* Laurent Dufour wrote:
> > I argue we should use the right condition to clear vdso_base: if
> > the vDSO gets at least partially unmapped. Otherwise there's
> > little point in the whole patch: either correctly track whether
> > the vDSO is OK, or don't ...
>
> That's a good option, but it
On Wed, 2015-03-25 at 19:33 +0100, Ingo Molnar wrote:
> * Laurent Dufour wrote:
>
> > +static inline void arch_unmap(struct mm_struct *mm,
> > + struct vm_area_struct *vma,
> > + unsigned long start, unsigned long end)
> > +{
> > + if (start <= mm->context.vd
On 26/03/2015 10:48, Ingo Molnar wrote:
>
> * Benjamin Herrenschmidt wrote:
>
+#define __HAVE_ARCH_REMAP
+static inline void arch_remap(struct mm_struct *mm,
+unsigned long old_start, unsigned long old_end,
+unsigned long new_st
* Benjamin Herrenschmidt wrote:
> > > +#define __HAVE_ARCH_REMAP
> > > +static inline void arch_remap(struct mm_struct *mm,
> > > + unsigned long old_start, unsigned long old_end,
> > > + unsigned long new_start, unsigned long new_end)
> > > +{
> > > +
On 26/03/2015 10:43, Ingo Molnar wrote:
>
> * Benjamin Herrenschmidt wrote:
>
>> On Wed, 2015-03-25 at 19:36 +0100, Ingo Molnar wrote:
>>> * Ingo Molnar wrote:
>>>
> +#define __HAVE_ARCH_REMAP
> +static inline void arch_remap(struct mm_struct *mm,
> + unsigned
On Wed, 2015-03-25 at 19:36 +0100, Ingo Molnar wrote:
> * Ingo Molnar wrote:
>
> > > +#define __HAVE_ARCH_REMAP
> > > +static inline void arch_remap(struct mm_struct *mm,
> > > + unsigned long old_start, unsigned long old_end,
> > > + unsigned long new_
* Ingo Molnar wrote:
> > +#define __HAVE_ARCH_REMAP
> > +static inline void arch_remap(struct mm_struct *mm,
> > + unsigned long old_start, unsigned long old_end,
> > + unsigned long new_start, unsigned long new_end)
> > +{
> > + /*
> > +* mr
* Benjamin Herrenschmidt wrote:
> On Wed, 2015-03-25 at 19:36 +0100, Ingo Molnar wrote:
> > * Ingo Molnar wrote:
> >
> > > > +#define __HAVE_ARCH_REMAP
> > > > +static inline void arch_remap(struct mm_struct *mm,
> > > > + unsigned long old_start, unsigned long
> >
* Laurent Dufour wrote:
> +static inline void arch_unmap(struct mm_struct *mm,
> + struct vm_area_struct *vma,
> + unsigned long start, unsigned long end)
> +{
> + if (start <= mm->context.vdso_base && mm->context.vdso_base < end)
> + mm->c
Before we had SKAS0 UML had two modes of operation
TT (tracing thread) and SKAS3/4 (separated kernel address space).
TT was known to be insecure and got removed a long time ago.
SKAS3/4 required a few (3 or 4) patches on the host side which never went
mainline. The last host patch is 10 years old.
That code is a relict from the early days of UML.
ia64 support was never completed nor worked.
Let's rip it out.
Signed-off-by: Richard Weinberger
---
arch/um/Makefile-ia64 | 1 -
arch/um/sys-ia64/Makefile | 11 ---
arch/um/sys-ia64/sysdep/ptrace.h | 16
Remove left over code from commit 970e51feaddb
(um: Add support for CONFIG_STACKTRACE)
Signed-off-by: Richard Weinberger
---
arch/um/kernel/sysrq.c | 6 +-
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/arch/um/kernel/sysrq.c b/arch/um/kernel/sysrq.c
index 894c8d3..aa1b56f 1006
Highmem was always buggy and experimental on UML(i386).
In times where 64 bit computers are default we can
remove that experimental code.
Signed-off-by: Richard Weinberger
---
arch/um/Kconfig.um| 12
arch/um/include/asm/fixmap.h | 4 ---
arch/um/include/asm/pgtable.h | 6
At times where UML used the TT mode to operate it had
kind of SMP support. It never got finished nor was
stable.
Let's rip out that cruft and stop confusing developers
which do tree-wide SMP cleanups.
If someone wants SMP support UML it has do be done from scratch.
Signed-off-by: Richard Weinberg
That code is a relict from the early days of UML.
ppc support was never completed nor worked.
Let's rip it out.
Signed-off-by: Richard Weinberger
---
arch/um/Makefile-ppc| 9 ---
arch/um/sys-ppc/Makefile| 65
arch/um/sys-ppc/asm/arc
Currently hostfs issues every time a seekdir(), in fact
it has to do this only upon the first call.
Also telldir() can be omitted as we can obtain the directory
offset from readdir().
Signed-off-by: Richard Weinberger
---
fs/hostfs/hostfs.h | 3 ++-
fs/hostfs/hostfs_kern.c | 1 +
fs/hostf
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