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RE: [PATCH v6 5/5] xen/acpi: Parse PPTT to initialize CPU topology
- To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Hirokazu Takahashi <taka@xxxxxxxxxxxxx>
- Date: Tue, 14 Jul 2026 21:25:46 +0000
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- Cc: "Mykyta_Poturai@xxxxxxxx" <Mykyta_Poturai@xxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Delivery-date: Tue, 14 Jul 2026 21:26:11 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Thread-index: AQHdE336EabuJxSEHUSo4bExE1f467ZthrLg
- Thread-topic: [PATCH v6 5/5] xen/acpi: Parse PPTT to initialize CPU topology
Hello,
> diff --git a/xen/drivers/acpi/topology.c b/xen/drivers/acpi/topology.c
> index 56fcfa4945..e6dea527a6 100644
> --- a/xen/drivers/acpi/topology.c
> +++ b/xen/drivers/acpi/topology.c
> int __init acpi_init_cpu_topology(void)
> {
> + acpi_status status;
> + struct acpi_table_header *table_header;
> + const struct acpi_table_pptt *pptt;
> + unsigned int num_sockets = 0;
> + unsigned int num_clusters = 0;
> + unsigned int num_cores = 0;
> + unsigned int *socket_map = xmalloc_array(unsigned int, nr_cpu_ids);
> + unsigned int *cluster_map = xmalloc_array(unsigned int, nr_cpu_ids);
> + unsigned int *core_map = xmalloc_array(unsigned int, nr_cpu_ids);
These have to be xzmalloc_array().
I will fix it in v7.
Thank you,
Hirokazu Takahashi.
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