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| author | Alastair D'Silva <alastair@d-silva.org> | 2019-06-20 07:12:01 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-07-03 22:29:47 +0300 |
| commit | 60e8523e2ea18dc0c0cea69d6c1d69a065019062 (patch) | |
| tree | ff0c7696430960d500575631703f84e57f10ef37 /arch/powerpc | |
| parent | 7ce98fb6c53d2311b3e9faae90b1a9c1a96534db (diff) | |
| download | linux-60e8523e2ea18dc0c0cea69d6c1d69a065019062.tar.xz | |
ocxl: Allow contexts to be attached with a NULL mm
If an OpenCAPI context is to be used directly by a kernel driver, there
may not be a suitable mm to use.
The patch makes the mm parameter to ocxl_context_attach optional.
Signed-off-by: Alastair D'Silva <alastair@d-silva.org>
Acked-by: Andrew Donnellan <ajd@linux.ibm.com>
Acked-by: Frederic Barrat <fbarrat@linux.ibm.com>
Acked-by: Nicholas Piggin <npiggin@gmail.com>
Link: https://lore.kernel.org/r/20190620041203.12274-1-alastair@au1.ibm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/mm/book3s64/radix_tlb.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/powerpc/mm/book3s64/radix_tlb.c b/arch/powerpc/mm/book3s64/radix_tlb.c index bb9835681315..ce8a77fae6a7 100644 --- a/arch/powerpc/mm/book3s64/radix_tlb.c +++ b/arch/powerpc/mm/book3s64/radix_tlb.c @@ -666,6 +666,11 @@ EXPORT_SYMBOL(radix__flush_tlb_page); #define radix__flush_all_mm radix__local_flush_all_mm #endif /* CONFIG_SMP */ +/* + * If kernel TLBIs ever become local rather than global, then + * drivers/misc/ocxl/link.c:ocxl_link_add_pe will need some work, as it + * assumes kernel TLBIs are global. + */ void radix__flush_tlb_kernel_range(unsigned long start, unsigned long end) { _tlbie_pid(0, RIC_FLUSH_ALL); |