helper.c target/i386: reimplement fpatan using floatx80 operations 2020-06-26 09:39:39 -04:00
gdbstub.c gdbstub: i386: Fix gdb_get_reg16() parameter to unbreak gdb 2020-04-15 11:38:23 +01:00
hax-all.c hax: Dynamic allocate vcpu state structure 2020-06-10 12:09:59 -04:00
hax-i386.h i386: Remove unused define's from hax and hvf 2020-06-10 12:10:47 -04:00
hax-interface.h Clean up ill-advised or unusual header guards 2019-05-13 08:58:55 +02:00
hax-mem.c qemu/queue.h: leave head structs anonymous unless necessary 2019-01-11 15:46:55 +01:00
hax-posix.c i386: Fix GCC warning with snprintf when HAX is enabled 2020-03-16 23:02:24 +01:00
hax-posix.h Clean up header guards that don't match their file name 2019-05-13 08:58:55 +02:00
hax-windows.c hax: Windows doesn't like posix device names 2020-04-14 10:37:42 -04:00
hax-windows.h hax: Support guest RAM sizes of 4GB or more 2018-02-13 11:44:13 +01:00
helper.c Fix wrong behavior of cpu_memory_rw_debug() function in SMM 2019-10-04 18:49:18 +02:00
helper.h target/i386: Implement CPUID_EXT_RDRAND 2019-05-22 12:38:54 -04:00
hyperv-proto.h i386/kvm: add NoNonArchitecturalCoreSharing Hyper-V enlightenment 2019-10-22 09:38:42 +02:00
hyperv-stub.c target/i386: fix feature check in hyperv-stub.c 2019-07-05 22:16:46 +02:00
hyperv.c i386/kvm: convert hyperv enlightenments properties from bools to bits 2019-06-21 02:29:38 +02:00
hyperv.h hyperv: qom-ify SynIC 2018-10-19 13:44:14 +02:00
int_helper.c target/i386: Implement CPUID_EXT_RDRAND 2019-05-22 12:38:54 -04:00
kvm_i386.h target/i386: kvm: initialize feature MSRs very early 2020-01-24 20:59:09 +01:00
kvm-stub.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
kvm.c kvm: i386: allow TSC to differ by NTP correction bounds without TSC scaling 2020-06-26 09:39:40 -04:00
machine.c Fix some comment spelling errors. 2019-12-18 02:34:11 +01:00
Makefile.objs target-i386: add kvm stubs to user-mode emulators 2019-03-11 16:33:49 +01:00
mem_helper.c tcg: Search includes from the project root source directory 2020-01-15 15:13:10 -10:00
misc_helper.c target/i386: Fix OUTL debug output 2020-06-10 12:09:35 -04:00
monitor.c hw: replace hw/i386/pc.h with a header just for the i8259 2019-12-17 19:33:49 +01:00
mpx_helper.c target/i386: move cpu_sync_bndcs_hflags() function 2017-07-05 09:12:44 +02:00
ops_sse_header.h target-i386: Use ctpop helper 2017-01-10 08:49:59 -08:00
ops_sse.h target/i386: correct fix for pcmpxstrx substring search 2020-06-12 11:10:39 -04:00
seg_helper.c target/i386: Use cpu_*_mmuidx_ra instead of templates 2020-01-15 15:13:10 -10:00
sev_i386.h target/i386: sev: Move local structure definitions into .c file 2020-06-12 11:20:13 -04:00
sev-stub.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
sev.c target/i386: sev: Unify SEVState and SevGuestState 2020-06-12 11:20:14 -04:00
shift_helper_template.h
smm_helper.c target/i386: Use env_cpu, env_archcpu 2019-06-10 07:03:42 -07:00
svm_helper.c target/i386: Use env_cpu, env_archcpu 2019-06-10 07:03:42 -07:00
svm.h target-i386: Add NPT support 2018-07-02 15:41:18 +02:00
trace-events trace-events: Shorten file names in comments 2019-03-22 16:18:07 +00:00
translate.c linux-user/i386: Emulate x86_64 vsyscalls 2020-03-26 08:08:54 +01:00
whp-dispatch.h WHPX: TSC get and set should be dependent on VM state 2020-03-16 23:02:21 +01:00
whpx-all.c WHPX: Use proper synchronization primitives while processing 2020-03-16 23:02:24 +01:00
xsave_helper.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00