redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

EDAC, skx_edac: Handle systems with segmented PCI busses 

Large systems separate their PCI busses into segments since
the limit of only 256 PCI busses can be too restrictive.

Extend this driver to check whether <segment, bus-number> matches
when deciding how to group memory controller PCI devices to
CPU sockets.

Signed-off-by: Tony Luck <tony.luck@intel.com>
Cc: Aristeu Rozanski <arozansk@redhat.com>
Cc: Charles Rose <charles.rose@dell.com>
Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Cc: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/f58abfd10bf73c8bc5adc1fe4de7408128b00625.1506358467.git.tony.luck@intel.com
[ Make skx_dev.seg an int. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
hifive-unleashed-5.1
Tony Luck 2017-09-25 10:10:42 -07:00 committed by Borislav Petkov
parent f821fe8cc7
commit 88ae80aa60
1 changed files with 5 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/edac/skx_edac.c
View File

@ -67,6 +67,7 @@ static u64 skx_tolm, skx_tohm;
struct skx_dev {
struct list_head list;
u8 bus[4];
int seg;
struct pci_dev *sad_all;
struct pci_dev *util_all;
u32 mcroute;
@ -112,12 +113,12 @@ struct decoded_addr {
int bank_group;
};
static struct skx_dev *get_skx_dev(u8 bus, u8 idx)
static struct skx_dev *get_skx_dev(struct pci_bus *bus, u8 idx)
{
struct skx_dev *d;
list_for_each_entry(d, &skx_edac_list, list) {
if (d->bus[idx] == bus)
if (d->seg == pci_domain_nr(bus) && d->bus[idx] == bus->number)
return d;
}
@ -174,6 +175,7 @@ static int get_all_bus_mappings(void)
pci_dev_put(pdev);
return -ENOMEM;
}
d->seg = pci_domain_nr(pdev->bus);
pci_read_config_dword(pdev, 0xCC, &reg);
d->bus[0] = GET_BITFIELD(reg, 0, 7);
d->bus[1] = GET_BITFIELD(reg, 8, 15);
@ -209,7 +211,7 @@ static int get_all_munits(const struct munit *m)
if (i == NUM_IMC)
goto fail;
}
d = get_skx_dev(pdev->bus->number, m->busidx);
d = get_skx_dev(pdev->bus, m->busidx);
if (!d)
goto fail;