Patch "platform/x86: ISST: Remove 8 socket limit" has been added to the 6.3-stable tree

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This is a note to let you know that I've just added the patch titled

    platform/x86: ISST: Remove 8 socket limit

to the 6.3-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     platform-x86-isst-remove-8-socket-limit.patch
and it can be found in the queue-6.3 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


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

From: Steve Wahl <steve.wahl@xxxxxxx>

commit bbb320bfe2c3e9740fe89cfa0a7089b4e8bfc4ff upstream.

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@xxxxxxx>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230519160420.2588475-1-steve.wahl@xxxxxxx
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/platform/x86/intel/speed_select_if/isst_if_common.c |   12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

--- a/drivers/platform/x86/intel/speed_select_if/isst_if_common.c
+++ b/drivers/platform/x86/intel/speed_select_if/isst_if_common.c
@@ -295,14 +295,13 @@ 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())
@@ -314,12 +313,11 @@ static struct pci_dev *_isst_if_get_pci_
 	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;


Patches currently in stable-queue which might be from steve.wahl@xxxxxxx are

queue-6.3/platform-x86-isst-remove-8-socket-limit.patch



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