Did a git bisect and the bad commit is

acbdb9956fe93f4669141f103cb543d3025775db is the first bad commit
commit acbdb9956fe93f4669141f103cb543d3025775db
Author: Cédric Le Goater <email address hidden>
Date:   Thu Aug 20 15:45:46 2020 +0200

    spapr/xive: Allocate IPIs independently from the other sources
    
    The vCPU IPIs are now allocated in kvmppc_xive_cpu_connect() when the
    vCPU connects to the KVM device and not when all the sources are reset
    in kvmppc_xive_source_reset()
    
    This requires extra care for hotplug vCPUs and VM restore.
    
    Signed-off-by: Cédric Le Goater <email address hidden>
    Message-Id: <email address hidden>
    Signed-off-by: David Gibson <email address hidden>

 hw/intc/spapr_xive_kvm.c | 47 ++++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 42 insertions(+), 5 deletions(-)




# git bisect log
git bisect start
# good: [d0ed6a69d399ae193959225cdeaa9382746c91cc] Update version for v5.1.0 release
git bisect good d0ed6a69d399ae193959225cdeaa9382746c91cc
# bad: [7daf8f8d011cdd5d3e86930ed2bde969425c790c] Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging
git bisect bad 7daf8f8d011cdd5d3e86930ed2bde969425c790c
# skip: [7595a65818ea9b49c36650a8c217a1ef9bd6e62a] hw/riscv: Sort the Kconfig options in alphabetical order
git bisect skip 7595a65818ea9b49c36650a8c217a1ef9bd6e62a
# skip: [3b65b742543bc6c2ad35e3b42401a26b48a87f26] target/hppa: Fix boot with old Linux installation CDs
git bisect skip 3b65b742543bc6c2ad35e3b42401a26b48a87f26
# bad: [f4ef8c9cc10b3bee829b9775879d4ff9f77c2442] Merge remote-tracking branch 'remotes/ehabkost/tags/machine-next-pull-request' into staging
git bisect bad f4ef8c9cc10b3bee829b9775879d4ff9f77c2442
# good: [4ee40a6b98c02b72fc5dd262df9d3ac8680d767b] hw/usb: Add U2F device check to passthru mode
git bisect good 4ee40a6b98c02b72fc5dd262df9d3ac8680d767b
# skip: [fe4b0b5bfa96c38ad1cad0689a86cca9f307e353] tcg: Implement 256-bit dup for tcg_gen_gvec_dup_mem
git bisect skip fe4b0b5bfa96c38ad1cad0689a86cca9f307e353
# skip: [287b1defeb44398d02669d97ebdc347d650f274d] target/microblaze: Cache mem_index in DisasContext
git bisect skip 287b1defeb44398d02669d97ebdc347d650f274d
# skip: [7a1fb2ef40df508e90eb756a80d67e6435246cae] block/nvme: Extract nvme_poll_queue()
git bisect skip 7a1fb2ef40df508e90eb756a80d67e6435246cae
# good: [536e340f464d7c2ef55cca47c7535d9409bf03c7] target/microblaze: Convert msrclr, msrset to decodetree
git bisect good 536e340f464d7c2ef55cca47c7535d9409bf03c7
# good: [227de21ed0759e275a469394af72c999d0134bb5] Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-20200903' into staging
git bisect good 227de21ed0759e275a469394af72c999d0134bb5
# bad: [b95ba83fc56ebfc4b6869f21db0c757c0c191104] Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-5.2-20200908' into staging
git bisect bad b95ba83fc56ebfc4b6869f21db0c757c0c191104
# good: [789035f1239054331b335801a06bdbef026f02e1] oss-fuzz: fix rpath
git bisect good 789035f1239054331b335801a06bdbef026f02e1
# good: [00942071a0eabeb3ebc3bd594296859587f8f3c8] Merge remote-tracking branch 'remotes/rth/tags/pull-mb-20200907-2' into staging
git bisect good 00942071a0eabeb3ebc3bd594296859587f8f3c8
# bad: [554c2169e9251ca2829ab968bd9ba5641a5abe1d] ppc/spapr: Use start-powered-off CPUState property
git bisect bad 554c2169e9251ca2829ab968bd9ba5641a5abe1d
# good: [235d3b116213828f4206e2e4b199a32bffc96f35] spapr/xive: Modify kvm_cpu_is_enabled() interface
git bisect good 235d3b116213828f4206e2e4b199a32bffc96f35
# bad: [90d282d0858cf5a38f3e8a7e201aeab2a0ccbe88] ppc/spapr_nvdimm: use g_autofree in spapr_nvdimm_validate_opts()
git bisect bad 90d282d0858cf5a38f3e8a7e201aeab2a0ccbe88
# bad: [acbdb9956fe93f4669141f103cb543d3025775db] spapr/xive: Allocate IPIs independently from the other sources
git bisect bad acbdb9956fe93f4669141f103cb543d3025775db
# good: [fa94447a2cd6643609d5822d5b5f739dc8ad8a8c] spapr/xive: Use kvmppc_xive_source_reset() in post_load
git bisect good fa94447a2cd6643609d5822d5b5f739dc8ad8a8c
# first bad commit: [acbdb9956fe93f4669141f103cb543d3025775db] spapr/xive: Allocate IPIs independently from the other sources


Regards,
-Satheesh