nvidia-tegra-modules.git/drivers/virt/tegra, branch gpu-paging

inject-vm-err: Force panic on synchronous exceptions

2020-11-23T20:54:01+00:00

This patch ensures that the kernel panics when it returns from handling an
injected synchronous error and has set bad_mode = true.

Earlier, this was dependent on the kernel being in IRQ context, but this is not
always the case.

Bug 3041628

Change-Id: I6d6011c4bed769bd3cbae5237b11927304c9c079
Signed-off-by: Andre Richter 
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2449678
Tested-by: mobile promotions 
Reviewed-by: automaticguardword 
Reviewed-by: Rohit Upadhyay 
Reviewed-by: mobile promotions 
GVS: Gerrit_Virtual_Submit

tegra-hv-err-handler: Add a warning message

2020-09-03T16:10:55+00:00

Prints a specific warning message if error injection is not enabled in PCT

Bug 200650876

Change-Id: I219d42d16287df0c63dfac02f5b6cd0ffc149b4b
Signed-off-by: Smriti Sharma 
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2407247
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: automaticguardword 
Reviewed-by: Hardik T Shah 
Reviewed-by: Phoenix Jung 
Reviewed-by: mobile promotions 
GVS: Gerrit_Virtual_Submit
Tested-by: mobile promotions

vmerr handler: platform resources fix

2020-03-23T08:08:57+00:00

Current code copied struct device and performed operations on it
Instead, we should do devm_... calls with pointer to original device

Bug 2835333

Change-Id: I9d26573b009783e0b32de9742282fd8f83ca583a
Signed-off-by: dmitry pervushin 
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2290442
(cherry picked from commit 4d9f8faba698dbad94342d34166ad7cb2507de6f)
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2315429
Reviewed-by: automaticguardword 
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Hardik T Shah 
Reviewed-by: Phoenix Jung 
Reviewed-by: mobile promotions 
Tested-by: mobile promotions 
GVS: Gerrit_Virtual_Submit

Err-inject: Handle generic sync exception reports

2020-02-21T22:40:30+00:00

This change extends the existing minimal placeholder sample handler for
injected synchronous exceptions. It now consumes a generic sync exception
report and, showcases how the information can be used to decode the
exceptions further using two minimal examples (Data Abort and Instr Abort).

This needs to be used only as a reference for any customized elaborate
error handling that may be needed.

JIRA ESV-312
Bug 2580803

Change-Id: I32cf2322a6002ac00071d3246a32a17eb37165c3
Signed-off-by: Andre Richter 
(cherry picked from commit 9ce3c05e425607a1acf0a28ea75258fb66f06820)
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2300616
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Dmitry Pervushin 
Reviewed-by: Rohit Upadhyay 
Reviewed-by: mobile promotions 
Tested-by: mobile promotions 
GVS: Gerrit_Virtual_Submit

inject-vm-err: T19x MC error handler

2020-01-24T07:42:16+00:00

- Add support to handle Memory Controller errors on
  on t19x.
- This change adds a sample handler for MC errors.
  It is a minimal handler that just dumps error
  information to the console. This can be used as
  a reference to implement an elaborate error
  handler.

Bug 2580803

Change-Id: Ib86b925125650b4812fdbee5310455ae95ccd83c
(cherry picked from commit 6c8395d11872f79ab5819a9900cb40b8f946852e)
Signed-off-by: Potharaju Ravi Teja 
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2279875
Tested-by: mobile promotions 
Reviewed-by: mobile promotions

inject-vm-err: CBB error handler

2020-01-24T07:41:56+00:00

Add support to handle control back bone errors.

- This change adds a sample handler for cbb error.
  It is a minimal handler that just dumps error
  information to the console. This can be used as
  a reference to implement an elaborate error
  handler.

Bug 2580803

Change-Id: I2fbbc994854611a54276068ee90f1d2cffeeb948
(cherry picked from commit ea898756f7b2e4aff8f89546f3b69fc4e97fd300)
Signed-off-by: Potharaju Ravi Teja 
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2279874
GVS: Gerrit_Virtual_Submit
Tested-by: mobile promotions 
Reviewed-by: Dmitry Pervushin 
Reviewed-by: Rohit Upadhyay 
Reviewed-by: mobile promotions

Dyn tracing: Support toggling trace event mask

2020-01-04T07:24:27+00:00

  - Add new sysfs node /sys/hvc/trace_mask.
  - Add read/write support on the node.
  - Add trace_mask node only if the vm has permission to access trace
    event mask.
  - Add hyp_trace_get_mask/hyp_trace_set_mask HVC interfaces.

This code is ported from Jira HYP-3503. Original commit:
  - commit e634fc4f610e54682f057a67660a315e233aa5e2 ("original")
    - https://git-master.nvidia.com/r/2147736

Bug 2693193

Change-Id: I2d906bcf69e4056d833f835e52aebd755c9b5148
Signed-off-by: Andre Richter 
Reviewed-on: https://git-master.nvidia.com/r/2235155
(cherry picked from commit 5c68739d2db2f20bb0d82cda1b15176682d309c8)
Reviewed-on: https://git-master.nvidia.com/r/2229462
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Dmitry Pervushin 
Tested-by: Yashomati Godbole 
GVS: Gerrit_Virtual_Submit
Reviewed-by: Rohit Upadhyay 
Reviewed-by: mobile promotions 
Tested-by: mobile promotions

inject-vm-err: misc. improvements

2019-12-24T19:59:10+00:00

- Prevented bad mode entry for unassigned offender as no point
  in rebooting the Privileged guest in that case.
- Made the driver to fire build bug if sizes of structures
  shared with HV code are out of sync.
- Replaced enum variables with unsigned int in err_data structure
  members to avoid ambiguity in size used by HV and Linux compilers
  for enum.
- Renamed variables from camelCase to small_case, added tegra-hv
  prefix, etc.
- Removed sending of redundant parameter while sending ack for
  sync error.
- Added #undef _X5,6,7_X17 for completeness that was missed earlier.

JIRA ESV-312
Bug 2580803

Change-Id: Ibf49c80a2e781dd75faadd96813b9c19e31e68bf
Signed-off-by: Yashomati 
Reviewed-on: https://git-master.nvidia.com/r/2228786
(cherry picked from commit 7364fbd8661997c98a4d9fa036ad3a5659fe319e)
Reviewed-on: https://git-master.nvidia.com/r/2254757
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Dmitry Pervushin 
Reviewed-by: Hardik T Shah 
Reviewed-by: Rohit Upadhyay 
Reviewed-by: mobile promotions 
Tested-by: mobile promotions

inject-vm-err: handlers for injected errors

2019-12-24T19:56:43+00:00

If Linux/EBP causes an error that HV can't handle,
then instead of freezing the guest, HV injects the
error back into the guest. This enables the guest
to handle the error as gracefully as it can/needs.

This changeset provides 2 parts:
1. sample handlers: minimal placeholder handlers that
just dump the error information on to the console. This
is to be used as a reference for any customized elaborate
error handling that may be needed.

2. library module: it comes into existence only if/when
any error handler is registered. Its main responsibilities:
- map memory that's shared with HV where HV dumps all
information about the errors.
- register handlers for interrupts used by HV to inject
errors
- invoke custom error handlers when HV injects error

JIRA ESV-312
Bug 2580803

Change-Id: Ia8c6484d423fd33cabbfd901f0f6ebb0da95cb40
Signed-off-by: Yashomati 
Reviewed-on: https://git-master.nvidia.com/r/2214402
Reviewed-on: https://git-master.nvidia.com/r/2128765
GVS: Gerrit_Virtual_Submit
Reviewed-by: Dmitry Pervushin 
Reviewed-by: Hardik T Shah 
Reviewed-by: Rohit Upadhyay 
Reviewed-by: mobile promotions 
Tested-by: mobile promotions

Linux Kernel: Add sysfs nodes for nvlog feature

2019-11-09T19:09:16+00:00

Bug 200543390

Change-Id: I4a0f4a54a1d0f19aff6eb2b7da5abb3f56192640
Signed-off-by: Hardik Tushar Shah 
Reviewed-on: https://git-master.nvidia.com/r/2207230
Reviewed-by: Dmitry Pervushin 
Reviewed-by: Phoenix Jung 
Reviewed-by: Rohit Upadhyay 
Reviewed-by: mobile promotions 
Tested-by: mobile promotions