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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-08 04:21:33 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-08 04:21:33 +0000 |
| commit | 282c335ad1bf4d21fcedff132e19995c24c09adc (patch) | |
| tree | d24dc7bfbb3a6b4bfd5b46964347ada86f72d751 /arch/arc/mm/tlbex.S | |
| parent | Adding upstream version 4.19.289. (diff) | |
| download | linux-upstream.tar.xz linux-upstream.zip | |
Adding upstream version 4.19.304.upstream/4.19.304upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arc/mm/tlbex.S')
| -rw-r--r-- | arch/arc/mm/tlbex.S | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/arc/mm/tlbex.S b/arch/arc/mm/tlbex.S index 0e1e47a67..e50cac799 100644 --- a/arch/arc/mm/tlbex.S +++ b/arch/arc/mm/tlbex.S @@ -396,6 +396,17 @@ EV_TLBMissD_fast_ret: ; additional label for VDK OS-kit instrumentation ;-------- Common routine to call Linux Page Fault Handler ----------- do_slow_path_pf: +#ifdef CONFIG_ISA_ARCV2 + ; Set Z flag if exception in U mode. Hardware micro-ops do this on any + ; taken interrupt/exception, and thus is already the case at the entry + ; above, but ensuing code would have already clobbered. + ; EXCEPTION_PROLOGUE called in slow path, relies on correct Z flag set + + lr r2, [erstatus] + and r2, r2, STATUS_U_MASK + bxor.f 0, r2, STATUS_U_BIT +#endif + ; Restore the 4-scratch regs saved by fast path miss handler TLBMISS_RESTORE_REGS |