openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

cxl: Early return from cxl_handle_fault for a shut down context 

If a context is being detached and we get a translation fault for it
there is little point getting it's mm and handling the fault, so just
respond with an address error and return earlier.

Signed-off-by: Ian Munsie <imunsie@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Ian Munsie 2014-12-08 19:17:58 +11:00 committed by Michael Ellerman
parent 456295e284
commit 13da704682
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/misc/cxl/fault.c
View File

@ -180,6 +180,12 @@ void cxl_handle_fault(struct work_struct *fault_work)
return;
}
/* Early return if the context is being / has been detached */
if (ctx->status == CLOSED) {
cxl_ack_ae(ctx);
return;
}
pr_devel("CXL BOTTOM HALF handling fault for afu pe: %i. "
"DSISR: %#llx DAR: %#llx\n", ctx->pe, dsisr, dar);