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Re: [Qemu-devel] [PULL v2 43/60] i386: drop FDC in pc-q35-2.4+ if neithe


From: Markus Armbruster
Subject: Re: [Qemu-devel] [PULL v2 43/60] i386: drop FDC in pc-q35-2.4+ if neither it nor floppy drives are wanted
Date: Fri, 19 Jun 2015 09:01:54 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux)

"Michael S. Tsirkin" <address@hidden> writes:

> From: Laszlo Ersek <address@hidden>
>
> It is Very annoying to carry forward an outdatEd coNtroller with a mOdern
> Machine type.
>
> Hence, let us not instantiate the FDC when all of the following apply:
> - the machine type is pc-q35-2.4 or later,
> - "-device isa-fdc" is not passed on the command line (nor in the config
>   file),
> - no "-drive if=floppy,..." is requested.
>
> Cc: Markus Armbruster <address@hidden>
> Cc: Paolo Bonzini <address@hidden>
> Cc: Gerd Hoffmann <address@hidden>
> Cc: John Snow <address@hidden>
> Cc: "Gabriel L. Somlo" <address@hidden>
> Cc: "Michael S. Tsirkin" <address@hidden>
> Cc: Kevin Wolf <address@hidden>
> Cc: address@hidden
> Suggested-by: Markus Armbruster <address@hidden>
> Signed-off-by: Laszlo Ersek <address@hidden>
> Acked-by: Paolo Bonzini <address@hidden>
> Reviewed-by: Michael S. Tsirkin <address@hidden>
> Signed-off-by: Michael S. Tsirkin <address@hidden>
> Reviewed-by: Markus Armbruster <address@hidden>
> ---
>  hw/i386/pc_q35.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
> index 9f036c8..66220b3 100644
> --- a/hw/i386/pc_q35.c
> +++ b/hw/i386/pc_q35.c
> @@ -392,6 +392,7 @@ static void pc_q35_2_4_machine_options(MachineClass *m)
>      pc_q35_machine_options(m);
>      m->default_machine_opts = "firmware=bios-256k.bin";
>      m->default_display = "std";
> +    m->no_floppy = 1;
>      m->alias = "q35";
>  }

Botched merge, see [PATCH] q35: Re-enable FDC on pc-q35-2.3 and older.

Your merge is closer to a rewrite than to conflict resolution, rendering
my R-by totally meaningless.

In the future, please either fully test such a merge, or ask the
submitter / reviewers to review and test.

For comparison, this is the patch that got actually reviewed and tested:

diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index ad014e7..671ae69 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -424,7 +424,8 @@ static void pc_q35_init_1_4(MachineState *machine)
 #define PC_Q35_2_4_MACHINE_OPTIONS                      \
     PC_Q35_MACHINE_OPTIONS,                             \
     .default_machine_opts = "firmware=bios-256k.bin",   \
-    .default_display = "std"
+    .default_display = "std",                           \
+    .no_floppy = 1
 
 static QEMUMachine pc_q35_machine_v2_4 = {
     PC_Q35_2_4_MACHINE_OPTIONS,
@@ -433,7 +434,10 @@ static QEMUMachine pc_q35_machine_v2_4 = {
     .init = pc_q35_init,
 };
 
-#define PC_Q35_2_3_MACHINE_OPTIONS PC_Q35_2_4_MACHINE_OPTIONS
+#define PC_Q35_2_3_MACHINE_OPTIONS                      \
+    PC_Q35_MACHINE_OPTIONS,                             \
+    .default_machine_opts = "firmware=bios-256k.bin",   \
+    .default_display = "std"
 
 static QEMUMachine pc_q35_machine_v2_3 = {
     PC_Q35_2_3_MACHINE_OPTIONS,



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