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-rw-r--r--arch/s390/kvm/gaccess.h62
-rw-r--r--arch/s390/kvm/intercept.c14
-rw-r--r--arch/s390/kvm/interrupt.c21
-rw-r--r--arch/s390/kvm/kvm-s390.c9
-rw-r--r--arch/s390/kvm/sigp.c5
5 files changed, 60 insertions, 51 deletions
diff --git a/arch/s390/kvm/gaccess.h b/arch/s390/kvm/gaccess.h
index 4e0633c413f..ed60f3a74a8 100644
--- a/arch/s390/kvm/gaccess.h
+++ b/arch/s390/kvm/gaccess.h
@@ -18,11 +18,11 @@
#include <asm/uaccess.h>
static inline void __user *__guestaddr_to_user(struct kvm_vcpu *vcpu,
- u64 guestaddr)
+ unsigned long guestaddr)
{
- u64 prefix = vcpu->arch.sie_block->prefix;
- u64 origin = vcpu->kvm->arch.guest_origin;
- u64 memsize = vcpu->kvm->arch.guest_memsize;
+ unsigned long prefix = vcpu->arch.sie_block->prefix;
+ unsigned long origin = vcpu->kvm->arch.guest_origin;
+ unsigned long memsize = vcpu->kvm->arch.guest_memsize;
if (guestaddr < 2 * PAGE_SIZE)
guestaddr += prefix;
@@ -37,7 +37,7 @@ static inline void __user *__guestaddr_to_user(struct kvm_vcpu *vcpu,
return (void __user *) guestaddr;
}
-static inline int get_guest_u64(struct kvm_vcpu *vcpu, u64 guestaddr,
+static inline int get_guest_u64(struct kvm_vcpu *vcpu, unsigned long guestaddr,
u64 *result)
{
void __user *uptr = __guestaddr_to_user(vcpu, guestaddr);
@@ -47,10 +47,10 @@ static inline int get_guest_u64(struct kvm_vcpu *vcpu, u64 guestaddr,
if (IS_ERR((void __force *) uptr))
return PTR_ERR((void __force *) uptr);
- return get_user(*result, (u64 __user *) uptr);
+ return get_user(*result, (unsigned long __user *) uptr);
}
-static inline int get_guest_u32(struct kvm_vcpu *vcpu, u64 guestaddr,
+static inline int get_guest_u32(struct kvm_vcpu *vcpu, unsigned long guestaddr,
u32 *result)
{
void __user *uptr = __guestaddr_to_user(vcpu, guestaddr);
@@ -63,7 +63,7 @@ static inline int get_guest_u32(struct kvm_vcpu *vcpu, u64 guestaddr,
return get_user(*result, (u32 __user *) uptr);
}
-static inline int get_guest_u16(struct kvm_vcpu *vcpu, u64 guestaddr,
+static inline int get_guest_u16(struct kvm_vcpu *vcpu, unsigned long guestaddr,
u16 *result)
{
void __user *uptr = __guestaddr_to_user(vcpu, guestaddr);
@@ -76,7 +76,7 @@ static inline int get_guest_u16(struct kvm_vcpu *vcpu, u64 guestaddr,
return get_user(*result, (u16 __user *) uptr);
}
-static inline int get_guest_u8(struct kvm_vcpu *vcpu, u64 guestaddr,
+static inline int get_guest_u8(struct kvm_vcpu *vcpu, unsigned long guestaddr,
u8 *result)
{
void __user *uptr = __guestaddr_to_user(vcpu, guestaddr);
@@ -87,7 +87,7 @@ static inline int get_guest_u8(struct kvm_vcpu *vcpu, u64 guestaddr,
return get_user(*result, (u8 __user *) uptr);
}
-static inline int put_guest_u64(struct kvm_vcpu *vcpu, u64 guestaddr,
+static inline int put_guest_u64(struct kvm_vcpu *vcpu, unsigned long guestaddr,
u64 value)
{
void __user *uptr = __guestaddr_to_user(vcpu, guestaddr);
@@ -100,7 +100,7 @@ static inline int put_guest_u64(struct kvm_vcpu *vcpu, u64 guestaddr,
return put_user(value, (u64 __user *) uptr);
}
-static inline int put_guest_u32(struct kvm_vcpu *vcpu, u64 guestaddr,
+static inline int put_guest_u32(struct kvm_vcpu *vcpu, unsigned long guestaddr,
u32 value)
{
void __user *uptr = __guestaddr_to_user(vcpu, guestaddr);
@@ -113,7 +113,7 @@ static inline int put_guest_u32(struct kvm_vcpu *vcpu, u64 guestaddr,
return put_user(value, (u32 __user *) uptr);
}
-static inline int put_guest_u16(struct kvm_vcpu *vcpu, u64 guestaddr,
+static inline int put_guest_u16(struct kvm_vcpu *vcpu, unsigned long guestaddr,
u16 value)
{
void __user *uptr = __guestaddr_to_user(vcpu, guestaddr);
@@ -126,7 +126,7 @@ static inline int put_guest_u16(struct kvm_vcpu *vcpu, u64 guestaddr,
return put_user(value, (u16 __user *) uptr);
}
-static inline int put_guest_u8(struct kvm_vcpu *vcpu, u64 guestaddr,
+static inline int put_guest_u8(struct kvm_vcpu *vcpu, unsigned long guestaddr,
u8 value)
{
void __user *uptr = __guestaddr_to_user(vcpu, guestaddr);
@@ -138,7 +138,8 @@ static inline int put_guest_u8(struct kvm_vcpu *vcpu, u64 guestaddr,
}
-static inline int __copy_to_guest_slow(struct kvm_vcpu *vcpu, u64 guestdest,
+static inline int __copy_to_guest_slow(struct kvm_vcpu *vcpu,
+ unsigned long guestdest,
const void *from, unsigned long n)
{
int rc;
@@ -153,12 +154,12 @@ static inline int __copy_to_guest_slow(struct kvm_vcpu *vcpu, u64 guestdest,
return 0;
}
-static inline int copy_to_guest(struct kvm_vcpu *vcpu, u64 guestdest,
+static inline int copy_to_guest(struct kvm_vcpu *vcpu, unsigned long guestdest,
const void *from, unsigned long n)
{
- u64 prefix = vcpu->arch.sie_block->prefix;
- u64 origin = vcpu->kvm->arch.guest_origin;
- u64 memsize = vcpu->kvm->arch.guest_memsize;
+ unsigned long prefix = vcpu->arch.sie_block->prefix;
+ unsigned long origin = vcpu->kvm->arch.guest_origin;
+ unsigned long memsize = vcpu->kvm->arch.guest_memsize;
if ((guestdest < 2 * PAGE_SIZE) && (guestdest + n > 2 * PAGE_SIZE))
goto slowpath;
@@ -189,7 +190,8 @@ slowpath:
}
static inline int __copy_from_guest_slow(struct kvm_vcpu *vcpu, void *to,
- u64 guestsrc, unsigned long n)
+ unsigned long guestsrc,
+ unsigned long n)
{
int rc;
unsigned long i;
@@ -204,11 +206,11 @@ static inline int __copy_from_guest_slow(struct kvm_vcpu *vcpu, void *to,
}
static inline int copy_from_guest(struct kvm_vcpu *vcpu, void *to,
- u64 guestsrc, unsigned long n)
+ unsigned long guestsrc, unsigned long n)
{
- u64 prefix = vcpu->arch.sie_block->prefix;
- u64 origin = vcpu->kvm->arch.guest_origin;
- u64 memsize = vcpu->kvm->arch.guest_memsize;
+ unsigned long prefix = vcpu->arch.sie_block->prefix;
+ unsigned long origin = vcpu->kvm->arch.guest_origin;
+ unsigned long memsize = vcpu->kvm->arch.guest_memsize;
if ((guestsrc < 2 * PAGE_SIZE) && (guestsrc + n > 2 * PAGE_SIZE))
goto slowpath;
@@ -238,11 +240,12 @@ slowpath:
return __copy_from_guest_slow(vcpu, to, guestsrc, n);
}
-static inline int copy_to_guest_absolute(struct kvm_vcpu *vcpu, u64 guestdest,
+static inline int copy_to_guest_absolute(struct kvm_vcpu *vcpu,
+ unsigned long guestdest,
const void *from, unsigned long n)
{
- u64 origin = vcpu->kvm->arch.guest_origin;
- u64 memsize = vcpu->kvm->arch.guest_memsize;
+ unsigned long origin = vcpu->kvm->arch.guest_origin;
+ unsigned long memsize = vcpu->kvm->arch.guest_memsize;
if (guestdest + n > memsize)
return -EFAULT;
@@ -256,10 +259,11 @@ static inline int copy_to_guest_absolute(struct kvm_vcpu *vcpu, u64 guestdest,
}
static inline int copy_from_guest_absolute(struct kvm_vcpu *vcpu, void *to,
- u64 guestsrc, unsigned long n)
+ unsigned long guestsrc,
+ unsigned long n)
{
- u64 origin = vcpu->kvm->arch.guest_origin;
- u64 memsize = vcpu->kvm->arch.guest_memsize;
+ unsigned long origin = vcpu->kvm->arch.guest_origin;
+ unsigned long memsize = vcpu->kvm->arch.guest_memsize;
if (guestsrc + n > memsize)
return -EFAULT;
diff --git a/arch/s390/kvm/intercept.c b/arch/s390/kvm/intercept.c
index 47a0b642174..61236102203 100644
--- a/arch/s390/kvm/intercept.c
+++ b/arch/s390/kvm/intercept.c
@@ -20,7 +20,7 @@
#include "kvm-s390.h"
#include "gaccess.h"
-static int handle_lctg(struct kvm_vcpu *vcpu)
+static int handle_lctlg(struct kvm_vcpu *vcpu)
{
int reg1 = (vcpu->arch.sie_block->ipa & 0x00f0) >> 4;
int reg3 = vcpu->arch.sie_block->ipa & 0x000f;
@@ -30,7 +30,7 @@ static int handle_lctg(struct kvm_vcpu *vcpu)
u64 useraddr;
int reg, rc;
- vcpu->stat.instruction_lctg++;
+ vcpu->stat.instruction_lctlg++;
if ((vcpu->arch.sie_block->ipb & 0xff) != 0x2f)
return -ENOTSUPP;
@@ -38,9 +38,12 @@ static int handle_lctg(struct kvm_vcpu *vcpu)
if (base2)
useraddr += vcpu->arch.guest_gprs[base2];
+ if (useraddr & 7)
+ return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
+
reg = reg1;
- VCPU_EVENT(vcpu, 5, "lctg r1:%x, r3:%x,b2:%x,d2:%x", reg1, reg3, base2,
+ VCPU_EVENT(vcpu, 5, "lctlg r1:%x, r3:%x,b2:%x,d2:%x", reg1, reg3, base2,
disp2);
do {
@@ -74,6 +77,9 @@ static int handle_lctl(struct kvm_vcpu *vcpu)
if (base2)
useraddr += vcpu->arch.guest_gprs[base2];
+ if (useraddr & 3)
+ return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
+
VCPU_EVENT(vcpu, 5, "lctl r1:%x, r3:%x,b2:%x,d2:%x", reg1, reg3, base2,
disp2);
@@ -99,7 +105,7 @@ static intercept_handler_t instruction_handlers[256] = {
[0xae] = kvm_s390_handle_sigp,
[0xb2] = kvm_s390_handle_priv,
[0xb7] = handle_lctl,
- [0xeb] = handle_lctg,
+ [0xeb] = handle_lctlg,
};
static int handle_noop(struct kvm_vcpu *vcpu)
diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index 11230b0db95..2960702b482 100644
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -13,6 +13,7 @@
#include <asm/lowcore.h>
#include <asm/uaccess.h>
#include <linux/kvm_host.h>
+#include <linux/signal.h>
#include "kvm-s390.h"
#include "gaccess.h"
@@ -246,15 +247,10 @@ static void __do_deliver_interrupt(struct kvm_vcpu *vcpu,
default:
BUG();
}
-
if (exception) {
- VCPU_EVENT(vcpu, 1, "%s", "program exception while delivering"
- " interrupt");
- kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
- if (inti->type == KVM_S390_PROGRAM_INT) {
- printk(KERN_WARNING "kvm: recursive program check\n");
- BUG();
- }
+ printk("kvm: The guest lowcore is not mapped during interrupt "
+ "delivery, killing userspace\n");
+ do_exit(SIGKILL);
}
}
@@ -277,14 +273,11 @@ static int __try_deliver_ckc_interrupt(struct kvm_vcpu *vcpu)
__LC_EXT_NEW_PSW, sizeof(psw_t));
if (rc == -EFAULT)
exception = 1;
-
if (exception) {
- VCPU_EVENT(vcpu, 1, "%s", "program exception while delivering" \
- " ckc interrupt");
- kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
- return 0;
+ printk("kvm: The guest lowcore is not mapped during interrupt "
+ "delivery, killing userspace\n");
+ do_exit(SIGKILL);
}
-
return 1;
}
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 1782cbcd282..8b00eb2ddf5 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -39,7 +39,7 @@ struct kvm_stats_debugfs_item debugfs_entries[] = {
{ "exit_instruction", VCPU_STAT(exit_instruction) },
{ "exit_program_interruption", VCPU_STAT(exit_program_interruption) },
{ "exit_instr_and_program_int", VCPU_STAT(exit_instr_and_program) },
- { "instruction_lctg", VCPU_STAT(instruction_lctg) },
+ { "instruction_lctlg", VCPU_STAT(instruction_lctlg) },
{ "instruction_lctl", VCPU_STAT(instruction_lctl) },
{ "deliver_emergency_signal", VCPU_STAT(deliver_emergency_signal) },
{ "deliver_service_signal", VCPU_STAT(deliver_service_signal) },
@@ -112,7 +112,12 @@ long kvm_arch_dev_ioctl(struct file *filp,
int kvm_dev_ioctl_check_extension(long ext)
{
- return 0;
+ switch (ext) {
+ case KVM_CAP_USER_MEMORY:
+ return 1;
+ default:
+ return 0;
+ }
}
/* Section: vm related */
diff --git a/arch/s390/kvm/sigp.c b/arch/s390/kvm/sigp.c
index 5a556114eaa..170392687ce 100644
--- a/arch/s390/kvm/sigp.c
+++ b/arch/s390/kvm/sigp.c
@@ -43,7 +43,8 @@
#define SIGP_STAT_RECEIVER_CHECK 0x00000001UL
-static int __sigp_sense(struct kvm_vcpu *vcpu, u16 cpu_addr, u64 *reg)
+static int __sigp_sense(struct kvm_vcpu *vcpu, u16 cpu_addr,
+ unsigned long *reg)
{
struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
int rc;
@@ -167,7 +168,7 @@ static int __sigp_set_arch(struct kvm_vcpu *vcpu, u32 parameter)
}
static int __sigp_set_prefix(struct kvm_vcpu *vcpu, u16 cpu_addr, u32 address,
- u64 *reg)
+ unsigned long *reg)
{
struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
struct kvm_s390_local_interrupt *li;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-08 12:42:49 +0000