: Warning: unpredictable: identical transfer and status registers
> --`stxr w4,x5,[x4] using aarch64 poky gcc 8.3
>
> Hi,
>
> On Wed, 13 Feb 2019, Peng Fan wrote:
>
> > So the fix should be the following, right?
>
> Yup.
Thanks for your help.
Thanks,
Peng.
>
>
> Ciao,
> Michael.
Hi,
On Wed, 13 Feb 2019, Peng Fan wrote:
> So the fix should be the following, right?
Yup.
Ciao,
Michael.
: Warning: unpredictable: identical transfer and status registers
> --`stxr w4,x5,[x4] using aarch64 poky gcc 8.3
>
> On Feb 13 2019, Peng Fan wrote:
>
> > static inline int test_and_set_bit(int nr, volatile unsigned long
> > *addr) {
> > u32 ret;
> >
gt; Subject: Re: Warning: unpredictable: identical transfer and status registers
> --`stxr w4,x5,[x4] using aarch64 poky gcc 8.3
>
> Hi,
>
> On Wed, 13 Feb 2019, Peng Fan wrote:
>
> > asm volatile (
> > "ldxr %3,
Hi,
On Wed, 13 Feb 2019, Peng Fan wrote:
> asm volatile (
> "ldxr %3, %2\n\t"
> "ands %1, %3, %4\n\t"
> "b.ne 1f\n\t"
> "orr%3, %3, %4\n\t"
> "1:\n\t"
On Feb 13 2019, Peng Fan wrote:
> static inline int test_and_set_bit(int nr, volatile unsigned long *addr)
> {
> u32 ret;
> u64 test, tmp;
>
> BITOPT_ALIGN(nr, addr);
>
> /* AARCH64_TODO: using Inner Shareable DMB at the moment,
> * revisit when we will
egroups.com; will.dea...@arm.com; Catalin Marinas
>
> Subject: Re: Warning: unpredictable: identical transfer and status registers
> --`stxr w4,x5,[x4] using aarch64 poky gcc 8.3
>
> OneWed, Feb 13, 2019 at 07:13:21AM +, Peng Fan wrote:
> > We met an issue when building a piece ja
OneWed, Feb 13, 2019 at 07:13:21AM +, Peng Fan wrote:
> We met an issue when building a piece jailhouse hypervisor code, "stxr %w0,
> %3, %2\n\t" is
> compiled as "stxr w4,x5,[x4]" which triggers the warning
> "Warning: unpredictable: identical transfer and status registers"
This is not
Hi,
We met an issue when building a piece jailhouse hypervisor code, "stxr %w0,
%3, %2\n\t" is
compiled as "stxr w4,x5,[x4]" which triggers the warning
"Warning: unpredictable: identical transfer and status registers"
After folder the do while into asm code, it is compiled as "stxr w1, x4,
