On Fri, Jan 29, 2021 at 07:27:57PM -1000, Richard Henderson wrote:
> On 1/29/21 10:50 AM, Roman Bolshakov wrote:
> >
> > I thought you already added MAP_JIT in 6f70ddee19e. It's getting enabled
> > on my M1 laptop. Was it intended or not?
> >
> > /* Applicable to both iOS and macOS (Apple Sil
On 1/29/21 10:50 AM, Roman Bolshakov wrote:
> On Fri, Jan 29, 2021 at 10:18:58AM -1000, Richard Henderson wrote:
>> On 1/21/21 8:34 AM, Richard Henderson wrote:
>>> On 1/12/21 5:28 PM, Roman Bolshakov wrote:
@@ -1083,6 +1083,12 @@ static bool alloc_code_gen_buffer_anon(size_t size,
int p
On Fri, Jan 29, 2021 at 10:18:58AM -1000, Richard Henderson wrote:
> On 1/21/21 8:34 AM, Richard Henderson wrote:
> > On 1/12/21 5:28 PM, Roman Bolshakov wrote:
> >> @@ -1083,6 +1083,12 @@ static bool alloc_code_gen_buffer_anon(size_t size,
> >> int prot,
> >> {
> >> void *buf;
> >>
> >> +
On 1/21/21 8:34 AM, Richard Henderson wrote:
> On 1/12/21 5:28 PM, Roman Bolshakov wrote:
>> @@ -1083,6 +1083,12 @@ static bool alloc_code_gen_buffer_anon(size_t size,
>> int prot,
>> {
>> void *buf;
>>
>> +#if defined(MAC_OS_VERSION_11_0) && \
>> +MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_O
On 1/12/21 5:28 PM, Roman Bolshakov wrote:
> @@ -1083,6 +1083,12 @@ static bool alloc_code_gen_buffer_anon(size_t size,
> int prot,
> {
> void *buf;
>
> +#if defined(MAC_OS_VERSION_11_0) && \
> +MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_VERSION_11_0
> +if (__builtin_available(macOS 11
No because of macOS weirdness you still have to map with RWX and MAP_JIT
before you can use this. Split w^x is only useful in iOS where they don’t
provide this functionality.
-j
On Wednesday, January 13, 2021, Richard Henderson <
richard.hender...@linaro.org> wrote:
> On 1/12/21 5:28 PM, Roman B
On 1/12/21 5:28 PM, Roman Bolshakov wrote:
> Pages can't be both write and executable at the same time on Apple
> Silicon. macOS provides public API to switch write protection [1] for
> JIT applications, like TCG.
So... considering that split w^x is now upstream, can we just call this once
per thr
Pages can't be both write and executable at the same time on Apple
Silicon. macOS provides public API to switch write protection [1] for
JIT applications, like TCG.
1.
https://developer.apple.com/documentation/apple_silicon/porting_just-in-time_compilers_to_apple_silicon
Signed-off-by: Roman Bol
