mirrors/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-03-09 12:09:31 -04:00
Code Issues Packages Projects Releases Wiki Activity

Merge tag 'x86-urgent-2020-11-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into for-next/iommu/fixes

Browse Source 
Pull in x86 fixes from Thomas, as they include a change to the Intel DMAR
code on which we depend:

* tag 'x86-urgent-2020-11-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  iommu/vt-d: Cure VF irqdomain hickup
  x86/platform/uv: Fix copied UV5 output archtype
  x86/platform/uv: Drop last traces of uv_flush_tlb_others
This commit is contained in:
Will Deacon
2020-11-19 09:46:58 +00:00
parent 4d213e76a3 ff828729be
commit 388255ce95
3 changed files with 21 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
arch/x86/include/asm/uv/uv.h
View File

@@ -2,14 +2,8 @@
#ifndef _ASM_X86_UV_UV_H
#define _ASM_X86_UV_UV_H
#include <asm/tlbflush.h>
enum uv_system_type {UV_NONE, UV_LEGACY_APIC, UV_X2APIC};
struct cpumask;
struct mm_struct;
struct flush_tlb_info;
#ifdef CONFIG_X86_UV
#include <linux/efi.h>
@@ -44,10 +38,6 @@ static inline int is_uv_system(void) { return 0; }
static inline int is_uv_hubbed(int uv) { return 0; }
static inline void uv_cpu_init(void) { }
static inline void uv_system_init(void) { }
static inline const struct cpumask *
uv_flush_tlb_others(const struct cpumask *cpumask,
const struct flush_tlb_info *info)
{ return cpumask; }
#endif /* X86_UV */

6
arch/x86/kernel/apic/x2apic_uv_x.c
View File

@@ -33,7 +33,7 @@ static union uvh_apicid uvh_apicid;
static int uv_node_id;
/* Unpack AT/OEM/TABLE ID's to be NULL terminated strings */
static u8 uv_archtype[UV_AT_SIZE];
static u8 uv_archtype[UV_AT_SIZE + 1];
static u8 oem_id[ACPI_OEM_ID_SIZE + 1];
static u8 oem_table_id[ACPI_OEM_TABLE_ID_SIZE + 1];
@@ -320,7 +320,7 @@ static int __init decode_arch_type(unsigned long ptr)
if (n > 0 && n < sizeof(uv_ate->archtype)) {
pr_info("UV: UVarchtype received from BIOS\n");
uv_stringify(UV_AT_SIZE, uv_archtype, uv_ate->archtype);
uv_stringify(sizeof(uv_archtype), uv_archtype, uv_ate->archtype);
return 1;
}
return 0;
@@ -378,7 +378,7 @@ static int __init uv_set_system_type(char *_oem_id, char *_oem_table_id)
if (!early_get_arch_type())
/* If not use OEM ID for UVarchtype */
uv_stringify(UV_AT_SIZE, uv_archtype, _oem_id);
uv_stringify(sizeof(uv_archtype), uv_archtype, oem_id);
/* Check if not hubbed */
if (strncmp(uv_archtype, "SGI", 3) != 0) {

19
drivers/iommu/intel/dmar.c
View File

@@ -333,6 +333,11 @@ static void dmar_pci_bus_del_dev(struct dmar_pci_notify_info *info)
dmar_iommu_notify_scope_dev(info);
}
static inline void vf_inherit_msi_domain(struct pci_dev *pdev)
{
dev_set_msi_domain(&pdev->dev, dev_get_msi_domain(&pdev->physfn->dev));
}
static int dmar_pci_bus_notifier(struct notifier_block *nb,
unsigned long action, void *data)
{
@@ -342,8 +347,20 @@ static int dmar_pci_bus_notifier(struct notifier_block *nb,
/* Only care about add/remove events for physical functions.
* For VFs we actually do the lookup based on the corresponding
* PF in device_to_iommu() anyway. */
if (pdev->is_virtfn)
if (pdev->is_virtfn) {
/*
* Ensure that the VF device inherits the irq domain of the
* PF device. Ideally the device would inherit the domain
* from the bus, but DMAR can have multiple units per bus
* which makes this impossible. The VF 'bus' could inherit
* from the PF device, but that's yet another x86'sism to
* inflict on everybody else.
*/
if (action == BUS_NOTIFY_ADD_DEVICE)
vf_inherit_msi_domain(pdev);
return NOTIFY_DONE;
}
if (action != BUS_NOTIFY_ADD_DEVICE &&
action != BUS_NOTIFY_REMOVED_DEVICE)
return NOTIFY_DONE;