Merge tag 'pull-ppc-for-9.2-1-20241104' of https://gitlab.com/npiggin/qemu into staging

* Various bug fixes
* Big cleanup of deprecated machines
* Power11 support for spapr
* XIVE improvements
* Goo

Merge tag 'pull-ppc-for-9.2-1-20241104' of https://gitlab.com/npiggin/qemu into staging

* Various bug fixes
* Big cleanup of deprecated machines
* Power11 support for spapr
* XIVE improvements
* Goodbye to Cedric and David as ppc reviewers, thank you both o7

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# gpg: using RSA key 4E437DDA56616F4329B0A79567B30276A8621CAE
# gpg: Good signature from "Nicholas Piggin <npiggin@gmail.com>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 4E43 7DDA 5661 6F43 29B0 A795 67B3 0276 A862 1CAE

* tag 'pull-ppc-for-9.2-1-20241104' of https://gitlab.com/npiggin/qemu: (67 commits)
MAINTAINERS: Remove myself as reviewer
MAINTAINERS: Remove myself from XIVE
MAINTAINERS: Remove myself from the PowerNV machines
hw/ppc: Consolidate ppc440 initial mapping creation functions
hw/ppc: Consolidate e500 initial mapping creation functions
tests/qtest: Add XIVE tests for the powernv10 machine
pnv/xive2: TIMA CI ops using alternative offsets or byte lengths
pnv/xive2: TIMA support for 8-byte OS context push for PHYP
pnv/xive: Update PIPR when updating CPPR
pnv/xive: Add special handling for pool targets
ppc/xive2: Support "Pull Thread Context to Odd Thread Reporting Line"
ppc/xive2: Change context/ring specific functions to be generic
ppc/xive2: Support "Pull Thread Context to Register" operation
ppc/xive2: Allow 1-byte write of Target field in TIMA
ppc/xive2: Dump the VP-group and crowd tables with 'info pic'
ppc/xive2: Dump more NVP state with 'info pic'
pnv/xive2: Support for "OS LGS Push" TIMA operation
ppc/xive2: Support TIMA "Pull OS Context to Odd Thread Reporting Line"
pnv/xive2: Define OGEN field in the TIMA
pnv/xive: TIMA patch sets pre-req alignment and formatting changes
...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

show more ...

spapr: nested: Add Power11 capability support for Nested PAPR guests in TCG L0

The Power11 architected and raw mode support in Linux was merged via [1]
and the corresponding support in QEMU is waiti

spapr: nested: Add Power11 capability support for Nested PAPR guests in TCG L0

The Power11 architected and raw mode support in Linux was merged via [1]
and the corresponding support in QEMU is waiting to be added by [2]
which in V6 currently.

Add the Power11 capabilities and the required handling in TCG L0
implementation of the "Nested PAPR API".

Note: This patch is based on [2].

[1] https://lore.kernel.org/all/20240221044623.1598642-1-mpe@ellerman.id.au/
[2] https://lore.kernel.org/all/20240731055022.696051-1-adityag@linux.ibm.com/

Signed-off-by: Amit Machhiwal <amachhiw@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>

show more ...

spapr: nested: Add support for DPDES SPR in GSB for TCG L0

The DPDES support for doorbell emulation and handling for KVM on PAPR
guests was added in Linux via [1]. Subsequently, a new GSB (Guest Sta

spapr: nested: Add support for DPDES SPR in GSB for TCG L0

The DPDES support for doorbell emulation and handling for KVM on PAPR
guests was added in Linux via [1]. Subsequently, a new GSB (Guest State
Buffer) element for DPDES was added in Linux; the same has been missing
in TCG L0 implementation. Add support for DPDES register's APIv2 GSB
element and required handling in `spapr_nested.c`.

Currently, booting a KVM guest inside a QEMU TCG guest fails with the
following crash. The crash occurs while handling the GUEST_RUN_VCPU
hcall made in TCG L0. In the hcall handling path, map_and_getset_state()
calls getset_state(), which, in turn, calls guest_state_request_check()
to validate the GSR (Guest State Request) elements. During this process,
guest_state_request_check() iterates over the GSR elements and receives
a NULL return code from guest_state_element_type_find() for the type
variable corresponding to the DPDES register's elemetn ID (which was
unknown to TCG L0). Subsequently, getset_state() returns H_P3,
ultimately leading to the hcall failure and causing the KVM guest to
crash.

KVM: unknown exit, hardware reason ffffffffffffffea
[ ... KVM register dump ... ]

Fix this by adding the required support in TCG L0 implementation of
APIv2.

[1] https://lore.kernel.org/all/20240605113913.83715-1-gautam@linux.ibm.com/

Fixes: 4a575f9a0567 ("spapr: nested: Initialize the GSB elements lookup table.")
Suggested-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Amit Machhiwal <amachhiw@linux.ibm.com>
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>

show more ...

Merge tag 'pull-ppc-for-9.0-3-20240331' of https://gitlab.com/npiggin/qemu into staging

Various fixes for recent regressions and new code.

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Merge tag 'pull-ppc-for-9.0-3-20240331' of https://gitlab.com/npiggin/qemu into staging

Various fixes for recent regressions and new code.

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# gpg: Signature made Sun 31 Mar 2024 08:30:11 BST
# gpg: using RSA key 4E437DDA56616F4329B0A79567B30276A8621CAE
# gpg: Good signature from "Nicholas Piggin <npiggin@gmail.com>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 4E43 7DDA 5661 6F43 29B0 A795 67B3 0276 A862 1CAE

* tag 'pull-ppc-for-9.0-3-20240331' of https://gitlab.com/npiggin/qemu:
tests/avocado: ppc_hv_tests.py set alpine time before setup-alpine
tests/avocado: Fix ppc_hv_tests.py xorriso dependency guard
target/ppc: Do not clear MSR[ME] on MCE interrupts to supervisor
target/ppc: Fix GDB register indexing on secondary CPUs
target/ppc: Restore [H]DEXCR to 64-bits
target/ppc/mmu-radix64: Use correct string format in walk_tree()
hw/ppc/spapr: Include missing 'sysemu/tcg.h' header
spapr: nested: use bitwise NOT operator for flags check

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

show more ...

spapr: nested: use bitwise NOT operator for flags check

Check for flag bit in H_GUEST_GETSET_STATE_FLAG_GUEST_WIDE need to use
bitwise NOT operator to ensure no other flag bits are set.

Resolves: C

spapr: nested: use bitwise NOT operator for flags check

Check for flag bit in H_GUEST_GETSET_STATE_FLAG_GUEST_WIDE need to use
bitwise NOT operator to ensure no other flag bits are set.

Resolves: Coverity CID 1540008
Resolves: Coverity CID 1540009
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>

show more ...

Merge tag 'pull-ppc-for-9.0-2-20240313' of https://gitlab.com/npiggin/qemu into staging

* PAPR nested hypervisor host implementation for spapr TCG
* excp_helper.c code cleanups and improvements
* Mo

Merge tag 'pull-ppc-for-9.0-2-20240313' of https://gitlab.com/npiggin/qemu into staging

* PAPR nested hypervisor host implementation for spapr TCG
* excp_helper.c code cleanups and improvements
* Move more ops to decodetree
* Deprecate pseries-2.12 machines and P9 and P10 DD1.0 CPUs
* Document running Linux on AmigaNG
* Update dt feature advertising POWER CPUs.
* Add P10 PMU SPRs
* Improve pnv topology calculation for SMT8 CPUs.
* Various bug fixes.

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# gpg: Signature made Tue 12 Mar 2024 16:56:31 GMT
# gpg: using RSA key 4E437DDA56616F4329B0A79567B30276A8621CAE
# gpg: Good signature from "Nicholas Piggin <npiggin@gmail.com>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 4E43 7DDA 5661 6F43 29B0 A795 67B3 0276 A862 1CAE

* tag 'pull-ppc-for-9.0-2-20240313' of https://gitlab.com/npiggin/qemu: (38 commits)
spapr: nested: Introduce cap-nested-papr for Nested PAPR API
spapr: nested: Introduce H_GUEST_RUN_VCPU hcall.
spapr: nested: Use correct source for parttbl info for nested PAPR API.
spapr: nested: Introduce H_GUEST_[GET|SET]_STATE hcalls.
spapr: nested: Initialize the GSB elements lookup table.
spapr: nested: Extend nested_ppc_state for nested PAPR API
spapr: nested: Introduce H_GUEST_CREATE_VCPU hcall.
spapr: nested: Introduce H_GUEST_[CREATE|DELETE] hcalls.
spapr: nested: Introduce H_GUEST_[GET|SET]_CAPABILITIES hcalls.
spapr: nested: Document Nested PAPR API
spapr: nested: keep nested-hv related code restricted to its API.
spapr: nested: Introduce SpaprMachineStateNested to store related info.
spapr: nested: move nested part of spapr_get_pate into spapr_nested.c
spapr: nested: register nested-hv api hcalls only for cap-nested-hv
target/ppc: Remove interrupt handler wrapper functions
target/ppc: Clean up ifdefs in excp_helper.c, part 3
target/ppc: Clean up ifdefs in excp_helper.c, part 2
target/ppc: Clean up ifdefs in excp_helper.c, part 1
target/ppc: Add gen_exception_err_nip() function
target/ppc: Readability improvements in exception handlers
...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

show more ...

spapr: nested: Introduce cap-nested-papr for Nested PAPR API

Introduce a SPAPR capability cap-nested-papr which enables nested PAPR
API for nested guests. This new API is to enable support for KVM o

spapr: nested: Introduce cap-nested-papr for Nested PAPR API

Introduce a SPAPR capability cap-nested-papr which enables nested PAPR
API for nested guests. This new API is to enable support for KVM on PowerVM
and the support in Linux kernel has already merged upstream.

Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>

show more ...

spapr: nested: Introduce H_GUEST_RUN_VCPU hcall.

The H_GUEST_RUN_VCPU hcall is used to start execution of a Guest VCPU.
The Hypervisor will update the state of the Guest VCPU based on the
input buff

spapr: nested: Introduce H_GUEST_RUN_VCPU hcall.

The H_GUEST_RUN_VCPU hcall is used to start execution of a Guest VCPU.
The Hypervisor will update the state of the Guest VCPU based on the
input buffer, restore the saved Guest VCPU state, and start its
execution.

The Guest VCPU can stop running for numerous reasons including HCALLs,
hypervisor exceptions, or an outstanding Host Partition Interrupt.
The reason that the Guest VCPU stopped running is communicated through
R4 and the output buffer will be filled in with any relevant state.

Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>

show more ...

spapr: nested: Use correct source for parttbl info for nested PAPR API.

For nested PAPR API, we use SpaprMachineStateNestedGuest struct to store
partition table info, use the same in spapr_get_pate_

spapr: nested: Use correct source for parttbl info for nested PAPR API.

For nested PAPR API, we use SpaprMachineStateNestedGuest struct to store
partition table info, use the same in spapr_get_pate_nested() via
helper.

Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>

show more ...

spapr: nested: Introduce H_GUEST_[GET|SET]_STATE hcalls.

Introduce the nested PAPR hcalls:
- H_GUEST_GET_STATE which is used to get state of a nested guest or
a guest VCPU. The value field

spapr: nested: Introduce H_GUEST_[GET|SET]_STATE hcalls.

Introduce the nested PAPR hcalls:
- H_GUEST_GET_STATE which is used to get state of a nested guest or
a guest VCPU. The value field for each element in the request is
destination to be updated to reflect current state on success.
- H_GUEST_SET_STATE which is used to modify the state of a guest or
a guest VCPU. On success, guest (or its VCPU) state shall be
updated as per the value field for the requested element(s).

Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>

show more ...

spapr: nested: Initialize the GSB elements lookup table.

Nested PAPR API provides a standard Guest State Buffer (GSB) format
with unique IDs for each guest state element for which get/set state is
s

spapr: nested: Initialize the GSB elements lookup table.

Nested PAPR API provides a standard Guest State Buffer (GSB) format
with unique IDs for each guest state element for which get/set state is
supported by the API. Some of the elements are read-only and/or guest-wide.
Introducing additional required GSB elements and helper routines for state
exchange of each of the nested guest state elements for which get/set state
should be supported by the API.

[amachhiw: set the PCR whenever logical PVR is set]

Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Shivaprasad G Bhat <sbhat@linux.ibm.com>
Signed-off-by: Amit Machhiwal <amachhiw@linux.vnet.ibm.com>
Signed-off-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>

show more ...

spapr: nested: Extend nested_ppc_state for nested PAPR API

Currently, nested_ppc_state stores a certain set of registers and works
with nested_[load|save]_state() for state transfer as reqd for nest

spapr: nested: Extend nested_ppc_state for nested PAPR API

Currently, nested_ppc_state stores a certain set of registers and works
with nested_[load|save]_state() for state transfer as reqd for nested-hv API.
Extending these with additional registers state as reqd for nested PAPR API.

Acked-by: Nicholas Piggin <npiggin@gmail.com>
Suggested-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>

show more ...

spapr: nested: Introduce H_GUEST_CREATE_VCPU hcall.

Introduce the nested PAPR hcall H_GUEST_CREATE_VCPU which is used to
create and initialize the specified VCPU resource for the previously
created

spapr: nested: Introduce H_GUEST_CREATE_VCPU hcall.

Introduce the nested PAPR hcall H_GUEST_CREATE_VCPU which is used to
create and initialize the specified VCPU resource for the previously
created guest. Each guest can have multiple VCPUs upto max 2048.
All VCPUs for a guest gets deallocated on guest delete.

Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>

show more ...

spapr: nested: Introduce H_GUEST_[CREATE|DELETE] hcalls.

Introduce the nested PAPR hcalls:
- H_GUEST_CREATE which is used to create and allocate resources for
nested guest being created.
- H

spapr: nested: Introduce H_GUEST_[CREATE|DELETE] hcalls.

Introduce the nested PAPR hcalls:
- H_GUEST_CREATE which is used to create and allocate resources for
nested guest being created.
- H_GUEST_DELETE which is used to delete and deallocate resources
for the nested guest being deleted. It also supports deleting all nested
guests at once using a deleteAll flag.

Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>

show more ...

spapr: nested: Introduce H_GUEST_[GET|SET]_CAPABILITIES hcalls.

Introduce the nested PAPR hcalls:
- H_GUEST_GET_CAPABILITIES which is used to query the capabilities
of the API and the L2 guests

spapr: nested: Introduce H_GUEST_[GET|SET]_CAPABILITIES hcalls.

Introduce the nested PAPR hcalls:
- H_GUEST_GET_CAPABILITIES which is used to query the capabilities
of the API and the L2 guests it provides.
- H_GUEST_SET_CAPABILITIES which is used to set the Guest API
capabilities that the Host Partition supports and may use.

[amachhiw: support for p9 compat mode and return register bug fixes]

Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Amit Machhiwal <amachhiw@linux.vnet.ibm.com>
Signed-off-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>

show more ...

spapr: nested: keep nested-hv related code restricted to its API.

spapr_exit_nested and spapr_get_pate_nested_hv contains code which
is specific to nested-hv API. Isolating code flows based on API
h

spapr: nested: keep nested-hv related code restricted to its API.

spapr_exit_nested and spapr_get_pate_nested_hv contains code which
is specific to nested-hv API. Isolating code flows based on API
helps extending it to be used with different API as well.

Suggested-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>

show more ...

spapr: nested: Introduce SpaprMachineStateNested to store related info.

Currently, nested_ptcr is being used by existing nested-hv API to store
nested guest related info. This need to be organised t

spapr: nested: Introduce SpaprMachineStateNested to store related info.

Currently, nested_ptcr is being used by existing nested-hv API to store
nested guest related info. This need to be organised to extend support
for the nested PAPR API which would need to store additional info
related to nested guests in next series of patches.

Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>

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spapr: nested: move nested part of spapr_get_pate into spapr_nested.c

Most of the nested code has already been moved to spapr_nested.c
This logic inside spapr_get_pate is related to nested guests an

spapr: nested: move nested part of spapr_get_pate into spapr_nested.c

Most of the nested code has already been moved to spapr_nested.c
This logic inside spapr_get_pate is related to nested guests and
better suited for spapr_nested.c, hence moving there.

Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>

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spapr: nested: register nested-hv api hcalls only for cap-nested-hv

Since cap-nested-hv is an optional capability, it makes sense to register
api specfic hcalls only when respective capability is en

spapr: nested: register nested-hv api hcalls only for cap-nested-hv

Since cap-nested-hv is an optional capability, it makes sense to register
api specfic hcalls only when respective capability is enabled. This
requires to introduce a new API to unregister hypercalls to maintain
sanity across guest reboot since caps are re-applied across reboots and
re-registeration of hypercalls would hit assert otherwise.

Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>

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Merge tag 'pull-ppc-20230626' of https://github.com/legoater/qemu into staging

ppc queue:

* New maintainers
* Nested implementation cleanups
* Various cleanups of the CPU implementation
* SMT suppo

Merge tag 'pull-ppc-20230626' of https://github.com/legoater/qemu into staging

ppc queue:

* New maintainers
* Nested implementation cleanups
* Various cleanups of the CPU implementation
* SMT support for pseries
* Improvements of the XIVE2 TIMA modeling
* Extra avocado tests for pseries

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# gpg: Good signature from "Cédric Le Goater <clg@kaod.org>" [undefined]
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* tag 'pull-ppc-20230626' of https://github.com/legoater/qemu: (30 commits)
tests/avocado: ppc test VOF bios Linux boot
pnv/xive2: Check TIMA special ops against a dedicated array for P10
pnv/xive2: Add a get_config() method on the presenter class
tests/avocado: Add ppc64 pseries multiprocessor boot tests
tests/avocado: boot ppc64 pseries to Linux VFS mount
spapr: TCG allow up to 8-thread SMT on POWER8 and newer CPUs
hw/ppc/spapr: Test whether TCG is enabled with tcg_enabled()
target/ppc: Add msgsnd/p and DPDES SMT support
target/ppc: Add support for SMT CTRL register
target/ppc: Add initial flags and helpers for SMT support
target/ppc: Fix sc instruction handling of LEV field
target/ppc: Better CTRL SPR implementation
target/ppc: Add ISA v3.1 LEV indication in SRR1 for system call interrupts
target/ppc: Implement HEIR SPR
target/ppc: Add SRR1 prefix indication to interrupt handlers
target/ppc: Change partition-scope translate interface
target/ppc: Fix instruction loading endianness in alignment interrupt
ppc/spapr: Move spapr nested HV to a new file
ppc/spapr: load and store l2 state with helper functions
ppc/spapr: Add a nested state struct
...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

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ppc/spapr: Move spapr nested HV to a new file

Create spapr_nested.c for most of the nested HV implementation.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Harsh Prateek Bora <har

ppc/spapr: Move spapr nested HV to a new file

Create spapr_nested.c for most of the nested HV implementation.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>

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