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Cédric Le Goater 5843ed9284 powerpc/xive: Fix xmon command "dxi" 
[ Upstream commit 33e4bc5946432a4ac173fd08e8e30a13ab94d06d ]

When under xmon, the "dxi" command dumps the state of the XIVE
interrupts. If an interrupt number is specified, only the state of
the associated XIVE interrupt is dumped. This form of the command
lacks an irq_data parameter which is nevertheless used by
xmon_xive_get_irq_config(), leading to an xmon crash.

Fix that by doing a lookup in the system IRQ mapping to query the IRQ
descriptor data. Invalid interrupt numbers, or not belonging to the
XIVE IRQ domain, OPAL event interrupt number for instance, should be
caught by the previous query done at the firmware level.

Fixes: 97ef27507793 ("powerpc/xive: Fix xmon support on the PowerNV platform")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Tested-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210331144514.892250-8-clg@kaod.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2021-05-20 16:07:58 +08:00
..
alpha alpha: fix annotation of io{read,write}{16,32}be() 2021-03-16 16:34:34 +08:00
arc arc: kernel: Return -EFAULT if copy_to_user() fails 2021-05-20 16:07:08 +08:00
arm ARM: dts: exynos: correct PMIC interrupt trigger level on Snow 2021-05-20 16:07:45 +08:00
arm64 arm64: dts: renesas: r8a77980: Fix vin4-7 endpoint binding 2021-05-20 16:07:46 +08:00
c6x Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
csky csky: change a Kconfig symbol name to fix e1000 build error 2021-05-20 16:07:15 +08:00
h8300 h8300: fix PREEMPTION build, TI_PRE_COUNT undefined 2021-04-12 12:52:05 +08:00
hexagon hexagon: define ioremap_uc 2021-03-16 16:27:29 +08:00
ia64 ia64: fix discontig.c section mismatches 2021-05-20 16:07:15 +08:00
m68k m68k: mvme147,mvme16x: Don't wipe PCC timer config bits 2021-05-20 16:07:48 +08:00
microblaze Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
mips mips: bmips: fix syscon-reboot nodes 2021-05-20 16:07:56 +08:00
nds32 nds32: flush_dcache_page: use page_mapping_file to avoid races with swapoff 2021-05-20 16:06:56 +08:00
nios2 Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
openrisc openrisc: Fix issue with get_user for 64-bit values 2021-03-16 16:39:36 +08:00
parisc parisc: avoid a warning on u8 cast for cmpxchg on u8 pointers 2021-05-20 16:06:56 +08:00
powerpc powerpc/xive: Fix xmon command "dxi" 2021-05-20 16:07:58 +08:00
riscv riscv: Fix spelling mistake "SPARSEMEM" to "SPARSMEM" 2021-05-20 16:07:11 +08:00
s390 KVM: s390: split kvm_s390_real_to_abs 2021-05-20 16:07:43 +08:00
sh sh: dma: fix kconfig dependency for G2_DMA 2021-04-12 12:51:39 +08:00
sparc sparc64: Fix opcode filtering in handling of no fault loads 2021-04-12 12:53:23 +08:00
um um: mm: check more comprehensively for stub changes 2021-04-12 12:52:40 +08:00
unicore32 Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
x86 x86/events/amd/iommu: Fix sysfs type mismatch 2021-05-20 16:07:54 +08:00
xtensa xtensa: move coprocessor_flush to the .text section 2021-05-20 16:06:49 +08:00
.gitignore Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
Kconfig Revert: "ring-buffer: Remove HAVE_64BIT_ALIGNED_ACCESS" 2021-03-16 16:43:47 +08:00