The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x bbb320bfe2c3e9740fe89cfa0a7089b4e8bfc4ff # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2023052848-preset-slapping-3df7@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^..

Possible dependencies:

bbb320bfe2c3 ("platform/x86: ISST: Remove 8 socket limit") 9a1aac8a96dc ("platform/x86: ISST: PUNIT device mapping with Sub-NUMA clustering")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From bbb320bfe2c3e9740fe89cfa0a7089b4e8bfc4ff Mon Sep 17 00:00:00 2001 From: Steve Wahl steve.wahl@hpe.com Date: Fri, 19 May 2023 11:04:20 -0500 Subject: [PATCH] platform/x86: ISST: Remove 8 socket limit MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit

Stop restricting the PCI search to a range of PCI domains fed to pci_get_domain_bus_and_slot(). Instead, use for_each_pci_dev() and look at all PCI domains in one pass.

On systems with more than 8 sockets, this avoids error messages like "Information: Invalid level, Can't get TDP control information at specified levels on cpu 480" from the intel speed select utility.

Fixes: aa2ddd242572 ("platform/x86: ISST: Use numa node id for cpu pci dev mapping") Signed-off-by: Steve Wahl steve.wahl@hpe.com Reviewed-by: Ilpo Järvinen ilpo.jarvinen@linux.intel.com Link: https://lore.kernel.org/r/20230519160420.2588475-1-steve.wahl@hpe.com Signed-off-by: Hans de Goede hdegoede@redhat.com

diff --git a/drivers/platform/x86/intel/speed_select_if/isst_if_common.c b/drivers/platform/x86/intel/speed_select_if/isst_if_common.c index e0572a29212e..02fe360a59c7 100644 --- a/drivers/platform/x86/intel/speed_select_if/isst_if_common.c +++ b/drivers/platform/x86/intel/speed_select_if/isst_if_common.c @@ -304,14 +304,13 @@ struct isst_if_pkg_info { static struct isst_if_cpu_info *isst_cpu_info; static struct isst_if_pkg_info *isst_pkg_info;

-#define ISST_MAX_PCI_DOMAINS 8 - static struct pci_dev *_isst_if_get_pci_dev(int cpu, int bus_no, int dev, int fn) { struct pci_dev *matched_pci_dev = NULL; struct pci_dev *pci_dev = NULL; + struct pci_dev *_pci_dev = NULL; int no_matches = 0, pkg_id; - int i, bus_number; + int bus_number;

if (bus_no < 0 || bus_no >= ISST_MAX_BUS_NUMBER || cpu < 0 || cpu >= nr_cpu_ids || cpu >= num_possible_cpus()) @@ -323,12 +322,11 @@ static struct pci_dev *_isst_if_get_pci_dev(int cpu, int bus_no, int dev, int fn if (bus_number < 0) return NULL;

- for (i = 0; i < ISST_MAX_PCI_DOMAINS; ++i) { - struct pci_dev *_pci_dev; + for_each_pci_dev(_pci_dev) { int node;

- _pci_dev = pci_get_domain_bus_and_slot(i, bus_number, PCI_DEVFN(dev, fn)); - if (!_pci_dev) + if (_pci_dev->bus->number != bus_number || + _pci_dev->devfn != PCI_DEVFN(dev, fn)) continue;

++no_matches;