Re: [PATCH v3 2/5] arm64: vdso32: Detect binutils support for dmb ishld

2019-10-01 Thread Vincenzo Frascino
On 10/1/19 2:26 PM, Will Deacon wrote: > On Thu, Sep 26, 2019 at 10:43:39PM +0100, Vincenzo Frascino wrote: >> As reported by Will Deacon, older versions of binutils that do not >> support certain types of memory barriers can cause build failure of the >> vdso32 library. >> >> Add a compilation

Re: [PATCH v3 2/5] arm64: vdso32: Detect binutils support for dmb ishld

2019-10-01 Thread Will Deacon
On Thu, Sep 26, 2019 at 10:43:39PM +0100, Vincenzo Frascino wrote: > As reported by Will Deacon, older versions of binutils that do not > support certain types of memory barriers can cause build failure of the > vdso32 library. > > Add a compilation time mechanism that detects if binutils

Re: [PATCH v3 2/5] arm64: vdso32: Detect binutils support for dmb ishld

2019-09-27 Thread Catalin Marinas
On Thu, Sep 26, 2019 at 10:43:39PM +0100, Vincenzo Frascino wrote: > As reported by Will Deacon, older versions of binutils that do not > support certain types of memory barriers can cause build failure of the > vdso32 library. > > Add a compilation time mechanism that detects if binutils

[PATCH v3 2/5] arm64: vdso32: Detect binutils support for dmb ishld

2019-09-26 Thread Vincenzo Frascino
As reported by Will Deacon, older versions of binutils that do not support certain types of memory barriers can cause build failure of the vdso32 library. Add a compilation time mechanism that detects if binutils supports those instructions and configure the kernel accordingly. Cc: Will Deacon