diff mbox

[Wily,SRY,v2] UBUNTU: [Config] ARMV8_DEPRECATED=y

Message ID 1455630348-7146-1-git-send-email-tim.gardner@canonical.com
State New
Headers show

Commit Message

Tim Gardner Feb. 16, 2016, 1:45 p.m. UTC 
From: Tim Gardner <tim.gardner@canonical.com>

BugLink: http://bugs.launchpad.net/bugs/1545542

Linux now supports emulation of three deprecated ARMv7 features that
were removed from ARMv8: SWP(B), CP15ISB/DSB/DMB, and SETEND. At least
CP15DMB is used by some armhf archive binaries (notably pandoc), so
we need emulation enabled on the kernels that scalingstack uses.

I haven't checked which version added which, but they appeared some
time between 3.13 and 4.2, and I only care about 4.2 onwards. So please
enable ARMV8_DEPRECATED, SWP_EMULATION, CP15_BARRIER_EMULATION and
SETEND_EMULATION in arm64 kernels for wily onwards.

William Grant

Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
---
 debian.master/config/config.common.ubuntu | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

Comments

Stefan Bader Feb. 16, 2016, 1:48 p.m. UTC | #1 
On 16.02.2016 14:45, tim.gardner@canonical.com wrote:
> From: Tim Gardner <tim.gardner@canonical.com>
> 
> BugLink: http://bugs.launchpad.net/bugs/1545542
> 
> Linux now supports emulation of three deprecated ARMv7 features that
> were removed from ARMv8: SWP(B), CP15ISB/DSB/DMB, and SETEND. At least
> CP15DMB is used by some armhf archive binaries (notably pandoc), so
> we need emulation enabled on the kernels that scalingstack uses.
> 
> I haven't checked which version added which, but they appeared some
> time between 3.13 and 4.2, and I only care about 4.2 onwards. So please
> enable ARMV8_DEPRECATED, SWP_EMULATION, CP15_BARRIER_EMULATION and
> SETEND_EMULATION in arm64 kernels for wily onwards.
> 
> William Grant
> 
> Signed-off-by: Tim Gardner <tim.gardner@canonical.com>

Thank you for listening to an old grumpy pigheaded fellow. :)
> ---
>  debian.master/config/config.common.ubuntu | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/debian.master/config/config.common.ubuntu b/debian.master/config/config.common.ubuntu
> index 2aad952..9cc178a 100644
> --- a/debian.master/config/config.common.ubuntu
> +++ b/debian.master/config/config.common.ubuntu
> @@ -466,7 +466,7 @@ CONFIG_ARMADA_38X_CLK=y
>  CONFIG_ARMADA_39X_CLK=y
>  CONFIG_ARMADA_THERMAL=y
>  CONFIG_ARMADA_XP_CLK=y
> -# CONFIG_ARMV8_DEPRECATED is not set
> +CONFIG_ARMV8_DEPRECATED=y
>  CONFIG_ARM_AMBA=y
>  CONFIG_ARM_APPENDED_DTB=y
>  CONFIG_ARM_ARCH_TIMER=y
> @@ -1385,6 +1385,7 @@ CONFIG_CORENET_GENERIC=y
>  # CONFIG_CORESIGHT is not set
>  CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
>  CONFIG_COSA=m
> +CONFIG_CP15_BARRIER_EMULATION=y
>  # CONFIG_CPA_DEBUG is not set
>  CONFIG_CPM=y
>  CONFIG_CPM2=y
> @@ -6874,6 +6875,7 @@ CONFIG_SERIO_PS2MULT=m
>  CONFIG_SERIO_RAW=m
>  CONFIG_SERIO_SERPORT=m
>  CONFIG_SERIO_XILINX_XPS_PS2=m
> +CONFIG_SETEND_EMULATION=y
>  CONFIG_SFC=m
>  CONFIG_SFC_MCDI_LOGGING=y
>  CONFIG_SFC_MCDI_MON=y
> @@ -7557,6 +7559,7 @@ CONFIG_SWAP=y
>  CONFIG_SWIOTLB=y
>  CONFIG_SWIOTLB_XEN=y
>  CONFIG_SWP_EMULATE=y
> +CONFIG_SWP_EMULATION=y
>  CONFIG_SX9500=m
>  CONFIG_SXGBE_ETH=m
>  CONFIG_SYNCLINK=m
>
diff mbox

Patch

diff --git a/debian.master/config/config.common.ubuntu b/debian.master/config/config.common.ubuntu
index 2aad952..9cc178a 100644
--- a/debian.master/config/config.common.ubuntu
+++ b/debian.master/config/config.common.ubuntu
@@ -466,7 +466,7 @@  CONFIG_ARMADA_38X_CLK=y
 CONFIG_ARMADA_39X_CLK=y
 CONFIG_ARMADA_THERMAL=y
 CONFIG_ARMADA_XP_CLK=y
-# CONFIG_ARMV8_DEPRECATED is not set
+CONFIG_ARMV8_DEPRECATED=y
 CONFIG_ARM_AMBA=y
 CONFIG_ARM_APPENDED_DTB=y
 CONFIG_ARM_ARCH_TIMER=y
@@ -1385,6 +1385,7 @@  CONFIG_CORENET_GENERIC=y
 # CONFIG_CORESIGHT is not set
 CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
 CONFIG_COSA=m
+CONFIG_CP15_BARRIER_EMULATION=y
 # CONFIG_CPA_DEBUG is not set
 CONFIG_CPM=y
 CONFIG_CPM2=y
@@ -6874,6 +6875,7 @@  CONFIG_SERIO_PS2MULT=m
 CONFIG_SERIO_RAW=m
 CONFIG_SERIO_SERPORT=m
 CONFIG_SERIO_XILINX_XPS_PS2=m
+CONFIG_SETEND_EMULATION=y
 CONFIG_SFC=m
 CONFIG_SFC_MCDI_LOGGING=y
 CONFIG_SFC_MCDI_MON=y
@@ -7557,6 +7559,7 @@  CONFIG_SWAP=y
 CONFIG_SWIOTLB=y
 CONFIG_SWIOTLB_XEN=y
 CONFIG_SWP_EMULATE=y
+CONFIG_SWP_EMULATION=y
 CONFIG_SX9500=m
 CONFIG_SXGBE_ETH=m
 CONFIG_SYNCLINK=m