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qemu/target/i386
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Bingsong Si 76ecd7a514 i386: Fix legacy guest with xsave panic on host kvm without update cpuid. 
without kvm commit 412a3c41, CPUID(EAX=0xd,ECX=0).EBX always equal to 0 even
through guest update xcr0, this will crash legacy guest(e.g., CentOS 6).
Below is the call trace on the guest.

[    0.000000] kernel BUG at mm/bootmem.c:469!
[    0.000000] invalid opcode: 0000 [#1] SMP
[    0.000000] last sysfs file:
[    0.000000] CPU 0
[    0.000000] Modules linked in:
[    0.000000]
[    0.000000] Pid: 0, comm: swapper Tainted: G           --------------- H  2.6.32-279#2 Red Hat KVM
[    0.000000] RIP: 0010:[<ffffffff81c4edc4>]  [<ffffffff81c4edc4>] alloc_bootmem_core+0x7b/0x29e
[    0.000000] RSP: 0018:ffffffff81a01cd8  EFLAGS: 00010046
[    0.000000] RAX: ffffffff81cb1748 RBX: ffffffff81cb1720 RCX: 0000000001000000
[    0.000000] RDX: 0000000000000040 RSI: 0000000000000000 RDI: ffffffff81cb1720
[    0.000000] RBP: ffffffff81a01d38 R08: 0000000000000000 R09: 0000000000001000
[    0.000000] R10: 02008921da802087 R11: 00000000ffff8800 R12: 0000000000000000
[    0.000000] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000001000000
[    0.000000] FS:  0000000000000000(0000) GS:ffff880002200000(0000) knlGS:0000000000000000
[    0.000000] CS:  0010 DS: 0018 ES: 0018 CR0: 0000000080050033
[    0.000000] CR2: 0000000000000000 CR3: 0000000001a85000 CR4: 00000000001406b0
[    0.000000] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    0.000000] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[    0.000000] Process swapper (pid: 0, threadinfo ffffffff81a00000, task ffffffff81a8d020)
[    0.000000] Stack:
[    0.000000]  0000000000000002 81a01dd881eaf060 000000007e5fe227 0000000000001001
[    0.000000] <d> 0000000000000040 0000000000000001 0000006cffffffff 0000000001000000
[    0.000000] <d> ffffffff81cb1720 0000000000000000 0000000000000000 0000000000000000
[    0.000000] Call Trace:
[    0.000000]  [<ffffffff81c4f074>] ___alloc_bootmem_nopanic+0x8d/0xca
[    0.000000]  [<ffffffff81c4f0cf>] ___alloc_bootmem+0x11/0x39
[    0.000000]  [<ffffffff81c4f172>] __alloc_bootmem+0xb/0xd
[    0.000000]  [<ffffffff814d42d9>] xsave_cntxt_init+0x249/0x2c0
[    0.000000]  [<ffffffff814e0689>] init_thread_xstate+0x17/0x25
[    0.000000]  [<ffffffff814e0710>] fpu_init+0x79/0xaa
[    0.000000]  [<ffffffff814e27e3>] cpu_init+0x301/0x344
[    0.000000]  [<ffffffff81276395>] ? sort+0x155/0x230
[    0.000000]  [<ffffffff81c30cf2>] trap_init+0x24e/0x25f
[    0.000000]  [<ffffffff81c2bd73>] start_kernel+0x21c/0x430
[    0.000000]  [<ffffffff81c2b33a>] x86_64_start_reservations+0x125/0x129
[    0.000000]  [<ffffffff81c2b438>] x86_64_start_kernel+0xfa/0x109
[    0.000000] Code: 03 48 89 f1 49 c1 e8 0c 48 0f af d0 48 c7 c6 00 a6 61 81 48 c7 c7 00 e5 79 81 31 c0 4c 89 74 24 08 e8 f2 d7 89 ff 4d 85 e4 75 04 <0f> 0b eb fe 48 8b 45 c0 48 83 e8 01 48 85 45
c0 74 04 0f 0b eb

Signed-off-by: Bingsong Si <owen.si@ucloud.cn>
Message-Id: <20190822042901.16858-1-owen.si@ucloud.cn>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2019-10-15 18:34:44 -03:00
..
hvf target/i386: drop the duplicated definition of cpuid AVX512_VBMI macro 2019-10-15 18:34:44 -03:00
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.c target-i386: Use ctpop helper 2017-01-10 08:49:59 -08:00
cc_helper_template.h Move target-* CPU file into a target/ folder 2016-12-20 21:52:12 +01:00
cpu-param.h tcg: Split out target/arch/cpu-param.h 2019-06-10 07:03:34 -07:00
cpu-qom.h hw/core: Move cpu.c, cpu.h from qom/ to hw/core/ 2019-08-21 13:24:01 +02:00
cpu.c i386: Fix legacy guest with xsave panic on host kvm without update cpuid. 2019-10-15 18:34:44 -03:00
cpu.h target/i386: drop the duplicated definition of cpuid AVX512_VBMI macro 2019-10-15 18:34:44 -03:00
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: Use env_cpu, env_archcpu 2019-06-10 07:03:42 -07:00
gdbstub.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
hax-all.c sysemu: Split sysemu/runstate.h off sysemu/sysemu.h 2019-08-16 13:37:36 +02:00
hax-i386.h Clean up ill-advised or unusual header guards 2019-05-13 08:58:55 +02:00
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 hax: Support for Linux hosts 2019-01-11 13:57:24 +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 target: Do not include "exec/exec-all.h" if it is not necessary 2018-06-01 14:15:10 +02:00
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 support for Direct Mode for Hyper-V synthetic timers 2019-06-21 02:29:39 +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-stub.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
kvm.c target/i386/kvm: Silence warning from Valgrind about uninitialized bytes 2019-10-04 18:49:20 +02:00
kvm_i386.h target/i386: kvm: Demand nested migration kernel capabilities only when vCPU may have enabled VMX 2019-07-19 18:01:47 +02:00
machine.c kvm: i386: halt poll control MSR support 2019-08-20 17:26:17 +02:00
Makefile.objs target-i386: add kvm stubs to user-mode emulators 2019-03-11 16:33:49 +01:00
mem_helper.c cpu: Replace ENV_GET_CPU with env_cpu 2019-06-10 07:03:34 -07:00
misc_helper.c target/i386: Use env_cpu, env_archcpu 2019-06-10 07:03:42 -07:00
monitor.c Include generated QAPI headers less 2019-08-16 13:31:51 +02:00
mpx_helper.c target/i386: move cpu_sync_bndcs_hflags() function 2017-07-05 09:12:44 +02:00
ops_sse.h target/i386: Return 'indefinite integer value' for invalid SSE fp->int conversions 2019-08-20 17:26:20 +02:00
ops_sse_header.h target-i386: Use ctpop helper 2017-01-10 08:49:59 -08:00
seg_helper.c target/i386: Use env_cpu, env_archcpu 2019-06-10 07:03:42 -07:00
sev-stub.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
sev.c sysemu: Split sysemu/runstate.h off sysemu/sysemu.h 2019-08-16 13:37:36 +02:00
sev_i386.h Include generated QAPI headers less 2019-08-16 13:31:51 +02:00
shift_helper_template.h Move target-* CPU file into a target/ folder 2016-12-20 21:52:12 +01:00
smm_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
svm_helper.c target/i386: Use env_cpu, env_archcpu 2019-06-10 07:03:42 -07:00
TODO Move target-* CPU file into a target/ folder 2016-12-20 21:52:12 +01:00
trace-events trace-events: Shorten file names in comments 2019-03-22 16:18:07 +00:00
translate.c tcg: TCGMemOp is now accelerator independent MemOp 2019-09-03 08:30:38 -07:00
whp-dispatch.h Normalize position of header guard 2019-06-12 13:20:20 +02:00
whpx-all.c target/i386: Fix broken build with WHPX enabled 2019-09-26 19:00:53 +01:00
xsave_helper.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00