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charset="utf-8" This option allows guest administrator specify what should happen when guest accesses an MSR which is not explicitly emulated by the hypervisor. Signed-off-by: Boris Ostrovsky --- docs/man/xl.cfg.5.pod.in | 20 +++++++++++++++++++- tools/libs/light/libxl_types.idl | 7 +++++++ tools/xl/xl_parse.c | 7 +++++++ 3 files changed, 33 insertions(+), 1 deletion(-) diff --git a/docs/man/xl.cfg.5.pod.in b/docs/man/xl.cfg.5.pod.in index c8e017f950de..96ce97c42cab 100644 --- a/docs/man/xl.cfg.5.pod.in +++ b/docs/man/xl.cfg.5.pod.in @@ -2044,7 +2044,25 @@ Do not provide a VM generation ID. See also "Virtual Machine Generation ID" by Microsoft: L =20 -=3Dback=20 +=3Dover + +=3Ditem B + +Determine hypervisor behavior on accesses to MSRs that are not emulated by= the hypervisor. + +=3Dover 4 + +=3Ditem B + +Issue a warning to the log and #GP to the guest. This is default. + +=3Ditem B + +MSR reads return 0, MSR writes are ignored. No warnings to the log. + +=3Ditem B + +Similar to B but a warning is written. =20 =3Dhead3 Guest Virtual Time Controls =20 diff --git a/tools/libs/light/libxl_types.idl b/tools/libs/light/libxl_type= s.idl index 05324736b744..7b5fef771ee8 100644 --- a/tools/libs/light/libxl_types.idl +++ b/tools/libs/light/libxl_types.idl @@ -477,6 +477,12 @@ libxl_tee_type =3D Enumeration("tee_type", [ (1, "optee") ], init_val =3D "LIBXL_TEE_TYPE_NONE") =20 +libxl_ignore_msrs =3D Enumeration("ignore_msrs", [ + (0, "never"), + (1, "silent"), + (2, "verbose"), + ], init_val =3D "LIBXL_IGNORE_MSRS_NEVER") + libxl_rdm_reserve =3D Struct("rdm_reserve", [ ("strategy", libxl_rdm_reserve_strategy), ("policy", libxl_rdm_reserve_policy), @@ -559,6 +565,7 @@ libxl_domain_build_info =3D Struct("domain_build_info",[ ("apic", libxl_defbool), ("dm_restrict", libxl_defbool), ("tee", libxl_tee_type), + ("ignore_msrs", libxl_ignore_msrs), ("u", KeyedUnion(None, libxl_domain_type, "type", [("hvm", Struct(None, [("firmware", string), ("bios", libxl_bios_typ= e), diff --git a/tools/xl/xl_parse.c b/tools/xl/xl_parse.c index 4ebf39620ae7..942086c3f41d 100644 --- a/tools/xl/xl_parse.c +++ b/tools/xl/xl_parse.c @@ -2732,6 +2732,13 @@ skip_usbdev: } } =20 + if (!xlu_cfg_get_string(config, "ignore_msrs", &buf, 0)) { + if (libxl_ignore_msrs_from_string(buf, &b_info->ignore_msrs)) { + fprintf(stderr, "ERROR: invalid value \"%s\" for \"ignore_msrs\= "\n", buf); + exit(1); + } + } + parse_vkb_list(config, d_config); =20 xlu_cfg_get_defbool(config, "xend_suspend_evtchn_compat", --=20 1.8.3.1