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authorSuresh Siddha <suresh.b.siddha@intel.com>2008-07-29 10:29:21 -0700
committerIngo Molnar <mingo@elte.hu>2008-07-30 19:49:25 +0200
commit3c1c7f101426cb2ecc79d817a8a65928965fc860 (patch)
tree55a2b7c5ccb28ea38bf82f7d799447980e2126c7 /lib/idr.c
parentb359e8a434cc3d09847010fc4aeccf48d69740e4 (diff)
x86, xsave: dynamically allocate sigframes fpstate instead of static allocation
dynamically allocate fpstate on the stack, instead of static allocation in the current sigframe layout on the user stack. This will allow the fpstate structure to grow in the future, which includes extended state information supporting xsave/xrstor. signal handlers will be able to access the fpstate pointer from the sigcontext structure asusual, with no change. For the non RT sigframe's (which are supported only for 32bit apps), current static fpstate layout in the sigframe will be unused(so that we don't change the extramask[] offset in the sigframe and thus prevent breaking app's which modify extramask[]). Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'lib/idr.c')
0 files changed, 0 insertions, 0 deletions