[Qemu-devel] [PULL] Enable MTTCG for target/alpha

[Qemu-devel] [PULL] Enable MTTCG for target/alpha

[Richard Henderson]

Thanks to Alex for the heroics getting the patch set in.
This is a tiny follow-up to enable it for Alpha.


r~


The following changes since commit 8f2d7c341184a95d05476ea3c45dbae2b9ddbe51:

  Merge remote-tracking branch 'remotes/berrange/tags/pull-qcrypto-2017-02-27-1' into staging (2017-02-27 15:33:21 +0000)

are available in the git repository at:

  git://github.com/rth7680/qemu.git tags/pull-axp-20170228

for you to fetch changes up to 5ee4f3c2c750ce55f825116610beb3340daedeca:

  target/alpha: Enable MTTCG by default (2017-02-28 11:41:46 +1100)

----------------------------------------------------------------
Enable MTTCG for Alpha guest

----------------------------------------------------------------
Richard Henderson (1):
      target/alpha: Enable MTTCG by default

 configure          | 1 +
 target/alpha/cpu.h | 3 +++
 2 files changed, 4 insertions(+)

[Qemu-devel] [PULL] target/alpha: Enable MTTCG by default

[Richard Henderson]

Alpha has a weak memory ordering and issues all of the required barriers.

Signed-off-by: Richard Henderson <rth@twiddle.net>
---
 configure          | 1 +
 target/alpha/cpu.h | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/configure b/configure
index df58e91..6c21975 100755
--- a/configure
+++ b/configure
@@ -5894,6 +5894,7 @@ case "$target_name" in
     TARGET_BASE_ARCH=i386
   ;;
   alpha)
+    mttcg="yes"
   ;;
   arm|armeb)
     TARGET_ARCH=arm
diff --git a/target/alpha/cpu.h b/target/alpha/cpu.h
index b08d160..691ac00 100644
--- a/target/alpha/cpu.h
+++ b/target/alpha/cpu.h
@@ -28,6 +28,9 @@
 
 #define CPUArchState struct CPUAlphaState
 
+/* Alpha processors have a weak memory model */
+#define TCG_GUEST_DEFAULT_MO      (0)
+
 #include "exec/cpu-defs.h"
 
 #include "fpu/softfloat.h"
-- 
2.9.3

Re: [Qemu-devel] [PULL] Enable MTTCG for target/alpha

[Peter Maydell]

On 28 February 2017 at 00:46, Richard Henderson <rth@twiddle.net> wrote:
> Thanks to Alex for the heroics getting the patch set in.
> This is a tiny follow-up to enable it for Alpha.
>
>
> r~
>
>
> The following changes since commit 8f2d7c341184a95d05476ea3c45dbae2b9ddbe51:
>
>   Merge remote-tracking branch 'remotes/berrange/tags/pull-qcrypto-2017-02-27-1' into staging (2017-02-27 15:33:21 +0000)
>
> are available in the git repository at:
>
>   git://github.com/rth7680/qemu.git tags/pull-axp-20170228
>
> for you to fetch changes up to 5ee4f3c2c750ce55f825116610beb3340daedeca:
>
>   target/alpha: Enable MTTCG by default (2017-02-28 11:41:46 +1100)
>
> ----------------------------------------------------------------
> Enable MTTCG for Alpha guest
>
> ----------------------------------------------------------------

Applied, thanks.

-- PMM