From 21f3f8db0e61884ca48e9969b0305d54f1efe24b Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= Date: Fri, 8 Sep 2017 16:33:42 +0200 Subject: ppc/xive: fix OV5_XIVE_EXPLOIT bits MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On POWER9, the Client Architecture Support (CAS) negotiation process determines whether the guest operates in XIVE Legacy compatibility or in XIVE exploitation mode. Now that we have initial guest support for the XIVE interrupt controller, let's fix the bits definition which have evolved in the latest specs. The platform advertises the XIVE Exploitation Mode support using the property "ibm,arch-vec-5-platform-support-vec-5", byte 23 bits 0-1 : - 0b00 XIVE legacy mode Only - 0b01 XIVE exploitation mode Only - 0b10 XIVE legacy or exploitation mode The OS asks for XIVE Exploitation Mode support using the property "ibm,architecture-vec-5", byte 23 bits 0-1: - 0b00 XIVE legacy mode Only - 0b01 XIVE exploitation mode Only Signed-off-by: Cédric Le Goater Signed-off-by: David Gibson --- hw/ppc/spapr.c | 2 +- include/hw/ppc/spapr_ovec.h | 3 ++- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index 06a008b..f680f28 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -937,7 +937,7 @@ static void spapr_dt_ov5_platform_support(void *fdt, int chosen) PowerPCCPU *first_ppc_cpu = POWERPC_CPU(first_cpu); char val[2 * 4] = { - 23, 0x00, /* Xive mode: 0 = legacy (as in ISA 2.7), 1 = Exploitation */ + 23, 0x00, /* Xive mode, filled in below. */ 24, 0x00, /* Hash/Radix, filled in below. */ 25, 0x00, /* Hash options: Segment Tables == no, GTSE == no. */ 26, 0x40, /* Radix options: GTSE == yes. */ diff --git a/include/hw/ppc/spapr_ovec.h b/include/hw/ppc/spapr_ovec.h index 9edfa5f..bf25e5d 100644 --- a/include/hw/ppc/spapr_ovec.h +++ b/include/hw/ppc/spapr_ovec.h @@ -51,7 +51,8 @@ typedef struct sPAPROptionVector sPAPROptionVector; #define OV5_FORM1_AFFINITY OV_BIT(5, 0) #define OV5_HP_EVT OV_BIT(6, 5) #define OV5_HPT_RESIZE OV_BIT(6, 7) -#define OV5_XIVE_EXPLOIT OV_BIT(23, 7) +#define OV5_XIVE_BOTH OV_BIT(23, 0) +#define OV5_XIVE_EXPLOIT OV_BIT(23, 1) /* 1=exploitation 0=legacy */ /* ISA 3.00 MMU features: */ #define OV5_MMU_BOTH OV_BIT(24, 0) /* Radix and hash */ -- cgit v1.1