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-rw-r--r--arch/s390/include/asm/kvm_host.h5
-rw-r--r--arch/s390/kvm/kvm-s390.c7
-rw-r--r--arch/s390/kvm/kvm-s390.h6
-rw-r--r--arch/s390/kvm/priv.c86
4 files changed, 99 insertions, 5 deletions
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h
index 9a809f935580..43207dd45fab 100644
--- a/arch/s390/include/asm/kvm_host.h
+++ b/arch/s390/include/asm/kvm_host.h
@@ -62,6 +62,7 @@ struct sca_block {
#define CPUSTAT_MCDS 0x00000100
#define CPUSTAT_SM 0x00000080
#define CPUSTAT_G 0x00000008
+#define CPUSTAT_GED 0x00000004
#define CPUSTAT_J 0x00000002
#define CPUSTAT_P 0x00000001
@@ -96,7 +97,8 @@ struct kvm_s390_sie_block {
__u32 scaoh; /* 0x005c */
__u8 reserved60; /* 0x0060 */
__u8 ecb; /* 0x0061 */
- __u8 reserved62[2]; /* 0x0062 */
+ __u8 ecb2; /* 0x0062 */
+ __u8 reserved63[1]; /* 0x0063 */
__u32 scaol; /* 0x0064 */
__u8 reserved68[4]; /* 0x0068 */
__u32 todpr; /* 0x006c */
@@ -136,6 +138,7 @@ struct kvm_vcpu_stat {
u32 deliver_program_int;
u32 deliver_io_int;
u32 exit_wait_state;
+ u32 instruction_pfmf;
u32 instruction_stidp;
u32 instruction_spx;
u32 instruction_stpx;
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 3b597e590a75..426e259b6a69 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -59,6 +59,7 @@ struct kvm_stats_debugfs_item debugfs_entries[] = {
{ "deliver_restart_signal", VCPU_STAT(deliver_restart_signal) },
{ "deliver_program_interruption", VCPU_STAT(deliver_program_int) },
{ "exit_wait_state", VCPU_STAT(exit_wait_state) },
+ { "instruction_pfmf", VCPU_STAT(instruction_pfmf) },
{ "instruction_stidp", VCPU_STAT(instruction_stidp) },
{ "instruction_spx", VCPU_STAT(instruction_spx) },
{ "instruction_stpx", VCPU_STAT(instruction_stpx) },
@@ -381,8 +382,10 @@ int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
{
atomic_set(&vcpu->arch.sie_block->cpuflags, CPUSTAT_ZARCH |
CPUSTAT_SM |
- CPUSTAT_STOPPED);
+ CPUSTAT_STOPPED |
+ CPUSTAT_GED);
vcpu->arch.sie_block->ecb = 6;
+ vcpu->arch.sie_block->ecb2 = 8;
vcpu->arch.sie_block->eca = 0xC1002001U;
vcpu->arch.sie_block->fac = (int) (long) facilities;
hrtimer_init(&vcpu->arch.ckc_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS);
@@ -1125,7 +1128,7 @@ static int __init kvm_s390_init(void)
return -ENOMEM;
}
memcpy(facilities, S390_lowcore.stfle_fac_list, 16);
- facilities[0] &= 0xff00fff3f47c0000ULL;
+ facilities[0] &= 0xff82fff3f47c0000ULL;
facilities[1] &= 0x001c000000000000ULL;
return 0;
}
diff --git a/arch/s390/kvm/kvm-s390.h b/arch/s390/kvm/kvm-s390.h
index 269b523d0f6e..15795b8f8ff5 100644
--- a/arch/s390/kvm/kvm-s390.h
+++ b/arch/s390/kvm/kvm-s390.h
@@ -86,6 +86,12 @@ static inline void kvm_s390_get_base_disp_sse(struct kvm_vcpu *vcpu,
*address2 = (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
}
+static inline void kvm_s390_get_regs_rre(struct kvm_vcpu *vcpu, int *r1, int *r2)
+{
+ *r1 = (vcpu->arch.sie_block->ipb & 0x00f00000) >> 20;
+ *r2 = (vcpu->arch.sie_block->ipb & 0x000f0000) >> 16;
+}
+
static inline u64 kvm_s390_get_base_disp_rsy(struct kvm_vcpu *vcpu)
{
u32 base2 = vcpu->arch.sie_block->ipb >> 28;
diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c
index ecc58a694df7..bda9c9b494f0 100644
--- a/arch/s390/kvm/priv.c
+++ b/arch/s390/kvm/priv.c
@@ -1,7 +1,7 @@
/*
* handling privileged instructions
*
- * Copyright IBM Corp. 2008
+ * Copyright IBM Corp. 2008, 2013
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License (version 2 only)
@@ -20,6 +20,9 @@
#include <asm/debug.h>
#include <asm/ebcdic.h>
#include <asm/sysinfo.h>
+#include <asm/pgtable.h>
+#include <asm/pgalloc.h>
+#include <asm/io.h>
#include <asm/ptrace.h>
#include <asm/compat.h>
#include "gaccess.h"
@@ -212,7 +215,7 @@ static int handle_stfl(struct kvm_vcpu *vcpu)
vcpu->stat.instruction_stfl++;
/* only pass the facility bits, which we can handle */
- facility_list = S390_lowcore.stfl_fac_list & 0xff00fff3;
+ facility_list = S390_lowcore.stfl_fac_list & 0xff82fff3;
rc = copy_to_guest(vcpu, offsetof(struct _lowcore, stfl_fac_list),
&facility_list, sizeof(facility_list));
@@ -468,9 +471,88 @@ static int handle_epsw(struct kvm_vcpu *vcpu)
return 0;
}
+#define PFMF_RESERVED 0xfffc0101UL
+#define PFMF_SK 0x00020000UL
+#define PFMF_CF 0x00010000UL
+#define PFMF_UI 0x00008000UL
+#define PFMF_FSC 0x00007000UL
+#define PFMF_NQ 0x00000800UL
+#define PFMF_MR 0x00000400UL
+#define PFMF_MC 0x00000200UL
+#define PFMF_KEY 0x000000feUL
+
+static int handle_pfmf(struct kvm_vcpu *vcpu)
+{
+ int reg1, reg2;
+ unsigned long start, end;
+
+ vcpu->stat.instruction_pfmf++;
+
+ kvm_s390_get_regs_rre(vcpu, &reg1, &reg2);
+
+ if (!MACHINE_HAS_PFMF)
+ return kvm_s390_inject_program_int(vcpu, PGM_OPERATION);
+
+ if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
+ return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OPERATION);
+
+ if (vcpu->run->s.regs.gprs[reg1] & PFMF_RESERVED)
+ return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
+
+ /* Only provide non-quiescing support if the host supports it */
+ if (vcpu->run->s.regs.gprs[reg1] & PFMF_NQ &&
+ S390_lowcore.stfl_fac_list & 0x00020000)
+ return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
+
+ /* No support for conditional-SSKE */
+ if (vcpu->run->s.regs.gprs[reg1] & (PFMF_MR | PFMF_MC))
+ return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
+
+ start = vcpu->run->s.regs.gprs[reg2] & PAGE_MASK;
+ switch (vcpu->run->s.regs.gprs[reg1] & PFMF_FSC) {
+ case 0x00000000:
+ end = (start + (1UL << 12)) & ~((1UL << 12) - 1);
+ break;
+ case 0x00001000:
+ end = (start + (1UL << 20)) & ~((1UL << 20) - 1);
+ break;
+ /* We dont support EDAT2
+ case 0x00002000:
+ end = (start + (1UL << 31)) & ~((1UL << 31) - 1);
+ break;*/
+ default:
+ return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
+ }
+ while (start < end) {
+ unsigned long useraddr;
+
+ useraddr = gmap_translate(start, vcpu->arch.gmap);
+ if (IS_ERR((void *)useraddr))
+ return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
+
+ if (vcpu->run->s.regs.gprs[reg1] & PFMF_CF) {
+ if (clear_user((void __user *)useraddr, PAGE_SIZE))
+ return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
+ }
+
+ if (vcpu->run->s.regs.gprs[reg1] & PFMF_SK) {
+ if (set_guest_storage_key(current->mm, useraddr,
+ vcpu->run->s.regs.gprs[reg1] & PFMF_KEY,
+ vcpu->run->s.regs.gprs[reg1] & PFMF_NQ))
+ return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
+ }
+
+ start += PAGE_SIZE;
+ }
+ if (vcpu->run->s.regs.gprs[reg1] & PFMF_FSC)
+ vcpu->run->s.regs.gprs[reg2] = end;
+ return 0;
+}
+
static const intercept_handler_t b9_handlers[256] = {
[0x8d] = handle_epsw,
[0x9c] = handle_io_inst,
+ [0xaf] = handle_pfmf,
};
int kvm_s390_handle_b9(struct kvm_vcpu *vcpu)
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