Jan Beulich 8eed56995d x86emul: ignore VEX.W for BMI{1,2} insns in 32-bit mode ...

While result values and other status flags are unaffected as long as we
can ignore the case of registers having their upper 32 bits non-zero
outside of 64-bit mode, EFLAGS.SF may obtain a wrong value when we
mistakenly re-execute the original insn with VEX.W set.

Note that guest the memory access, if any, is correctly carried out as
32-bit regardless of VEX.W. The emulator-local memory operand will be
accessed as a 64-bit quantity, but it is pre-initialised to zero so no
internal state can leak.

Fixes: 771daacd19 ("x86emul: support BMI1 insns")
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
master commit: 1179d51dcb
master date: 2024-11-14 13:00:57 +0100

2024-11-25 12:17:49 +01:00

..

console

tools/console: Add escape argument to configure escape character

2023-07-27 09:47:33 +02:00

debugger

tools: Use new xc function for some xc_domain_getinfo() calls

2023-05-10 19:59:27 +01:00

examples

tools/examples: cleanup Makefile

2022-07-11 12:13:24 +02:00

firmware

hvmloader/PCI: skip huge BARs in certain calculations

2024-03-12 12:06:57 +01:00

flask

xen/xsm: Wire up get_dom0_console

2024-05-21 10:19:43 +02:00

fuzz

x86emul: rework wrapping of libc functions in test and fuzzing harnesses

2023-08-18 15:04:28 +02:00

golang

golang: Fix bindings after XSA-443

2023-11-07 09:59:06 +00:00

helpers

tools: Make init-xenstore-domain use xc_domain_getinfolist()

2023-04-28 14:34:40 +01:00

hotplug

block-common: Fix same_vm for no targets

2024-02-27 13:55:03 +01:00

include

tools: Import stand-alone sd_notify() implementation from systemd

2024-07-04 14:10:10 +02:00

libacpi

LICENSES: Remove the use of deprecated SPDX tags

2023-05-09 10:37:29 +01:00

libfsimage

tools/libfsimage: Export a new function to preload all plugins

2023-10-11 06:36:50 +01:00

libs

tools/libxs: Stop playing with SIGPIPE

2024-11-25 12:11:04 +01:00

misc

tools/misc: xen-hvmcrash: Inject #DF instead of overwriting RIP

2024-11-25 12:09:37 +01:00

ocaml

tools/ocaml: Fix the version embedded in META files

2024-11-25 12:13:47 +01:00

pygrub

tools/pygrub: Fix pygrub's --entry flag for python3

2023-10-18 15:44:31 +01:00

python

tools/python: convert setup.py to use setuptools if available

2023-09-20 20:53:58 +01:00

tests

x86emul: ignore VEX.W for BMI{1,2} insns in 32-bit mode

2024-11-25 12:17:49 +01:00

vchan

tools: Use new xc function for some xc_domain_getinfo() calls

2023-05-10 19:59:27 +01:00

xcutils

tools/lsevtchn: Use errno macro to handle hypercall error cases

2024-08-08 13:53:26 +02:00

xenmon

tools: Make some callers of xc_domain_getinfo() use xc_domain_getinfolist()

2023-04-28 14:34:40 +01:00

xenpaging

tools: Modify single-domid callers of xc_domain_getinfolist()

2023-05-10 19:59:27 +01:00

xenpmd

tools: Remove -Werror everywhere else

2022-10-14 16:17:41 +01:00

xenstored

tools/{c,o}xenstored: Don't link against libsystemd

2024-07-04 14:10:29 +02:00

xentop

tools/xentop: Fix cpu% sort order

2024-05-21 10:25:30 +02:00

xentrace

xenalyze: Reduce warnings about leaving a vcpu in INIT

2023-10-16 15:01:52 +01:00

xl

xl: fix incorrect output in "help" command

2024-09-24 14:52:42 +02:00

xs-clients

tools/xenstore: move xenstored sources into dedicated directory

2023-08-23 19:10:37 +01:00

config.h.in

tools/libxs: Fix CLOEXEC handling in xs_fileno()

2024-07-04 14:13:30 +02:00

configure

tools/libxs: Fix CLOEXEC handling in xs_fileno()

2024-07-04 14:13:30 +02:00

configure.ac

tools/libxs: Fix CLOEXEC handling in xs_fileno()

2024-07-04 14:13:30 +02:00

cross-install

…

Makefile

tools/xenstore: move xenstored sources into dedicated directory

2023-08-23 19:10:37 +01:00

Rules.mk

Turn off debug by default

2023-10-27 14:08:16 +01:00