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drm/amdkfd: Module option to disable CRAT table

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Some systems have broken CRAT tables. Add a module option to ignore
a CRAT table.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This commit is contained in:
Felix Kuehling 2017-12-08 23:09:03 -05:00 committed by Oded Gabbay
parent 413e85d5d3
commit ebcfd1e276
3 changed files with 16 additions and 0 deletions
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5
drivers/gpu/drm/amd/amdkfd/kfd_crat.c
View File

@ -696,6 +696,11 @@ int kfd_create_crat_image_acpi(void **crat_image, size_t *size)
return -EINVAL;
}
if (ignore_crat) {
pr_info("CRAT table disabled by module option\n");
return -ENODATA;
}
pcrat_image = kmalloc(crat_table->length, GFP_KERNEL);
if (!pcrat_image)
return -ENOMEM;

5
drivers/gpu/drm/amd/amdkfd/kfd_module.c
View File

@ -69,6 +69,11 @@ module_param(send_sigterm, int, 0444);
MODULE_PARM_DESC(send_sigterm,
"Send sigterm to HSA process on unhandled exception (0 = disable, 1 = enable)");
int ignore_crat;
module_param(ignore_crat, int, 0444);
MODULE_PARM_DESC(ignore_crat,
"Ignore CRAT table during KFD initialization (0 = use CRAT (default), 1 = ignore CRAT)");
static int amdkfd_init_completed;
int kgd2kfd_init(unsigned int interface_version,

6
drivers/gpu/drm/amd/amdkfd/kfd_priv.h
View File

@ -104,6 +104,12 @@ extern int cwsr_enable;
*/
extern int send_sigterm;
/*
* Ignore CRAT table during KFD initialization, can be used to work around
* broken CRAT tables on some AMD systems
*/
extern int ignore_crat;
/**
* enum kfd_sched_policy
*