xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[PATCH] i386: move SIMD initialization

Browse Source 
Move some code unrelated to any dealing with hardware bugs from i386's
bugs.h to a more logical place.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jan Beulich
2006-01-06 00:11:49 -08:00
committed by Linus Torvalds
parent e43d674f44
commit d43c6e8083
2 changed files with 23 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
arch/i386/kernel/traps.c
View File

@@ -1098,6 +1098,28 @@ void __init trap_init(void)
#endif
set_trap_gate(19,&simd_coprocessor_error);
if (cpu_has_fxsr) {
/*
* Verify that the FXSAVE/FXRSTOR data will be 16-byte aligned.
* Generates a compile-time "error: zero width for bit-field" if
* the alignment is wrong.
*/
struct fxsrAlignAssert {
int _:!(offsetof(struct task_struct,
thread.i387.fxsave) & 15);
};
printk(KERN_INFO "Enabling fast FPU save and restore... ");
set_in_cr4(X86_CR4_OSFXSR);
printk("done.\n");
}
if (cpu_has_xmm) {
printk(KERN_INFO "Enabling unmasked SIMD FPU exception "
"support... ");
set_in_cr4(X86_CR4_OSXMMEXCPT);
printk("done.\n");
}
set_system_gate(SYSCALL_VECTOR,&system_call);
/*