diff mbox

fix qemu-kvm to build when gdbstub is disabled

Message ID 4A02D539.6040705@sgi.com (mailing list archive)
State New, archived
Headers show

Commit Message

Jes Sorensen May 7, 2009, 12:34 p.m. UTC
Avi Kivity wrote:
> I agree, unless
> 
> - we want to make gdbstub support configurable (don't see any 
> overwhelming reason for this, but maybe others do)
> - we want to merge ia64 kvm support upstream, and don't want to impose 
> gdbstub support (though I'd recommend properly implementing gdbstub)
> 
> In any case, I'm okay with dropping the check upstream and applying the 
> local fixup.

Hi,

Here's a patch that fixes the #ifndef to make it the #ifdef as it was
intended.

I am quite fine with us trying to drop all the #ifdefs and introduce
noop wrappers for archs that do not provide the gdbstubs (ie. ia64), but
to start with we better just fix the #ifndef to make it behave like it
was originally intended.

Cheers,
Jes

Comments

Jan Kiszka May 7, 2009, 12:59 p.m. UTC | #1
Jes Sorensen wrote:
> Avi Kivity wrote:
>> I agree, unless
>>
>> - we want to make gdbstub support configurable (don't see any
>> overwhelming reason for this, but maybe others do)
>> - we want to merge ia64 kvm support upstream, and don't want to impose
>> gdbstub support (though I'd recommend properly implementing gdbstub)
>>
>> In any case, I'm okay with dropping the check upstream and applying
>> the local fixup.
> 
> Hi,
> 
> Here's a patch that fixes the #ifndef to make it the #ifdef as it was
> intended.
> 
> I am quite fine with us trying to drop all the #ifdefs and introduce
> noop wrappers for archs that do not provide the gdbstubs (ie. ia64), but
> to start with we better just fix the #ifndef to make it behave like it
> was originally intended.

As the original change this patch (correctly) fixes broke gdbstub
support in qemu-kvm for all archs + it is still a deviation from
upstream, please take the chance and go for ia64 stubs.

BTW, I'm planning to submit a cleanup patch for CONFIG_GDBSTUB to
upstream soon.

Jan
Jes Sorensen May 7, 2009, 1:03 p.m. UTC | #2
Jan Kiszka wrote:
> As the original change this patch (correctly) fixes broke gdbstub
> support in qemu-kvm for all archs + it is still a deviation from
> upstream, please take the chance and go for ia64 stubs.

Jan,

There's far more to do in upstream than just gdbstubs for ia64 to be
usable :-(

We'll get to gdbstubs at some point, but there's too many other higher
priority items to deal with first.

Cheers,
Jes
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Jan Kiszka May 7, 2009, 1:07 p.m. UTC | #3
Jes Sorensen wrote:
> Jan Kiszka wrote:
>> As the original change this patch (correctly) fixes broke gdbstub
>> support in qemu-kvm for all archs + it is still a deviation from
>> upstream, please take the chance and go for ia64 stubs.
> 
> Jan,
> 
> There's far more to do in upstream than just gdbstubs for ia64 to be
> usable :-(
> 
> We'll get to gdbstubs at some point, but there's too many other higher
> priority items to deal with first.

I'm not asking for full gdbstub support at this point, just for a build
workaround at arch-level (or in arch-specific blocks, in gdbstub.c e.g.)
instead of patching generic code with global risk of regressions.

Jan
Jes Sorensen May 7, 2009, 1:31 p.m. UTC | #4
Jan Kiszka wrote:
> I'm not asking for full gdbstub support at this point, just for a build
> workaround at arch-level (or in arch-specific blocks, in gdbstub.c e.g.)
> instead of patching generic code with global risk of regressions.

Oh, I see.

I already submitted that to Avi, making gdb_set_stop_cpu() a noop on
ia64. Since there's no target-ia64/ directory in mainline qemu.git yet,
that fix will have to live in qemu-kvm for the time being.

I am fine if you wish to remove all the #ifdef CONFIG_GDBSTUB bits.

Cheers,
Jes

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diff mbox

Patch

Fix incorrect #ifndef for CONFIG_GETSTUB, which should have been an
#ifdef.

Signed-off-by: Jes Sorensen <jes@sgi.com>

---
 vl.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: qemu/vl.c
===================================================================
--- qemu.orig/vl.c
+++ qemu/vl.c
@@ -4350,7 +4350,7 @@ 
         }
         if (cpu_can_run(env))
             ret = qemu_cpu_exec(env);
-#ifndef CONFIG_GDBSTUB
+#ifdef CONFIG_GDBSTUB
         if (ret == EXCP_DEBUG) {
             gdb_set_stop_cpu(env);
             debug_requested = 1;