From: Yanan Wang <wangyanan55@huawei.com>
To: Peter Maydell <peter.maydell@linaro.org>,
Andrew Jones <drjones@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>,
"Michael S . Tsirkin" <mst@redhat.com>,
Igor Mammedov <imammedo@redhat.com>,
Shannon Zhao <shannon.zhaosl@gmail.com>,
Alistair Francis <alistair.francis@wdc.com>,
David Gibson <david@gibson.dropbear.id.au>,
<qemu-devel@nongnu.org>, <qemu-arm@nongnu.org>
Cc: Barry Song <song.bao.hua@hisilicon.com>,
Yanan Wang <wangyanan55@huawei.com>,
prime.zeng@hisilicon.com, wanghaibin.wang@huawei.com,
yuzenghui@huawei.com, yangyicong@huawei.com,
zhukeqian1@huawei.com
Subject: [RFC PATCH v4 3/7] machine: disallow -smp expose=on for non-ARM machines
Date: Tue, 22 Jun 2021 17:34:09 +0800 [thread overview]
Message-ID: <20210622093413.13360-4-wangyanan55@huawei.com> (raw)
In-Reply-To: <20210622093413.13360-1-wangyanan55@huawei.com>
Currently, support for exposure of cpu topology to the guest
is only introduced for ARM machines and we also have an ARM
specific parsing function virt_smp_parse(), so we disallow
the "-smp expose=on" configuration for the other platforms.
Signed-off-by: Yanan Wang <wangyanan55@huawei.com>
---
hw/core/machine.c | 7 +++++++
hw/i386/pc.c | 7 +++++++
2 files changed, 14 insertions(+)
diff --git a/hw/core/machine.c b/hw/core/machine.c
index 55b9bc7817..23721bb77e 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -746,6 +746,13 @@ static void smp_parse(MachineState *ms, QemuOpts *opts)
unsigned sockets = qemu_opt_get_number(opts, "sockets", 0);
unsigned cores = qemu_opt_get_number(opts, "cores", 0);
unsigned threads = qemu_opt_get_number(opts, "threads", 0);
+ bool expose = qemu_opt_get_bool(opts, "expose", false);
+
+ if (expose) {
+ error_report("expose=on: exposing cpu topology to the guest"
+ "is not supported yet");
+ exit(1);
+ }
/* compute missing values, prefer sockets over cores over threads */
if (cpus == 0 || sockets == 0) {
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index c6d8d0d84d..afabfa0566 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -720,6 +720,13 @@ void pc_smp_parse(MachineState *ms, QemuOpts *opts)
unsigned dies = qemu_opt_get_number(opts, "dies", 1);
unsigned cores = qemu_opt_get_number(opts, "cores", 0);
unsigned threads = qemu_opt_get_number(opts, "threads", 0);
+ bool expose = qemu_opt_get_bool(opts, "expose", false);
+
+ if (expose) {
+ error_report("expose=on: exposing cpu topology to the guest"
+ "is not supported yet");
+ exit(1);
+ }
/* compute missing values, prefer sockets over cores over threads */
if (cpus == 0 || sockets == 0) {
--
2.23.0
next prev parent reply other threads:[~2021-06-22 9:39 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-22 9:34 [RFC PATCH v4 0/7] hw/arm/virt: Introduce cpu topology support Yanan Wang
2021-06-22 9:34 ` [RFC PATCH v4 1/7] vl: Add expose=on|off option support in -smp command line Yanan Wang
2021-06-22 9:34 ` [RFC PATCH v4 2/7] hw/arm/virt: Add separate -smp parsing function for ARM machines Yanan Wang
2021-06-22 9:34 ` Yanan Wang [this message]
2021-06-22 9:34 ` [RFC PATCH v4 4/7] device_tree: Add qemu_fdt_add_path Yanan Wang
2021-06-22 9:34 ` [RFC PATCH v4 5/7] hw/arm/virt: Add cpu-map to device tree Yanan Wang
2021-06-22 9:34 ` [RFC PATCH v4 6/7] hw/acpi/aml-build: Add Processor hierarchy node structure Yanan Wang
2021-06-22 9:34 ` [RFC PATCH v4 7/7] hw/acpi/aml-build: Generate PPTT table Yanan Wang
2021-06-22 10:18 ` [RFC PATCH v4 0/7] hw/arm/virt: Introduce cpu topology support Daniel P. Berrangé
2021-06-22 11:46 ` Andrew Jones
2021-06-22 12:31 ` wangyanan (Y)
2021-06-22 12:41 ` Daniel P. Berrangé
2021-06-22 14:04 ` wangyanan (Y)
2021-06-22 14:10 ` Daniel P. Berrangé
2021-06-22 14:15 ` Peter Maydell
2021-06-22 14:28 ` Daniel P. Berrangé
2021-06-28 11:14 ` wangyanan (Y)
2021-06-28 11:31 ` Daniel P. Berrangé
2021-06-28 11:53 ` wangyanan (Y)
2021-06-22 14:29 ` Andrew Jones
2021-06-22 15:15 ` Daniel P. Berrangé
2021-06-22 15:40 ` Igor Mammedov
2021-06-22 17:08 ` Andrew Jones
2021-06-22 17:14 ` Daniel P. Berrangé
2021-06-22 17:29 ` Andrew Jones
2021-06-22 17:39 ` Daniel P. Berrangé
2021-06-28 8:43 ` wangyanan (Y)
2021-06-28 8:58 ` Andrew Jones
2021-06-28 10:48 ` wangyanan (Y)
2021-06-30 6:36 ` wangyanan (Y)
2021-06-30 8:30 ` Andrew Jones
2021-06-30 9:37 ` wangyanan (Y)
2021-06-30 11:56 ` Andrew Jones
2021-07-01 6:15 ` wangyanan (Y)
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