leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

[SPARC64]: Detect sun4v early in boot process.

Browse Source 
We look for "SUNW,sun4v" in the 'compatible' property
of the root OBP device tree node.

Protect every %ver register access, to make sure it is
not touched on sun4v, as %ver is hyperprivileged there.

Lock kernel TLB entries using hypervisor calls instead of
calls into OBP.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2006-02-09 02:52:44 -08:00
parent 1d2f1f90a1
commit d82ace7dc4
12 changed files with 276 additions and 83 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
arch/sparc64/kernel/setup.c
View File

@@ -504,9 +504,12 @@ static void __init per_cpu_patch(void)
if (tlb_type == spitfire && !this_is_starfire)
return;
__asm__ ("rdpr %%ver, %0" : "=r" (ver));
is_jbus = ((ver >> 32) == __JALAPENO_ID ||
(ver >> 32) == __SERRANO_ID);
is_jbus = 0;
if (tlb_type != hypervisor) {
__asm__ ("rdpr %%ver, %0" : "=r" (ver));
is_jbus = ((ver >> 32) == __JALAPENO_ID ||
(ver >> 32) == __SERRANO_ID);
}
p = &__cpuid_patch;
while (p < &__cpuid_patch_end) {