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@xxxxxxxxx> --- arch/powerpc/include/asm/reg.h | 4 ++++ arch/powerpc/kernel/cpu_setup_power7.S | 18 +++++++++++------- 2 files changed, 15 insertions(+), 7 deletions(-) diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h index c5cae0d..d879a6b 100644 --- a/arch/powerpc/include/asm/reg.h +++ b/arch/powerpc/include/asm/reg.h @@ -232,10 +232,12 @@ #define LPCR_VPM0 (1ul << (63-0)) #define LPCR_VPM1 (1ul << (63-1)) #define LPCR_ISL (1ul << (63-2)) +#define LPCR_VC_SH (63-2) #define LPCR_DPFD_SH (63-11) #define LPCR_VRMA_L (1ul << (63-12)) #define LPCR_VRMA_LP0 (1ul << (63-15)) #define LPCR_VRMA_LP1 (1ul << (63-16)) +#define LPCR_VRMASD_SH (63-16) #define LPCR_RMLS 0x1C000000 /* impl dependent rmo limit sel */ #define LPCR_ILE 0x02000000 /* !HV irqs set MSR:LE */ #define LPCR_PECE 0x00007000 /* powersave exit cause enable */ @@ -243,8 +245,10 @@ #define LPCR_PECE1 0x00002000 /* decrementer can cause exit */ #define LPCR_PECE2 0x00001000 /* machine check etc can cause exit */ #define LPCR_MER 0x00000800 /* Mediated External Exception */ +#define LPCR_LPES 0x0000000c #define LPCR_LPES0 0x00000008 /* LPAR Env selector 0 */ #define LPCR_LPES1 0x00000004 /* LPAR Env selector 1 */ +#define LPCR_LPES_SH 2 #define LPCR_RMI 0x00000002 /* real mode is cache inhibit */ #define LPCR_HDICE 0x00000001 /* Hyp Decr enable (HV,PR,EE) */ #define SPRN_LPID 0x13F /* Logical Partition Identifier */ diff --git a/arch/powerpc/kernel/cpu_setup_power7.S b/arch/powerpc/kernel/cpu_setup_power7.S index 4f9a93f..2ef6749 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 -- 1.7.5.3 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
