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b4e1af8961
qemu/target/i386
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Roman Bolshakov b4e1af8961 i386: hvf: Fix register refs if REX is present 
According to Intel(R)64 and IA-32 Architectures Software Developer's
Manual, the following one-byte registers should be fetched when REX
prefix is present (sorted by reg encoding index):
AL, CL, DL, BL, SPL, BPL, SIL, DIL, R8L - R15L

The first 8 are fetched if REX.R is zero, the last 8 if non-zero.

The following registers should be fetched for instructions without REX
prefix (also sorted by reg encoding index):
AL, CL, DL, BL, AH, CH, DH, BH

Current emulation code doesn't handle accesses to SPL, BPL, SIL, DIL
when REX is present, thefore an instruction 40883e "mov %dil,(%rsi)" is
decoded as "mov %bh,(%rsi)".

That caused an infinite loop in vp_reset:
https://lists.gnu.org/archive/html/qemu-devel/2018-10/msg03293.html

Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com>
Message-Id: <20181018134401.44471-1-r.bolshakov@yadro.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-10-19 13:44:12 +02:00
..
hvf i386: hvf: Fix register refs if REX is present 2018-10-19 13:44:12 +02:00
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: Fix eflags.TF/#DB handling of syscall/sysret insns 2016-12-22 16:01:04 +01:00
cc_helper_template.h
cc_helper.c target-i386: Use ctpop helper 2017-01-10 08:49:59 -08:00
cpu-qom.h i386: refactor KVM cpuid code so that it applies to hvf as well 2017-12-22 15:01:48 +01:00
cpu.c i386/kvm: add support for Hyper-V IPI send 2018-10-19 13:44:12 +02:00
cpu.h i386/kvm: add support for Hyper-V IPI send 2018-10-19 13:44:12 +02:00
excp_helper.c target/i386: rename HF_SVMI_MASK to HF_GUEST_MASK 2018-10-02 19:09:12 +02:00
fpu_helper.c target/*/cpu.h: remove softfloat.h 2018-02-21 10:20:24 +00:00
gdbstub.c x86: Fix x86_64 'g' packet response to gdb from 32-bit mode. 2016-12-22 16:00:25 +01:00
hax-all.c target: Do not include "exec/exec-all.h" if it is not necessary 2018-06-01 14:15:10 +02:00
hax-darwin.c Remove unnecessary variables for function return value 2018-05-20 08:48:13 +03:00
hax-darwin.h hax: Support guest RAM sizes of 4GB or more 2018-02-13 11:44:13 +01:00
hax-i386.h hax: Support guest RAM sizes of 4GB or more 2018-02-13 11:44:13 +01:00
hax-interface.h hax: Support guest RAM sizes of 4GB or more 2018-02-13 11:44:13 +01:00
hax-mem.c target: Do not include "exec/exec-all.h" if it is not necessary 2018-06-01 14:15:10 +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 icount: fix cpu_restore_state_from_tb for non-tb-exit cases 2018-04-11 09:05:22 +10:00
helper.h target-i386: correctly propagate retaddr into SVM helpers 2017-02-16 18:37:01 +01:00
hyperv-proto.h i386/kvm: add support for Hyper-V IPI send 2018-10-19 13:44:12 +02:00
hyperv.c hyperv: ensure VP index equal to QEMU cpu_index 2018-07-16 16:58:16 +02:00
hyperv.h hyperv: ensure VP index equal to QEMU cpu_index 2018-07-16 16:58:16 +02:00
int_helper.c target-i386: Use clz and ctz opcodes 2017-01-10 08:06:11 -08:00
kvm_i386.h hyperv: ensure VP index equal to QEMU cpu_index 2018-07-16 16:58:16 +02:00
kvm-stub.c hyperv: ensure VP index equal to QEMU cpu_index 2018-07-16 16:58:16 +02:00
kvm.c i386/kvm: add support for Hyper-V IPI send 2018-10-19 13:44:12 +02:00
machine.c i386: do not migrate MSR_SMI_COUNT on machine types <2.12 2018-07-30 14:00:11 +02:00
Makefile.objs sev/i386: add command to initialize the memory encryption context 2018-03-13 17:35:16 +01:00
mem_helper.c target-i386: Add NPT support 2018-07-02 15:41:18 +02:00
misc_helper.c i386: implement MSR_SMI_COUNT for TCG 2018-07-30 14:00:11 +02:00
monitor.c i386/monitor.c: make addresses canonical for "info mem" and "info tlb" 2018-07-02 15:41:18 +02:00
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: fix phminposuw in-place operation 2017-09-19 14:09:11 +02:00
seg_helper.c target/i386: rename HF_SVMI_MASK to HF_GUEST_MASK 2018-10-02 19:09:12 +02:00
sev_i386.h sev/i386: add sev_get_capabilities() 2018-03-13 17:36:06 +01:00
sev-stub.c sev/i386: add sev_get_capabilities() 2018-03-13 17:36:06 +01:00
sev.c target/i386: sev: fix memory leaks 2018-05-09 00:13:39 +02:00
shift_helper_template.h
smm_helper.c i386: implement MSR_SMI_COUNT for TCG 2018-07-30 14:00:11 +02:00
svm_helper.c target/i386: rename HF_SVMI_MASK to HF_GUEST_MASK 2018-10-02 19:09:12 +02:00
svm.h target-i386: Add NPT support 2018-07-02 15:41:18 +02:00
TODO
trace-events sev/i386: finalize the SEV guest launch flow 2018-03-13 17:36:05 +01:00
translate.c target/i386: fix translation for icount mode 2018-10-02 19:09:13 +02:00
whp-dispatch.h whpx: commit missing file 2018-06-28 19:05:31 +02:00
whpx-all.c WHPX: register for unrecognized MSR exits 2018-06-28 19:05:36 +02:00
xsave_helper.c Include qapi/error.h exactly where needed 2018-02-09 13:50:17 +01:00