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target/ppc: Retain hflags_nmsr only for migration

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We have eliminated all normal uses of hflags_nmsr.  We need
not even compute it except when we want to migrate.  Rename
the field to emphasize this.

Remove the fixme comment for migrating access_type.  This value
is only ever used with the current executing instruction, and
is never live when the cpu is halted for migration.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210315184615.1985590-6-richard.henderson@linaro.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Richard Henderson 2021-03-15 12:46:03 -06:00 • committed by David Gibson
parent da77d2b037
commit f7a7b6525c
3 changed files with 8 additions and 7 deletions
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2
target/ppc/helper_regs.c
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@ -104,8 +104,6 @@ void hreg_compute_hflags(CPUPPCState *env)
*/
uint32_t le = extract32(env->spr[SPR_HID0], 3, 1);
env->hflags |= le << MSR_LE;
/* Retain for backward compatibility with migration. */
env->hflags_nmsr = le << MSR_LE;
}
}