Narayana Murty N 33bc69cf66 powerpc/eeh: Fix missing PE bridge reconfiguration during VFIO EEH recovery ... VFIO EEH recovery for PCI passthrough devices fails on PowerNV and pseries platforms due to missing host-side PE bridge reconfiguration. In the current implementation, eeh_pe_configure() only performs RTAS or OPAL-based bridge reconfiguration for native host devices, but skips it entirely for PEs managed through VFIO in guest passthrough scenarios. This leads to incomplete EEH recovery when a PCI error affects a passthrough device assigned to a QEMU/KVM guest. Although VFIO triggers the EEH recovery flow through VFIO_EEH_PE_ENABLE ioctl, the platform-specific bridge reconfiguration step is silently bypassed. As a result, the PE's config space is not fully restored, causing subsequent config space access failures or EEH freeze-on-access errors inside the guest. This patch fixes the issue by ensuring that eeh_pe_configure() always invokes the platform's configure_bridge() callback (e.g., pseries_eeh_phb_configure_bridge) even for VFIO-managed PEs. This ensures that RTAS or OPAL calls to reconfigure the PE bridge are correctly issued on the host side, restoring the PE's configuration space after an EEH event. This fix is essential for reliable EEH recovery in QEMU/KVM guests using VFIO PCI passthrough on PowerNV and pseries systems. Tested with: - QEMU/KVM guest using VFIO passthrough (IBM Power9,(lpar)Power11 host) - Injected EEH errors with pseries EEH errinjct tool on host, recovery verified on qemu guest. - Verified successful config space access and CAP_EXP DevCtl restoration after recovery Fixes: 212d16cdca ("powerpc/eeh: EEH support for VFIO PCI device") Signed-off-by: Narayana Murty N <nnmlinux@linux.ibm.com> Reviewed-by: Vaibhav Jain <vaibhav@linux.ibm.com> Reviewed-by: Ganesh Goudar <ganeshgr@linux.ibm.com> Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Link: https://patch.msgid.link/20250508062928.146043-1-nnmlinux@linux.ibm.com		2025-06-13 12:30:48 +05:30
..
ptrace	seccomp: remove the 'sd' argument from __secure_computing()	2025-02-10 09:26:22 -08:00
syscalls	fs: add open_tree_attr()	2025-02-12 12:12:28 +01:00
trace	powerpc64/ftrace: fix clobbered r15 during livepatching	2025-04-29 11:03:07 +05:30
vdso	powerpc/vdso: Fix build of VDSO32 with pcrel	2025-06-13 12:30:15 +05:30
.gitignore
85xx_entry_mapping.S	powerpc: Remove CONFIG_FSL_BOOKE	2022-09-26 22:47:37 +10:00
align.c
asm-offsets.c	powerpc/vdso: Switch to generic storage implementation	2025-02-21 09:54:02 +01:00
audit_32.h	powerpc: address missing-prototypes warnings	2023-08-02 22:22:19 +10:00
audit.c	powerpc: address missing-prototypes warnings	2023-08-02 22:22:19 +10:00
btext.c	powerpc: Use shared font data	2023-10-01 23:09:02 +11:00
cacheinfo.c	powerpc: Constify struct kobj_type	2024-09-05 22:25:36 +10:00
cacheinfo.h
compat_audit.c	powerpc: address missing-prototypes warnings	2023-08-02 22:22:19 +10:00
cpu_setup_6xx.S	powerpc: rename SPRN_HID2 define to SPRN_HID2_750FX	2024-05-08 00:25:00 +10:00
cpu_setup_44x.S
cpu_setup_e500.S	powerpc/32: Fix objtool unannotated intra-function call warnings	2022-11-18 19:00:06 +11:00
cpu_setup_pa6t.S
cpu_setup_power.c	powerpc/dexcr: Add initial Dynamic Execution Control Register (DEXCR) support	2023-06-19 17:36:25 +10:00
cpu_setup_ppc970.S
cpu_specs_8xx.h	powerpc/cputable: Split cpu_specs[] out of cputable.h	2022-09-26 22:47:13 +10:00
cpu_specs_44x.h	powerpc/cputable: Split cpu_specs[] out of cputable.h	2022-09-26 22:47:13 +10:00
cpu_specs_47x.h	powerpc/cputable: Split cpu_specs[] out of cputable.h	2022-09-26 22:47:13 +10:00
cpu_specs_85xx.h	powerpc/cputable: Split cpu_specs[] for mpc85xx and e500mc	2022-09-26 23:00:05 +10:00
cpu_specs_book3s_32.h	powerpc/cputable: Split cpu_specs[] out of cputable.h	2022-09-26 22:47:13 +10:00
cpu_specs_book3s_64.h	powerpc: Add Power11 architected and raw mode	2024-02-21 23:11:00 +11:00
cpu_specs_e500mc.h	powerpc/cputable: Add missing PPC_FEATURE_BOOKE on PPC64 Book-E	2024-02-14 14:24:06 +11:00
cpu_specs.h	powerpc: Remove core support for 40x	2024-06-28 22:28:47 +10:00
cputable.c	powerpc: Make cpu_spec __ro_after_init	2023-11-27 22:01:14 +11:00
crash_dump.c	asm-generic: introduce text-patching.h	2024-11-07 14:25:15 -08:00
dawr.c	powerpc: Include asm/firmware.h in all users of firmware_has_feature()	2022-06-29 16:45:05 +10:00
dbell.c	powerpc/64: Fix perf profiling asynchronous interrupt handlers	2023-01-30 20:07:42 +11:00
dexcr.c	powerpc/dexcr: Add DEXCR prctl interface	2024-05-06 22:04:31 +10:00
dma-iommu.c	powerpc: Remove some Cell leftovers	2025-02-26 21:15:07 +05:30
dma-mask.c	dma-mapping: move arch_dma_set_mask() declaration to header	2023-07-31 17:54:28 +02:00
dma-swiotlb.c	swiotlb: add a SWIOTLB_ANY flag to lift the low memory restriction	2022-04-18 07:21:12 +02:00
dt_cpu_ftrs.c	mm/memblock: add memblock_alloc_or_panic interface	2025-01-25 20:22:38 -08:00
early_32.c	powerpc: Move C prototypes out of asm-prototypes.h	2022-03-08 22:06:25 +11:00
eeh_cache.c
eeh_driver.c	powerpc/eeh: Permanently disable the removed device	2024-04-29 23:51:15 +10:00
eeh_event.c	powerpc: fix typos in comments	2022-05-05 22:12:44 +10:00
eeh_pe.c	powerpc/eeh: avoid possible crash when edev->pdev changes	2024-06-23 11:54:27 +10:00
eeh_sysfs.c	powerpc: Add missing headers	2022-05-08 22:15:40 +10:00
eeh.c	powerpc/eeh: Fix missing PE bridge reconfiguration during VFIO EEH recovery	2025-06-13 12:30:48 +05:30
entry_32.S	powerpc: Replace CONFIG_4xx with CONFIG_44x	2024-06-28 22:28:48 +10:00
epapr_hcalls.S	powerpc/4xx: Remove CONFIG_BOOKE_OR_40x	2024-06-28 22:28:48 +10:00
epapr_paravirt.c	asm-generic: introduce text-patching.h	2024-11-07 14:25:15 -08:00
exceptions-64e.S	powerpc/64e: drop unused TLB miss handlers	2024-07-12 15:52:15 -07:00
exceptions-64s.S	powerpc/cell: Remove support for IBM Cell Blades	2025-02-26 21:15:07 +05:30
fadump.c	fadump: Use str_yes_no() helper in fadump_show_config()	2025-04-16 22:25:22 +05:30
firmware.c	powerpc: Export kvm_guest static key, for bcachefs six locks	2024-01-01 11:47:38 -05:00
fpu.S	powerpc: Don't clobber f0/vs0 during fp|altivec register save	2023-11-28 23:04:43 +11:00
head_8xx.S	powerpc/8xx: Fix kernel DTLB miss on dcbz	2024-10-11 15:53:06 +11:00
head_32.h	powerpc: Remove core support for 40x	2024-06-28 22:28:47 +10:00
head_44x.S	powerpc/44x: Introduce _PAGE_READ and remove _PAGE_USER	2023-10-19 17:12:46 +11:00
head_64.S	powerpc/64s: Fix unnecessary copy to 0 when kernel is booted at address 0	2024-06-23 11:54:13 +10:00
head_85xx.S	powerpc/e500: use contiguous PMD instead of hugepd	2024-07-12 15:52:18 -07:00
head_book3s_32.S	powerpc/603: Inconditionally use task PGDIR in DTLB misses	2024-08-30 21:29:55 +10:00
head_booke.h	powerpc: Remove core support for 40x	2024-06-28 22:28:47 +10:00
hw_breakpoint_constraints.c	powerpc/watchpoint: Disable pagefaults when getting user instruction	2023-09-18 12:23:47 +10:00
hw_breakpoint.c	powerpc/watchpoints: Annotate atomic context in more places	2023-09-18 12:23:47 +10:00
idle_6xx.S
idle_64e.S	powerpc: add ISA v3.0 / v3.1 wait opcode macro	2022-09-28 19:22:10 +10:00
idle_85xx.S	powerpc: Cleanup idle for e500	2022-09-26 23:00:14 +10:00
idle_book3s.S
idle.c	treewide: const qualify ctl_tables where applicable	2025-01-28 13:48:37 +01:00
ima_arch.c	integrity: Always reference the blacklist keyring with appraisal	2023-08-01 08:17:25 -04:00
interrupt_64.S	powerpc/64: Set task pt_regs->link to the LR value on scv entry	2024-02-05 22:43:19 +11:00
interrupt.c	powerpc: enable dynamic preemption	2025-04-16 22:30:22 +05:30
io.c	powerpc/io: Use standard barrier macros in io.c	2025-02-26 21:15:09 +05:30
iomap.c
iommu.c	powerpc/iommu: Use str_disabled_enabled() helper	2025-05-15 10:05:06 +05:30
irq_64.c	work around gcc bugs with 'asm goto' with outputs	2024-02-09 15:57:48 -08:00
irq.c	powerpc/irq: use seq_put_decimal_ull_width() for decimal values	2024-11-10 22:33:52 +11:00
isa-bridge.c	mm: Introduce vmap_page_range() to map pages in PCI address space	2024-03-11 16:58:10 +01:00
jump_label.c	asm-generic: introduce text-patching.h	2024-11-07 14:25:15 -08:00
kdebugfs.c
kgdb.c	asm-generic: introduce text-patching.h	2024-11-07 14:25:15 -08:00
kprobes-ftrace.c	kprobe/ftrace: bail out if ftrace was killed	2024-05-16 07:23:30 +09:00
kprobes.c	powerpc updates for 6.13	2024-11-23 10:44:31 -08:00
kvm_emul.S
kvm.c	powerpc: Remove CONFIG_PPC_BOOK3E_MMU	2022-09-26 23:00:14 +10:00
l2cr_6xx.S
legacy_serial.c	powerpc: Explicitly include correct DT includes	2023-08-02 22:22:19 +10:00
Makefile	Kbuild updates for v6.16	2025-06-07 10:05:35 -07:00
mce_power.c
mce.c	powerpc/mce: log the error for all unrecoverable errors	2023-02-10 22:17:34 +11:00
misc_32.S	powerpc/32: Replace mulhdu() by mul_u64_u64_shr()	2024-12-10 08:15:30 +05:30
misc_64.S	powerpc/64: Remove maple platform	2024-10-29 23:01:52 +11:00
misc.S	powerpc: replace #include <asm/export.h> with #include <linux/export.h>	2023-08-16 23:54:48 +10:00
module_32.c	asm-generic: introduce text-patching.h	2024-11-07 14:25:15 -08:00
module_64.c	powerpc64/ftrace: fix module loading without patchable function entries	2025-04-15 11:40:54 +05:30
module.c	powerpc updates for 6.10	2024-05-17 09:05:46 -07:00
msi.c
note.S
nvram_64.c	printk: Add a short description string to kmsg_dump()	2024-07-17 12:35:24 +02:00
optprobes_head.S	powerpc: add definition for pt_regs offset within an interrupt frame	2022-12-02 17:54:08 +11:00
optprobes.c	asm-generic: introduce text-patching.h	2024-11-07 14:25:15 -08:00
paca.c	docs: move powerpc under arch	2023-10-10 13:35:55 -06:00
pci_32.c	mm/memblock: add memblock_alloc_or_panic interface	2025-01-25 20:22:38 -08:00
pci_64.c	powerpc/pci_64: Init pcibios subsys a bit later	2023-03-14 23:36:27 +11:00
pci_dn.c	powerpc/pci_dn: Add missing of_node_put()	2022-09-05 17:30:25 +10:00
pci_of_scan.c	powerpc: Add missing headers	2022-05-08 22:15:40 +10:00
pci-common.c	arch: Rename fbdev header and source files	2024-05-03 17:07:50 +02:00
pci-hotplug.c	powerpc/pci: Hotplug driver bridge support	2024-07-04 23:10:40 +10:00
pmc.c	powerpc/85xx: Mark some functions static and add missing includes to fix no previous prototype error	2023-08-23 15:55:21 +10:00
ppc_save_regs.S	powerpc: update ppc_save_regs to save current r1 in pt_regs	2023-06-19 17:37:14 +10:00
proc_powerpc.c	powerpc: Replace strcpy() with strscpy() in proc_ppc64_init()	2025-05-15 09:54:54 +05:30
process.c	powerpc: Don't use --- in kernel logs	2025-04-29 11:41:38 +05:30
prom_entry_64.S	powerpc/64: Rename entry_64.S to prom_entry_64.S	2023-06-15 14:04:19 +10:00
prom_init_check.sh	kasan, powerpc: don't rename memintrinsics if compiler adds prefixes	2023-03-23 17:18:33 -07:00
prom_init.c	powerpc/prom_init: Fixup missing #size-cells on PowerBook6,7	2025-03-07 19:08:38 +05:30
prom_parse.c
prom.c	powerpc/crash: use generic crashkernel reservation	2025-03-16 22:30:48 -07:00
reloc_32.S
reloc_64.S	powerpc/64: avoid using r13 in relocate	2022-09-28 19:22:13 +10:00
rethook.c	powerpc: Replace kretprobe code with rethook on powerpc	2024-09-05 22:25:36 +10:00
rtas_entry.S	powerpc/rtas: Fix RTAS MSR[HV] handling for Cell	2022-08-26 08:41:54 +10:00
rtas_flash.c	powerpc: add missing MODULE_DESCRIPTION() macros	2024-07-04 22:39:20 +10:00
rtas_pci.c	powerpc/rtas_pci: rename and properly expose config access APIs	2023-11-28 21:49:45 +11:00
rtas-proc.c	powerpc/rtas: Fix ppc_rtas_rmo_buf_show() kernel-doc	2023-11-07 13:13:45 +11:00
rtas-rtc.c	powerpc/rtas: arch-wide function token lookup conversions	2023-02-13 22:35:03 +11:00
rtas.c	powerpc/pseries: Add a char driver for physical-attestation RTAS	2025-04-17 11:42:30 +05:30
rtasd.c	powerpc/rtas: arch-wide function token lookup conversions	2023-02-13 22:35:03 +11:00
secure_boot.c	powerpc: Use str_enabled_disabled() helper function	2024-11-05 20:48:20 +11:00
security.c	asm-generic: introduce text-patching.h	2024-11-07 14:25:15 -08:00
secvar-ops.c	powerpc/secvar: Warn and error if multiple secvar ops are set	2023-02-12 22:12:36 +11:00
secvar-sysfs.c	powerpc/secvar: Constify 'struct bin_attribute'	2025-02-21 09:20:32 +01:00
setup_32.c	mm/memblock: add memblock_alloc_or_panic interface	2025-01-25 20:22:38 -08:00
setup_64.c	powerpc/io: Remove PPC_INDIRECT_MMIO	2025-02-26 21:15:08 +05:30
setup-common.c	arch, mm: set max_mapnr when allocating memory map for FLATMEM	2025-03-17 22:06:52 -07:00
setup.h	powerpc/4xx: Remove CONFIG_BOOKE_OR_40x	2024-06-28 22:28:48 +10:00
signal_32.c	powerpc/signal32: Force inlining of __unsafe_save_user_regs() and save_tm_user_regs_unsafe()	2023-06-09 23:29:51 +10:00
signal_64.c	powerpc/signal: Update comment for clarity	2022-07-28 16:22:14 +10:00
signal.c	powerpc: Replace GPL 2.0+ README.legal boilerplate with SPDX	2023-09-19 20:05:58 +10:00
signal.h	powerpc: Replace GPL 2.0+ README.legal boilerplate with SPDX	2023-09-19 20:05:58 +10:00
smp-tbsync.c
smp.c	powerpc: Split systemcfg struct definitions out from vdso	2024-11-02 12:37:36 +01:00
stacktrace.c	powerpc: Replace kretprobe code with rethook on powerpc	2024-09-05 22:25:36 +10:00
static_call.c	powerpc/static_call: Implement inline static calls	2025-02-26 21:09:43 +05:30
suspend.c
switch.S	powerpc: Fix 'intra_function_call not a direct call' warning	2025-03-10 10:00:17 +05:30
swsusp_32.S	powerpc/32: Fix objtool unannotated intra-function call warnings	2022-11-18 19:00:06 +11:00
swsusp_64.c	powerpc/suspend: Add prototype for do_after_copyback()	2023-11-30 13:15:49 +11:00
swsusp_85xx.S	powerpc: Remove CONFIG_FSL_BOOKE	2022-09-26 22:47:37 +10:00
swsusp_asm64.S	powerpc/64: asm use consistent global variable declaration and access	2022-09-28 19:22:12 +10:00
swsusp.c
sys_ppc32.c	powerpc/32: fix syscall wrappers with 64-bit arguments	2022-11-01 10:24:09 +11:00
syscall.c	treewide: context_tracking: Rename CONTEXT_* into CT_STATE_*	2024-07-29 07:33:10 +05:30
syscalls.c	powerpc: Adopt SYSCALL_DEFINE for arch-specific syscall handlers	2022-09-28 19:22:08 +10:00
sysfs.c	powerpc/machdep: Drop include of dma-mapping.h	2024-10-29 23:01:05 +11:00
systbl.c	powerpc: Don't add __powerpc_ prefix to syscall entry points	2022-10-07 00:59:54 +11:00
tau_6xx.c	powerpc, workqueue: Use alloc_ordered_workqueue() to create ordered workqueues	2023-05-08 13:52:27 -10:00
time.c	powerpc updates for 6.15	2025-03-27 19:39:08 -07:00
tm.S	powerpc: replace #include <asm/export.h> with #include <linux/export.h>	2023-08-16 23:54:48 +10:00
traps.c	powerpc: Rely on generic printing of preemption model	2025-03-17 11:23:39 +01:00
ucall.S	powerpc: replace #include <asm/export.h> with #include <linux/export.h>	2023-08-16 23:54:48 +10:00
udbg_16550.c	powerpc/64: Remove maple platform	2024-10-29 23:01:52 +11:00
udbg.c	powerpc: Remove UDBG_RTAS_CONSOLE	2025-02-26 21:15:09 +05:30
uprobes.c	powerpc: Reject probes on instructions that can't be single stepped	2022-05-06 00:00:20 +10:00
vdso32_wrapper.S	powerpc/vdso: Mark the vDSO code read-only after init	2024-12-18 13:46:38 +05:30
vdso64_wrapper.S	powerpc/vdso: Mark the vDSO code read-only after init	2024-12-18 13:46:38 +05:30
vdso.c	powerpc/vdso: Switch to generic storage implementation	2025-02-21 09:54:02 +01:00
vecemu.c
vector.S	powerpc: Don't clobber f0/vs0 during fp|altivec register save	2023-11-28 23:04:43 +11:00
vmlinux.lds.S	powerpc/vmlinux: Remove etext, edata and end	2025-02-24 12:26:21 +05:30
watchdog.c	powerpc/watchdog: Switch to use hrtimer_setup()	2025-02-18 10:32:31 +01:00