linux_dsm_epyc7002/arch/powerpc
Oliver O'Halloran 21b43bd59c powerpc/eeh: Remove VF config space restoration
There's a bunch of strange things about this code. First up is that none of
the fields being written to are functional for a VF. The SR-IOV
specification lists then as "Reserved, but OS should preserve" so writing
new values to them doesn't do anything and is clearly wrong from a
correctness perspective.

However, since VFs are designed to be managed by the OS there is an
argument to be made that we should be saving and restoring some parts of
config space. We already sort of do that by saving the first 64 bytes of
config space in the eeh_dev (see eeh_dev->config_space[]). This is
inadequate since it doesn't even consider saving and restoring the PCI
capability structures. However, this is a problem with EEH in general and
that needs to be fixed for non-VF devices too.

There's no real reason to keep around this around so delete it.

Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200725081231.39076-6-oohall@gmail.com
2020-07-26 23:34:20 +10:00
..
boot powerpc/boot/dts: Fix dtc "pciex" warnings 2020-06-30 14:38:00 +10:00
configs powerpc/64s/hash: Disable subpage_prot syscall by default 2020-07-22 00:01:25 +10:00
crypto powerpc: Replace HTTP links with HTTPS ones 2020-07-22 00:01:23 +10:00
include powerpc/eeh: Remove VF config space restoration 2020-07-26 23:34:20 +10:00
kernel powerpc/eeh: Remove VF config space restoration 2020-07-26 23:34:20 +10:00
kexec powerpc/book3s64/keys/kuap: Reset AMR/IAMR values on kexec 2020-07-20 22:57:59 +10:00
kvm powerpc/watchpoint: Rename current H_SET_MODE DAWR macro 2020-07-26 23:34:19 +10:00
lib powerpc/sstep: Fix incorrect CONFIG symbol in scv handling 2020-07-24 23:16:49 +10:00
math-emu treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
mm powerpc/book3s64/pkey: Disable pkey on POWER6 and before 2020-07-26 23:34:18 +10:00
net powerpc/ppc-opcode: Consolidate powerpc instructions from bpf_jit.h 2020-07-16 13:12:42 +10:00
oprofile maccess: rename probe_user_{read,write} to copy_{from,to}_user_nofault 2020-06-17 10:57:41 -07:00
perf powerpc/perf: BHRB control to disable BHRB logic when not used 2020-07-22 21:56:42 +10:00
platforms powerpc/eeh: Remove VF config space restoration 2020-07-26 23:34:20 +10:00
purgatory .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
sysdev powerpc/xive: Ignore kmemleak false positives 2020-06-22 10:37:57 +10:00
tools powerpc/head_check: Avoid broken pipe 2020-05-19 00:10:35 +10:00
xmon Merge branch 'scv' support into next 2020-07-23 17:43:44 +10:00
Kbuild powerpc/kexec: Move kexec files into a dedicated subdir. 2019-11-21 15:41:34 +11:00
Kconfig powerpc: Select ARCH_HAS_MEMBARRIER_SYNC_CORE 2020-07-23 17:43:23 +10:00
Kconfig.debug powerpc: Remove Xilinx PPC405/PPC440 support 2020-05-28 23:24:34 +10:00
Makefile powerpc/4xx: ppc4xx compile flag optimizations 2020-06-22 14:19:12 +10:00
Makefile.postlink powerpc: Do not consider weak unresolved symbol relocations as bad 2020-01-31 20:17:22 +11:00