Displaying 4 results from an estimated 4 matches for "66f793099a63".
2018 Feb 07
0
retpoline mitigation and 6.0
On Wed, 2018-02-07 at 10:11 -0800, Guenter Roeck wrote:
> On Wed, Feb 07, 2018 at 10:49:25AM +0000, David Woodhouse wrote:
> > Hm, please could we also have the %V asm constraint modifier? That
> > allows us to emit calls to the thunks from inline asm using the
> > register that the compiler chose for us:
> >
> > asm volatile ("call
2018 Feb 07
3
retpoline mitigation and 6.0
...g commands:
mkdir build
cd build
../cmake-3.10.2/bin/cmake -DCMAKE_BUILD_TYPE=Release -G "Unix Makefiles" ../llvm
make -j80
To build the kernel:
PATH=${HOME}/src/clang/build/bin:${PATH}
make CC=clang defconfig
make CC=clang -j80
The build is a bit noisy right now due to 66f793099a63 ("x86/retpoline: Avoid
retpolines for built-in __init functions"), since clang doesn't understand
"__attribute__((indirect_branch("keep")))".
>
> > I can disable the i915 driver, but the "invalid output size for
> > constraint '=q'&quo...
2018 Feb 07
0
retpoline mitigation and 6.0
...I now get a working 64-
bit defconfig build. It'll still break with any PV guest support
enabled because we need %V asm constraint modifiers.
> PATH=${HOME}/src/clang/build/bin:${PATH}
> make CC=clang defconfig
> make CC=clang -j80
>
> The build is a bit noisy right now due to 66f793099a63 ("x86/retpoline: Avoid
> retpolines for built-in __init functions"), since clang doesn't understand
> "__attribute__((indirect_branch("keep")))".
I fixed that (well, worked around it) in my tree.
> > > I can disable the i915 driver, but the "i...
2018 Feb 07
2
retpoline mitigation and 6.0
On Wed, Feb 07, 2018 at 10:49:25AM +0000, David Woodhouse wrote:
> On Wed, 2018-02-07 at 06:20 +0000, Chandler Carruth wrote:
> > I've landed the patch in r324449.
> >
> > Before we merge this into two different Clang release branches and
> > almost immediately release one of them, I would really like someone
> > to confirm that this patch works well with the