diff options
| author | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2017-12-08 21:15:30 +0300 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2017-12-08 21:15:30 +0300 |
| commit | 6647852abc1fd74e9c5e0dcf404ea4cb9c929630 (patch) | |
| tree | 371aa801a5a211f5f8af87bd5488e3dae75ea975 /drivers/misc/cxl/api.c | |
| parent | 3e72be177cf19ab3d62b3084d424dce7e71d847f (diff) | |
| parent | 3f1f0b1c57dd617e9b0ded50efb8d6c011b85b20 (diff) | |
| download | linux-6647852abc1fd74e9c5e0dcf404ea4cb9c929630.tar.xz | |
Merge airlied/drm-next into drm-intel-next-queued
Chris requested this backmerge for a reconciliation on
drm_print.h between drm-misc-next and drm-intel-next-queued
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'drivers/misc/cxl/api.c')
| -rw-r--r-- | drivers/misc/cxl/api.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/misc/cxl/api.c b/drivers/misc/cxl/api.c index a0c44d16bf30..7c11bad5cded 100644 --- a/drivers/misc/cxl/api.c +++ b/drivers/misc/cxl/api.c @@ -15,6 +15,7 @@ #include <linux/module.h> #include <linux/mount.h> #include <linux/sched/mm.h> +#include <linux/mmu_context.h> #include "cxl.h" @@ -331,9 +332,12 @@ int cxl_start_context(struct cxl_context *ctx, u64 wed, /* ensure this mm_struct can't be freed */ cxl_context_mm_count_get(ctx); - /* decrement the use count */ - if (ctx->mm) + if (ctx->mm) { + /* decrement the use count from above */ mmput(ctx->mm); + /* make TLBIs for this context global */ + mm_context_add_copro(ctx->mm); + } } /* @@ -342,13 +346,19 @@ int cxl_start_context(struct cxl_context *ctx, u64 wed, */ cxl_ctx_get(); + /* See the comment in afu_ioctl_start_work() */ + smp_mb(); + if ((rc = cxl_ops->attach_process(ctx, kernel, wed, 0))) { put_pid(ctx->pid); ctx->pid = NULL; cxl_adapter_context_put(ctx->afu->adapter); cxl_ctx_put(); - if (task) + if (task) { cxl_context_mm_count_put(ctx); + if (ctx->mm) + mm_context_remove_copro(ctx->mm); + } goto out; } |