[Qemu-devel] [PATCH 4/4] Disable "info irq" and "info pic" for target-ppc

[David Gibson <david@gibson.dropbear.id.au>]

The "info irq" and "info pic" HMP commands are available on some, but not
all targets, and what they do isn't terribly consistent.  For SPARC and
LM32 they do something platform specific, but for x86, powerpc, and MIPS
they print some information from the i8259 (and only the i8259) interrupt
controller.

It's debatable whether these commands are any use at all, and we should
probably make better, qdev aware ways of getting information from a
machines PICs.  However, those don't exist yet, so on x86 it's at least
potentially useful to have these HMP commands.  I can't speak for MIPS.

For ppc, though, the i8259, if it exists at all, is usually just a
secondary controller for legacy ISA.  The only case where i8259 is the
main system PIC on ppc is for the ancient and little-used PReP platform.

So, even without QOM-ish replacement, the info pic and info irq HMP
commands have no value on ppc.

This patch, therefore, disables these commands for ppc targets.  This will
allow ppc builds which don't include PReP to not include ISA bus support
either.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
 monitor.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/monitor.c b/monitor.c
index aeea2b5..8c56bfa 100644
--- a/monitor.c
+++ b/monitor.c
@@ -2573,7 +2573,7 @@ static mon_cmd_t info_cmds[] = {
         .help       = "show the command line history",
         .mhandler.cmd = hmp_info_history,
     },
-#if defined(TARGET_I386) || defined(TARGET_PPC) || defined(TARGET_MIPS) || \
+#if defined(TARGET_I386) || defined(TARGET_MIPS) || \
     defined(TARGET_LM32) || (defined(TARGET_SPARC) && !defined(TARGET_SPARC64))
     {
         .name       = "irq",
-- 
2.4.3