| Message ID | 1539231895-4118-8-git-send-email-firoz.khan@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | ia64: system call table generation support | expand |
On Thu, Oct 11, 2018 at 6:26 AM Firoz Khan <firoz.khan@linaro.org> wrote: > > wire up perf_event_open, seccomp, pkey_mprotect, pkey_alloc, > pkey_free, statx, io_pgetevents and rseq system calls > > This require an architecture specific implementation as it not > present now. > > Signed-off-by: Firoz Khan <firoz.khan@linaro.org> > --- > arch/ia64/kernel/syscalls/syscall.tbl | 16 ++++++++++++++++ > 1 file changed, 16 insertions(+) > > diff --git a/arch/ia64/kernel/syscalls/syscall.tbl b/arch/ia64/kernel/syscalls/syscall.tbl > index 6b64f60..1f42b60 100644 > --- a/arch/ia64/kernel/syscalls/syscall.tbl > +++ b/arch/ia64/kernel/syscalls/syscall.tbl > @@ -335,3 +335,19 @@ > 323 common copy_file_range sys_copy_file_range > 324 common preadv2 sys_preadv2 > 325 common pwritev2 sys_pwritev2 > +# perf_event_open requires an architecture specific implementation > +326 common perf_event_open sys_perf_event_open > +# seccomp requires an architecture specific implementation > +327 common seccomp sys_seccomp I don't think that's correct for these two. perf_event_open() of course requires 'perf' support that ia64 does not have, but at least seccomp should just work. > +# pkey_mprotect requires an architecture specific implementation > +328 common pkey_mprotect sys_pkey_mprotect > +# pkey_alloc requires an architecture specific implementation > +329 common pkey_alloc sys_pkey_alloc > +# pkey_free requires an architecture specific implementation > +330 common pkey_free sys_pkey_free One comment for all pkey calls would be sufficient. More importantly it requires hardware support that ia64 does not have AFAICT. > +# statx requires an architecture specific implementation > +331 common statx sys_statx > +# io_pgetevents requires an architecture specific implementation > +332 common io_pgetevents sys_io_pgetevents It certainly does not require any support from the architecture for these. > +# rseq requires an architecture specific implementation > +333 common rseq sys_rseq Maybe leave rseq and pkey_* commented out so we reserve the number but don't add it for real? Maybe the ia64 maintainers have a preference. As asm-generic maintainer, I'd like to have the various asm/unistd.h headers be as similar as possible and at least reserve all the numbers even if we don't need the calls on a given architecture. Arnd
Hi Arnd, On Thu, 11 Oct 2018 at 12:55, Arnd Bergmann <arnd@arndb.de> wrote: > > On Thu, Oct 11, 2018 at 6:26 AM Firoz Khan <firoz.khan@linaro.org> wrote: > > > > wire up perf_event_open, seccomp, pkey_mprotect, pkey_alloc, > > pkey_free, statx, io_pgetevents and rseq system calls > > > > This require an architecture specific implementation as it not > > present now. > > > > Signed-off-by: Firoz Khan <firoz.khan@linaro.org> > > --- > > arch/ia64/kernel/syscalls/syscall.tbl | 16 ++++++++++++++++ > > 1 file changed, 16 insertions(+) > > > > diff --git a/arch/ia64/kernel/syscalls/syscall.tbl b/arch/ia64/kernel/syscalls/syscall.tbl > > index 6b64f60..1f42b60 100644 > > --- a/arch/ia64/kernel/syscalls/syscall.tbl > > +++ b/arch/ia64/kernel/syscalls/syscall.tbl > > @@ -335,3 +335,19 @@ > > 323 common copy_file_range sys_copy_file_range > > 324 common preadv2 sys_preadv2 > > 325 common pwritev2 sys_pwritev2 > > +# perf_event_open requires an architecture specific implementation > > +326 common perf_event_open sys_perf_event_open > > +# seccomp requires an architecture specific implementation > > +327 common seccomp sys_seccomp > > I don't think that's correct for these two. perf_event_open() of > course requires 'perf' support that ia64 does not have, but > at least seccomp should just work. > > > +# pkey_mprotect requires an architecture specific implementation > > +328 common pkey_mprotect sys_pkey_mprotect > > +# pkey_alloc requires an architecture specific implementation > > +329 common pkey_alloc sys_pkey_alloc > > +# pkey_free requires an architecture specific implementation > > +330 common pkey_free sys_pkey_free > > One comment for all pkey calls would be sufficient. More importantly > it requires hardware support that ia64 does not have AFAICT. > > > +# statx requires an architecture specific implementation > > +331 common statx sys_statx > > +# io_pgetevents requires an architecture specific implementation > > +332 common io_pgetevents sys_io_pgetevents > > It certainly does not require any support from the architecture for these. > > > +# rseq requires an architecture specific implementation > > +333 common rseq sys_rseq > > Maybe leave rseq and pkey_* commented out so we reserve > the number but don't add it for real? Maybe the ia64 maintainers > have a preference. > > As asm-generic maintainer, I'd like to have the various asm/unistd.h > headers be as similar as possible and at least reserve all the > numbers even if we don't need the calls on a given architecture. > Thanks for your review. Firoz > Arnd
On Thu, Oct 11, 2018 at 09:24:43AM +0200, Arnd Bergmann wrote: > On Thu, Oct 11, 2018 at 6:26 AM Firoz Khan <firoz.khan@linaro.org> wrote: > > +# perf_event_open requires an architecture specific implementation > > +326 common perf_event_open sys_perf_event_open [...] > > I don't think that's correct for these two. perf_event_open() of > course requires 'perf' support that ia64 does not have That's actuallt quite funny, given the fact that IA-64 has perfmonctl() which likely was the precursor of current perf infractructure. > > +# pkey_mprotect requires an architecture specific implementation > > +328 common pkey_mprotect sys_pkey_mprotect > > +# pkey_alloc requires an architecture specific implementation > > +329 common pkey_alloc sys_pkey_alloc > > +# pkey_free requires an architecture specific implementation > > +330 common pkey_free sys_pkey_free > > One comment for all pkey calls would be sufficient. More importantly > it requires hardware support that ia64 does not have AFAICT. Except it has[1]. [1] https://www.thailand.intel.com/content/dam/www/public/us/en/documents/manuals/itanium-architecture-software-developer-rev-2-3-vol-2-manual.pdf#page=78
On 10/11/18, Eugene Syromiatnikov <esyr@redhat.com> wrote: > On Thu, Oct 11, 2018 at 09:24:43AM +0200, Arnd Bergmann wrote: >> On Thu, Oct 11, 2018 at 6:26 AM Firoz Khan <firoz.khan@linaro.org> wrote: > >> > +# pkey_mprotect requires an architecture specific implementation >> > +328 common pkey_mprotect sys_pkey_mprotect >> > +# pkey_alloc requires an architecture specific implementation >> > +329 common pkey_alloc sys_pkey_alloc >> > +# pkey_free requires an architecture specific implementation >> > +330 common pkey_free sys_pkey_free >> >> One comment for all pkey calls would be sufficient. More importantly >> it requires hardware support that ia64 does not have AFAICT. > > Except it has[1]. > Ok, then we should definitely assign the system call numbers. Arnd
diff --git a/arch/ia64/kernel/syscalls/syscall.tbl b/arch/ia64/kernel/syscalls/syscall.tbl index 6b64f60..1f42b60 100644 --- a/arch/ia64/kernel/syscalls/syscall.tbl +++ b/arch/ia64/kernel/syscalls/syscall.tbl @@ -335,3 +335,19 @@ 323 common copy_file_range sys_copy_file_range 324 common preadv2 sys_preadv2 325 common pwritev2 sys_pwritev2 +# perf_event_open requires an architecture specific implementation +326 common perf_event_open sys_perf_event_open +# seccomp requires an architecture specific implementation +327 common seccomp sys_seccomp +# pkey_mprotect requires an architecture specific implementation +328 common pkey_mprotect sys_pkey_mprotect +# pkey_alloc requires an architecture specific implementation +329 common pkey_alloc sys_pkey_alloc +# pkey_free requires an architecture specific implementation +330 common pkey_free sys_pkey_free +# statx requires an architecture specific implementation +331 common statx sys_statx +# io_pgetevents requires an architecture specific implementation +332 common io_pgetevents sys_io_pgetevents +# rseq requires an architecture specific implementation +333 common rseq sys_rseq
wire up perf_event_open, seccomp, pkey_mprotect, pkey_alloc, pkey_free, statx, io_pgetevents and rseq system calls This require an architecture specific implementation as it not present now. Signed-off-by: Firoz Khan <firoz.khan@linaro.org> --- arch/ia64/kernel/syscalls/syscall.tbl | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) -- 1.9.1