lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[ARM] 4111/1: Allow VFP to work with thread migration on SMP

Browse Source 
The current lazy saving of the VFP registers is no longer possible
with thread migration on SMP. This patch implements a per-CPU
vfp-state pointer and the saving of the VFP registers at every context
switch. The registers restoring is still performed in a lazy way.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Catalin Marinas
2007-01-24 18:47:08 +01:00
committed by Russell King
parent 412489af76
commit c642846489
5 changed files with 58 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
arch/arm/vfp/vfp.h
View File

@ -370,3 +370,7 @@ struct op {
u32 (* const fn)(int dd, int dn, int dm, u32 fpscr);
u32 flags;
};
#ifdef CONFIG_SMP
extern void vfp_save_state(void *location, u32 fpexc);
#endif