On 04/07/2016 14:31, Peter Lieven wrote: > I decided to split this from the rest of the Qemu RSS usage series as > it contains the more or less non contentious patches. > > I omitted the MAP_GROWSDOWN flag in mmap as we are not 100% sure which > side effects it has. > > I kept the guard page which is now nicely makes the stacks visible in > smaps. The old version of the relevent patch lacked the MAP_FIXED flag > in the second call to mmap. > > The last patch which reduces the stack size of coroutines to 64kB > may be omitted if its found to risky. > > v1->v2: > - Patch 1: added an architecture dependend guard page [Richard] > - Patch 1: avoid stacks smaller than _SC_THREAD_STACK_MIN [Richard] > - Patch 1: use mmap+mprotect instead of mmap+mmap [Richard] > - Patch 5: u_int32_t -> uint32_t [Richard] > - Patch 5: only available if stack grows down > > Peter Lieven (6): > oslib-posix: add helpers for stack alloc and free > coroutine: add a macro for the coroutine stack size > coroutine-ucontext: use helper for allocating stack memory > coroutine-sigaltstack: use helper for allocating stack memory > oslib-posix: add a configure switch to debug stack usage > coroutine: reduce stack size to 64kB > > configure | 19 +++++++++++ > include/qemu/coroutine_int.h | 2 ++ > include/sysemu/os-posix.h | 23 ++++++++++++++ > util/coroutine-sigaltstack.c | 7 ++-- > util/coroutine-ucontext.c | 9 +++--- > util/coroutine-win32.c | 2 +- > util/oslib-posix.c | 76 > ++++++++++++++++++++++++++++++++++++++++++++ > 7 files changed, 128 insertions(+), 10 deletions(-) >
Reviewed-by: Paolo Bonzini <pbonz...@redhat.com>
