MIPS: math-emu: dsemul: Correct description of the emulation frame

Remove irrelevant content from the description of the emulation frame in
`mips_dsemul', referring to bare-metal configurations.  Update the text,
reflecting the change made with commit ba3049ed4086 ("MIPS: Switch FPU
emulator trap to BREAK instruction."), where we switched from using an
address error exception on an unaligned access to the use of a BREAK 514
instruction causing a breakpoint exception instead.

Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12176/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 2 insertions, 7 deletions

diff --git a/arch/mips/math-emu/dsemul.c b/arch/mips/math-emu/dsemul.c
index 77a623db3b38..bca7c4367ca4 100644
--- a/arch/mips/math-emu/dsemul.c
+++ b/arch/mips/math-emu/dsemul.c
@@ -78,13 +78,8 @@ int mips_dsemul(struct pt_regs *regs, mips_instruction ir, unsigned long cpc)
          * Algorithmics used a system call instruction, and
          * borrowed that vector.  MIPS/Linux version is a bit
          * more heavyweight in the interests of portability and
-         * multiprocessor support.  For Linux we generate a
-         * an unaligned access and force an address error exception.
-         *
-         * For embedded systems (stand-alone) we prefer to use a
-         * non-existing CP1 instruction. This prevents us from emulating
-         * branches, but gives us a cleaner interface to the exception
-         * handler (single entry point).
+         * multiprocessor support.  For Linux we use a BREAK 514
+         * instruction causing a breakpoint exception.
          */
         break_math = BREAK_MATH(get_isa16_mode(regs->cp0_epc));