diff options
| author | Paul Mackerras <paulus@samba.org> | 2011-06-29 00:20:24 +0000 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2011-07-12 13:16:52 +0300 |
| commit | 923c53caea446d246949c94703be83e68f251af7 (patch) | |
| tree | ab9c8b76e630cb94a41951369e6ffc354d0b91c3 /arch/powerpc/kernel | |
| parent | df6909e5d52f67be01862c5cb453e509aee661f1 (diff) | |
powerpc: Set up LPCR for running guest partitions
In hypervisor mode, the LPCR controls several aspects of guest
partitions, including virtual partition memory mode, and also controls
whether the hypervisor decrementer interrupts are enabled. This sets
up LPCR at boot time so that guest partitions will use a virtual real
memory area (VRMA) composed of 16MB large pages, and hypervisor
decrementer interrupts are disabled.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/cpu_setup_power7.S | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/arch/powerpc/kernel/cpu_setup_power7.S b/arch/powerpc/kernel/cpu_setup_power7.S index 4f9a93fcfe0..2ef6749688e 100644 --- a/arch/powerpc/kernel/cpu_setup_power7.S +++ b/arch/powerpc/kernel/cpu_setup_power7.S @@ -61,19 +61,23 @@ __init_LPCR: * LPES = 0b01 (HSRR0/1 used for 0x500) * PECE = 0b111 * DPFD = 4 + * HDICE = 0 + * VC = 0b100 (VPM0=1, VPM1=0, ISL=0) + * VRMASD = 0b10000 (L=1, LP=00) * * Other bits untouched for now */ mfspr r3,SPRN_LPCR - ori r3,r3,(LPCR_LPES0|LPCR_LPES1) - xori r3,r3, LPCR_LPES0 + li r5,1 + rldimi r3,r5, LPCR_LPES_SH, 64-LPCR_LPES_SH-2 ori r3,r3,(LPCR_PECE0|LPCR_PECE1|LPCR_PECE2) - li r5,7 - sldi r5,r5,LPCR_DPFD_SH - andc r3,r3,r5 li r5,4 - sldi r5,r5,LPCR_DPFD_SH - or r3,r3,r5 + rldimi r3,r5, LPCR_DPFD_SH, 64-LPCR_DPFD_SH-3 + clrrdi r3,r3,1 /* clear HDICE */ + li r5,4 + rldimi r3,r5, LPCR_VC_SH, 0 + li r5,0x10 + rldimi r3,r5, LPCR_VRMASD_SH, 64-LPCR_VRMASD_SH-5 mtspr SPRN_LPCR,r3 isync blr |