[lldb] Handle deref of register and implicit locations (#169419)
This commit modifies the dwarf expression evaluator in how we handle the
deref operation for register and implicit locations on the stack. For a
typical memory location a deref operation will read the value from
memory. For register and implicit locations the deref operation will
read the value from the register or its implicit location. In lldb we
eagerly read register and implicit values and push them on the stack so
the deref operation for these becomes a "no-op" that leaves the value on
the stack and updates the tracked location kind.
The motivation for this change is to handle `DW_OP_deref*` operations on
location descriptions as described by the heterogenious debugging
[extensions](https://rocm.docs.amd.com/projects/llvm-project/en/latest/LLVM/llvm/html/AMDGPUDwarfExtensionsForHeterogeneousDebugging.html#a-2-5-4-4-4-register-location-description-operations).
Specifically, for register locations it states
> These operations obtain a register location. To fetch the contents of
> a register, it is necessary to use DW_OP_regval_type, use one of the
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[mlir][AMDGPU][NFC] Fix overlapping masked load refinements (#159805)
The two paterns for handlig vector.maskedload on AMD GPUs had an overlap
- both the "scalar mask becomes an if statement" pattern and the "masked
loads become a normal load + a select on buffers" patterns could handle
a load with a broadcast mask on a fat buffer resource.
This commet add checks to resolve the overlap.
Reland "[lldb] Introduce ScriptedFrameProvider for real threads (#161870)" (#170236)
This patch re-lands #161870 with fixes to the previous test failures.
rdar://161834688
Signed-off-by: Med Ismail Bennani <ismail at bennani.ma>
kernel - Do readonly check in .d_open method in mmcsd(4) and virtio_blk(4).
* Makes read-write open fail properly for read-only storage in mmcsd(4) and
virtio_blk(4), instead of only resulting in transfer errors for the
disk writes.
LinuxKPI: 802.11: when synching HT and VHT cap, mask rx_mcs
When we sync the sta data, mask the rx_mcs with what the hardware is
able to do so that we do not leave, e.g., a 2nd stream enabled on a 1x1
chipset.
iwlwifi(4) has a further check for the smps_mode to limit to NSS=1 but
I believe that is historic and not actually in use anymore.
This fixes firmware crashes on TLC updates with nss=1 but the nss=2 array
index also being populated (with HT/VHT80/160 mcs information):
data being populated:
iwlwifi0: 0x20101A0D | ADVANCED_SYSASSERT
iwlwifi0: 0x00000006 | umac data1
iwlwifi0: 0x00000001 | umac data2
iwlwifi0: 0x000003FF | umac data3
iwlwifi0: 0x____050F | last host cmd
Reported by: Claudio Zumbo (claudiozumbo gmail.com), Erik Power
Tested by: Claudio Zumbo, Erik Power (eppower umich.edu)
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LinuxKPI: 802.11: when synching HT and VHT cap, mask rx_mcs
When we sync the sta data, mask the rx_mcs with what the hardware is
able to do so that we do not leave, e.g., a 2nd stream enabled on a 1x1
chipset.
iwlwifi(4) has a further check for the smps_mode to limit to NSS=1 but
I believe that is historic and not actually in use anymore.
This fixes firmware crashes on TLC updates with nss=1 but the nss=2 array
index also being populated (with HT/VHT80/160 mcs information):
data being populated:
iwlwifi0: 0x20101A0D | ADVANCED_SYSASSERT
iwlwifi0: 0x00000006 | umac data1
iwlwifi0: 0x00000001 | umac data2
iwlwifi0: 0x000003FF | umac data3
iwlwifi0: 0x____050F | last host cmd
Reported by: Claudio Zumbo (claudiozumbo gmail.com), Erik Power
Tested by: Claudio Zumbo, Erik Power (eppower umich.edu)
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LinuxKPI: pci: undo the pci_resource_len() check in lkpi_pci_request_region()
Creating non-passthru SR-IOV interfaces on a mlx5en(4) failed.
The problem lies in the pci_resource_len() call but not that the BAR length
is tmeporary 0 but in that we call lkpi_pci_get_bar() with a true argument
which will create the BAR resource for us and report the approriate length
back. However, the later call to bus_alloc_resource_any() will then fail
given the resource already exists.
Restore the previous behaviour and let bus_alloc_resource_any() do the
work. Adjust the return values from -ENODEV to -EBUSY to match callers
expectations.
In linuxkpi_pcim_request_all_regions(), like in linuxkpi_pci_request_regions(),
filter out the -EBUSY errors as "not an error" and try the next bar.
This also seems to be consistent with the expectations of the callers.
PR: 290793
Reported by: David BOYER (jcduss13 gmail.com)
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LinuxKPI: pci: undo the pci_resource_len() check in lkpi_pci_request_region()
Creating non-passthru SR-IOV interfaces on a mlx5en(4) failed.
The problem lies in the pci_resource_len() call but not that the BAR length
is tmeporary 0 but in that we call lkpi_pci_get_bar() with a true argument
which will create the BAR resource for us and report the approriate length
back. However, the later call to bus_alloc_resource_any() will then fail
given the resource already exists.
Restore the previous behaviour and let bus_alloc_resource_any() do the
work. Adjust the return values from -ENODEV to -EBUSY to match callers
expectations.
In linuxkpi_pcim_request_all_regions(), like in linuxkpi_pci_request_regions(),
filter out the -EBUSY errors as "not an error" and try the next bar.
This also seems to be consistent with the expectations of the callers.
PR: 290793
Reported by: David BOYER (jcduss13 gmail.com)
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[AMDGPU] Fix AGPR_32 reg assign for mfma scale ops (#168964)
In MFMA rewrite pass, prevent AGPR_32 reg class assignment for scale
operands, not permitted by instruction format.
---------
Co-authored-by: Matt Arsenault <arsenm2 at gmail.com>
[lldb/Target] Add BorrowedStackFrame and make StackFrame methods virtual (#170191)
This change makes StackFrame methods virtual to enable subclass
overrides and introduces BorrowedStackFrame, a wrapper that presents an
existing StackFrame with a different frame index.
This enables creating synthetic frame views or renumbering frames
without copying the underlying frame data, which is useful for frame
manipulation scenarios.
This also adds a new borrowed-info format entity to show what was the
original frame index of the borrowed frame.
Signed-off-by: Med Ismail Bennani <ismail at bennani.ma>
NAS-138309 / 26.04 / Make sure containers work in HA (#17727)
## Context
Validation has been added to prevent containers being used in HA if the
system is not licensed for it (license logic has been copied over from
what we had in virt plugin for containers). Also we will try to
gracefully stop containers on failover (like we do for VMs/apps) but
won't block failover and similarly on master we will make sure that if
any container is set to start on boot - it gets started appropriately.
[SPIRV] Error for zero-length arrays if not a shader (#169732)
I had a case where the frontend was generating a zero elem array in
non-shader code so it was just crashing in a release build.
Add a real error and make it not crash.
---------
Signed-off-by: Nick Sarnie <nick.sarnie at intel.com>
syscons - Add 16bit rendering code for UEFI and KMS driver framebuffers.
This fixes syscons rendering with KMS graphics drivers, when the driver
hands us a 16bit console framebuffer.
