This used to be about the 0x4300 handler, but that was moved in commit
da2bc4644c75 ("powerpc/64s: Add new exception vector macros").

Note that "STAB" here refers to "Segment Table" not the debug format.

Signed-off-by: Michael Ellerman <m...@ellerman.id.au>
---
 arch/powerpc/kernel/exceptions-64s.S | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/arch/powerpc/kernel/exceptions-64s.S 
b/arch/powerpc/kernel/exceptions-64s.S
index 3d0dc133a9ae..8088134ccb2a 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -3044,12 +3044,6 @@ MASKED_INTERRUPT hsrr=1
         * to HV=1 from HV=0 is delivered via real mode handlers.
         */
 
-       /*
-        * This uses the standard macro, since the original 0x300 vector
-        * only has extra guff for STAB-based processors -- which never
-        * come here.
-        */
-
 USE_FIXED_SECTION(virt_trampolines)
        /*
         * All code below __end_soft_masked is treated as soft-masked. If
-- 
2.37.3

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