search for: arch_has_nocache_uaccess

Displaying 5 results from an estimated 5 matches for "arch_has_nocache_uaccess".

[RFC PATCH] vhost, mm: make sure that oom_reaper doesn't reap memory read by vhost
2016 Jun 19
2
[RFC PATCH] vhost, mm: make sure that oom_reaper doesn't reap memory read by vhost
...git a/include/linux/uaccess.h b/include/linux/uaccess.h > > index 349557825428..b1f314fca3c8 100644 > > --- a/include/linux/uaccess.h > > +++ b/include/linux/uaccess.h > > @@ -76,6 +76,28 @@ static inline unsigned long __copy_from_user_nocache(void *to, > > #endif /* ARCH_HAS_NOCACHE_UACCESS */ > > > > /* > > + * A safe variant of __get_user for for use_mm() users to have a > > + * gurantee that the address space wasn't reaped in the background > > + */ > > +#define __get_user_mm(mm, x, ptr) \ > > +({ \ > > + int ___gu_er...
[RFC PATCH] vhost, mm: make sure that oom_reaper doesn't reap memory read by vhost
2016 Jun 19
2
[RFC PATCH] vhost, mm: make sure that oom_reaper doesn't reap memory read by vhost
...git a/include/linux/uaccess.h b/include/linux/uaccess.h > > index 349557825428..b1f314fca3c8 100644 > > --- a/include/linux/uaccess.h > > +++ b/include/linux/uaccess.h > > @@ -76,6 +76,28 @@ static inline unsigned long __copy_from_user_nocache(void *to, > > #endif /* ARCH_HAS_NOCACHE_UACCESS */ > > > > /* > > + * A safe variant of __get_user for for use_mm() users to have a > > + * gurantee that the address space wasn't reaped in the background > > + */ > > +#define __get_user_mm(mm, x, ptr) \ > > +({ \ > > + int ___gu_er...
[RFC PATCH] vhost, mm: make sure that oom_reaper doesn't reap memory read by vhost
2016 Jun 17
2
[RFC PATCH] vhost, mm: make sure that oom_reaper doesn't reap memory read by vhost
...MF_DUMPABLE_MASK | MMF_DUMP_FILTER_MASK) diff --git a/include/linux/uaccess.h b/include/linux/uaccess.h index 349557825428..b1f314fca3c8 100644 --- a/include/linux/uaccess.h +++ b/include/linux/uaccess.h @@ -76,6 +76,28 @@ static inline unsigned long __copy_from_user_nocache(void *to, #endif /* ARCH_HAS_NOCACHE_UACCESS */ /* + * A safe variant of __get_user for for use_mm() users to have a + * gurantee that the address space wasn't reaped in the background + */ +#define __get_user_mm(mm, x, ptr) \ +({ \ + int ___gu_err = __get_user(x, ptr); \ + if (!___gu_err && test_bit(MMF_UNSTABLE, &...
[RFC PATCH] vhost, mm: make sure that oom_reaper doesn't reap memory read by vhost
2016 Jun 17
2
[RFC PATCH] vhost, mm: make sure that oom_reaper doesn't reap memory read by vhost
...MF_DUMPABLE_MASK | MMF_DUMP_FILTER_MASK) diff --git a/include/linux/uaccess.h b/include/linux/uaccess.h index 349557825428..b1f314fca3c8 100644 --- a/include/linux/uaccess.h +++ b/include/linux/uaccess.h @@ -76,6 +76,28 @@ static inline unsigned long __copy_from_user_nocache(void *to, #endif /* ARCH_HAS_NOCACHE_UACCESS */ /* + * A safe variant of __get_user for for use_mm() users to have a + * gurantee that the address space wasn't reaped in the background + */ +#define __get_user_mm(mm, x, ptr) \ +({ \ + int ___gu_err = __get_user(x, ptr); \ + if (!___gu_err && test_bit(MMF_UNSTABLE, &...
[RFC PATCH] vhost, mm: make sure that oom_reaper doesn't reap memory read by vhost
2016 Jun 18
0
[RFC PATCH] vhost, mm: make sure that oom_reaper doesn't reap memory read by vhost
...MASK) > > diff --git a/include/linux/uaccess.h b/include/linux/uaccess.h > index 349557825428..b1f314fca3c8 100644 > --- a/include/linux/uaccess.h > +++ b/include/linux/uaccess.h > @@ -76,6 +76,28 @@ static inline unsigned long __copy_from_user_nocache(void *to, > #endif /* ARCH_HAS_NOCACHE_UACCESS */ > > /* > + * A safe variant of __get_user for for use_mm() users to have a > + * gurantee that the address space wasn't reaped in the background > + */ > +#define __get_user_mm(mm, x, ptr) \ > +({ \ > + int ___gu_err = __get_user(x, ptr); \ > + if (!...