From: Roger Pau Monne <roger.pau@citrix.com>
To: <xen-devel@lists.xenproject.org>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>,
Roger Pau Monne <roger.pau@citrix.com>,
Ian Jackson <iwj@xenproject.org>, Wei Liu <wl@xen.org>,
Anthony PERARD <anthony.perard@citrix.com>,
Jan Beulich <jbeulich@suse.com>
Subject: [PATCH v3 01/13] libxl: don't ignore the return value from xc_cpuid_apply_policy
Date: Fri, 30 Apr 2021 17:51:59 +0200 [thread overview]
Message-ID: <20210430155211.3709-2-roger.pau@citrix.com> (raw)
In-Reply-To: <20210430155211.3709-1-roger.pau@citrix.com>
Also change libxl__cpuid_legacy to propagate the error from
xc_cpuid_apply_policy into callers.
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
---
Changes since v2:
- Use 'r' for xc_cpuid_apply_policy return value.
- Use LOGEVD to print error message.
Changes since v1:
- Return ERROR_FAIL on error.
---
tools/libs/light/libxl_cpuid.c | 15 +++++++++++----
tools/libs/light/libxl_create.c | 5 +++--
tools/libs/light/libxl_dom.c | 2 +-
tools/libs/light/libxl_internal.h | 4 ++--
tools/libs/light/libxl_nocpuid.c | 5 +++--
5 files changed, 20 insertions(+), 11 deletions(-)
diff --git a/tools/libs/light/libxl_cpuid.c b/tools/libs/light/libxl_cpuid.c
index f32c5d3a6f6..eb6feaa96d1 100644
--- a/tools/libs/light/libxl_cpuid.c
+++ b/tools/libs/light/libxl_cpuid.c
@@ -426,11 +426,13 @@ int libxl_cpuid_parse_config_xend(libxl_cpuid_policy_list *cpuid,
return 0;
}
-void libxl__cpuid_legacy(libxl_ctx *ctx, uint32_t domid, bool restore,
- libxl_domain_build_info *info)
+int libxl__cpuid_legacy(libxl_ctx *ctx, uint32_t domid, bool restore,
+ libxl_domain_build_info *info)
{
+ GC_INIT(ctx);
bool pae = true;
bool itsc;
+ int r;
/*
* Gross hack. Using libxl_defbool_val() here causes libvirt to crash in
@@ -469,8 +471,13 @@ void libxl__cpuid_legacy(libxl_ctx *ctx, uint32_t domid, bool restore,
itsc = (libxl_defbool_val(info->disable_migrate) ||
info->tsc_mode == LIBXL_TSC_MODE_ALWAYS_EMULATE);
- xc_cpuid_apply_policy(ctx->xch, domid, restore, NULL, 0,
- pae, itsc, nested_virt, info->cpuid);
+ r = xc_cpuid_apply_policy(ctx->xch, domid, restore, NULL, 0,
+ pae, itsc, nested_virt, info->cpuid);
+ if (r)
+ LOGEVD(ERROR, -r, domid, "Failed to apply CPUID policy");
+
+ GC_FREE;
+ return r ? ERROR_FAIL : 0;
}
static const char *input_names[2] = { "leaf", "subleaf" };
diff --git a/tools/libs/light/libxl_create.c b/tools/libs/light/libxl_create.c
index 43e9ba9c634..e356b2106d4 100644
--- a/tools/libs/light/libxl_create.c
+++ b/tools/libs/light/libxl_create.c
@@ -1434,6 +1434,7 @@ int libxl__srm_callout_callback_static_data_done(unsigned int missing,
libxl_domain_config *d_config = dcs->guest_config;
libxl_domain_build_info *info = &d_config->b_info;
+ int rc = 0;
/*
* CPUID/MSR information is not present in pre Xen-4.14 streams.
@@ -1443,9 +1444,9 @@ int libxl__srm_callout_callback_static_data_done(unsigned int missing,
* stream doesn't contain any CPUID data.
*/
if (missing & XGR_SDD_MISSING_CPUID)
- libxl__cpuid_legacy(ctx, dcs->guest_domid, true, info);
+ rc = libxl__cpuid_legacy(ctx, dcs->guest_domid, true, info);
- return 0;
+ return rc;
}
void libxl__srm_callout_callback_restore_results(xen_pfn_t store_mfn,
diff --git a/tools/libs/light/libxl_dom.c b/tools/libs/light/libxl_dom.c
index 842a51c86cb..e9f58ee4b2b 100644
--- a/tools/libs/light/libxl_dom.c
+++ b/tools/libs/light/libxl_dom.c
@@ -384,7 +384,7 @@ int libxl__build_pre(libxl__gc *gc, uint32_t domid,
* being migrated-in/restored have CPUID handled during the
* static_data_done() callback. */
if (!state->restore)
- libxl__cpuid_legacy(ctx, domid, false, info);
+ rc = libxl__cpuid_legacy(ctx, domid, false, info);
return rc;
}
diff --git a/tools/libs/light/libxl_internal.h b/tools/libs/light/libxl_internal.h
index c6a4a187f5b..44a2f3c8fe3 100644
--- a/tools/libs/light/libxl_internal.h
+++ b/tools/libs/light/libxl_internal.h
@@ -2052,8 +2052,8 @@ typedef yajl_gen_status (*libxl__gen_json_callback)(yajl_gen hand, void *);
_hidden char *libxl__object_to_json(libxl_ctx *ctx, const char *type,
libxl__gen_json_callback gen, void *p);
-_hidden void libxl__cpuid_legacy(libxl_ctx *ctx, uint32_t domid, bool retore,
- libxl_domain_build_info *info);
+_hidden int libxl__cpuid_legacy(libxl_ctx *ctx, uint32_t domid, bool retore,
+ libxl_domain_build_info *info);
/* Calls poll() again - useful to check whether a signaled condition
* is still true. Cannot fail. Returns currently-true revents. */
diff --git a/tools/libs/light/libxl_nocpuid.c b/tools/libs/light/libxl_nocpuid.c
index f47336565b9..0630959e760 100644
--- a/tools/libs/light/libxl_nocpuid.c
+++ b/tools/libs/light/libxl_nocpuid.c
@@ -34,9 +34,10 @@ int libxl_cpuid_parse_config_xend(libxl_cpuid_policy_list *cpuid,
return 0;
}
-void libxl__cpuid_legacy(libxl_ctx *ctx, uint32_t domid, bool restore,
- libxl_domain_build_info *info)
+int libxl__cpuid_legacy(libxl_ctx *ctx, uint32_t domid, bool restore,
+ libxl_domain_build_info *info)
{
+ return 0;
}
yajl_gen_status libxl_cpuid_policy_list_gen_json(yajl_gen hand,
--
2.31.1
next prev parent reply other threads:[~2021-04-30 15:54 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-30 15:51 [PATCH v3 00/13] libs/guest: new CPUID/MSR interface Roger Pau Monne
2021-04-30 15:51 ` Roger Pau Monne [this message]
2021-05-04 14:07 ` [PATCH v3 01/13] libxl: don't ignore the return value from xc_cpuid_apply_policy Anthony PERARD
2021-04-30 15:52 ` [PATCH v3 02/13] libs/guest: allow fetching a specific CPUID leaf from a cpu policy Roger Pau Monne
2021-05-04 11:59 ` Andrew Cooper
2021-05-04 13:47 ` Roger Pau Monné
2021-05-04 15:46 ` Andrew Cooper
2021-04-30 15:52 ` [PATCH v3 03/13] libs/guest: allow fetching a specific MSR entry " Roger Pau Monne
2021-05-03 10:41 ` Jan Beulich
2021-05-04 10:56 ` Roger Pau Monné
2021-05-04 11:40 ` Jan Beulich
2021-05-04 11:58 ` Roger Pau Monné
2021-05-04 17:11 ` Andrew Cooper
2021-05-05 7:38 ` Jan Beulich
2021-04-30 15:52 ` [PATCH v3 04/13] libs/guest: allow updating a cpu policy CPUID data Roger Pau Monne
2021-05-04 16:19 ` Andrew Cooper
2021-04-30 15:52 ` [PATCH v3 05/13] libs/guest: allow updating a cpu policy MSR data Roger Pau Monne
2021-05-04 16:20 ` Andrew Cooper
2021-04-30 15:52 ` [PATCH v3 06/13] libs/guest: introduce helper to check cpu policy compatibility Roger Pau Monne
2021-05-04 16:27 ` Andrew Cooper
2021-04-30 15:52 ` [PATCH v3 07/13] libs/guest: obtain a compatible cpu policy from two input ones Roger Pau Monne
2021-05-03 10:43 ` Jan Beulich
2021-05-04 11:56 ` Roger Pau Monné
2021-05-04 12:12 ` Jan Beulich
2021-05-04 16:50 ` Andrew Cooper
2021-04-30 15:52 ` [PATCH v3 08/13] libs/guest: make a cpu policy compatible with older Xen versions Roger Pau Monne
2021-05-03 11:09 ` Jan Beulich
2021-05-04 15:34 ` Roger Pau Monné
2021-05-05 7:42 ` Jan Beulich
2021-05-06 10:23 ` Roger Pau Monné
2021-05-06 10:52 ` Jan Beulich
2021-04-30 15:52 ` [PATCH v3 09/13] libs/guest: introduce helper set cpu topology in cpu policy Roger Pau Monne
2021-04-30 15:52 ` [PATCH v3 10/13] libs/guest: rework xc_cpuid_xend_policy Roger Pau Monne
2021-04-30 15:52 ` [PATCH v3 11/13] libs/guest: apply a featureset into a cpu policy Roger Pau Monne
2021-04-30 15:52 ` [PATCH v3 12/13] libs/{light,guest}: implement xc_cpuid_apply_policy in libxl Roger Pau Monne
2021-05-04 14:08 ` Anthony PERARD
2021-04-30 15:52 ` [PATCH v3 13/13] libs/guest: (re)move xc_cpu_policy_apply_cpuid Roger Pau Monne
2021-05-04 14:08 ` Anthony PERARD
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