2008-03-26 01:47:29 +08:00
|
|
|
/*
|
2012-07-20 17:15:04 +08:00
|
|
|
* handling privileged instructions
|
2008-03-26 01:47:29 +08:00
|
|
|
*
|
|
|
|
|
* Copyright IBM Corp. 2008
|
|
|
|
|
*
|
|
|
|
|
* 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)
|
|
|
|
|
* as published by the Free Software Foundation.
|
|
|
|
|
*
|
|
|
|
|
* Author(s): Carsten Otte <cotte@de.ibm.com>
|
|
|
|
|
* Christian Borntraeger <borntraeger@de.ibm.com>
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
#include <linux/kvm.h>
|
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 16:04:11 +08:00
|
|
|
#include <linux/gfp.h>
|
2008-03-26 01:47:29 +08:00
|
|
|
#include <linux/errno.h>
|
|
|
|
|
#include <asm/current.h>
|
|
|
|
|
#include <asm/debug.h>
|
|
|
|
|
#include <asm/ebcdic.h>
|
|
|
|
|
#include <asm/sysinfo.h>
|
2012-12-20 22:32:09 +08:00
|
|
|
#include <asm/ptrace.h>
|
|
|
|
|
#include <asm/compat.h>
|
2008-03-26 01:47:29 +08:00
|
|
|
#include "gaccess.h"
|
|
|
|
|
#include "kvm-s390.h"
|
2012-07-23 23:20:29 +08:00
|
|
|
#include "trace.h"
|
2008-03-26 01:47:29 +08:00
|
|
|
|
|
|
|
|
static int handle_set_prefix(struct kvm_vcpu *vcpu)
|
|
|
|
|
{
|
|
|
|
|
u64 operand2;
|
|
|
|
|
u32 address = 0;
|
|
|
|
|
u8 tmp;
|
|
|
|
|
|
|
|
|
|
vcpu->stat.instruction_spx++;
|
|
|
|
|
|
2012-12-20 22:32:07 +08:00
|
|
|
operand2 = kvm_s390_get_base_disp_s(vcpu);
|
2008-03-26 01:47:29 +08:00
|
|
|
|
|
|
|
|
/* must be word boundary */
|
|
|
|
|
if (operand2 & 3) {
|
|
|
|
|
kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* get the value */
|
|
|
|
|
if (get_guest_u32(vcpu, operand2, &address)) {
|
|
|
|
|
kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
address = address & 0x7fffe000u;
|
|
|
|
|
|
|
|
|
|
/* make sure that the new value is valid memory */
|
|
|
|
|
if (copy_from_guest_absolute(vcpu, &tmp, address, 1) ||
|
|
|
|
|
(copy_from_guest_absolute(vcpu, &tmp, address + PAGE_SIZE, 1))) {
|
|
|
|
|
kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
2012-01-11 18:19:32 +08:00
|
|
|
kvm_s390_set_prefix(vcpu, address);
|
2008-03-26 01:47:29 +08:00
|
|
|
|
|
|
|
|
VCPU_EVENT(vcpu, 5, "setting prefix to %x", address);
|
2012-07-23 23:20:29 +08:00
|
|
|
trace_kvm_s390_handle_prefix(vcpu, 1, address);
|
2008-03-26 01:47:29 +08:00
|
|
|
out:
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int handle_store_prefix(struct kvm_vcpu *vcpu)
|
|
|
|
|
{
|
|
|
|
|
u64 operand2;
|
|
|
|
|
u32 address;
|
|
|
|
|
|
|
|
|
|
vcpu->stat.instruction_stpx++;
|
2012-12-20 22:32:07 +08:00
|
|
|
|
|
|
|
|
operand2 = kvm_s390_get_base_disp_s(vcpu);
|
2008-03-26 01:47:29 +08:00
|
|
|
|
|
|
|
|
/* must be word boundary */
|
|
|
|
|
if (operand2 & 3) {
|
|
|
|
|
kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
address = vcpu->arch.sie_block->prefix;
|
|
|
|
|
address = address & 0x7fffe000u;
|
|
|
|
|
|
|
|
|
|
/* get the value */
|
|
|
|
|
if (put_guest_u32(vcpu, operand2, address)) {
|
|
|
|
|
kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
VCPU_EVENT(vcpu, 5, "storing prefix to %x", address);
|
2012-07-23 23:20:29 +08:00
|
|
|
trace_kvm_s390_handle_prefix(vcpu, 0, address);
|
2008-03-26 01:47:29 +08:00
|
|
|
out:
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int handle_store_cpu_address(struct kvm_vcpu *vcpu)
|
|
|
|
|
{
|
|
|
|
|
u64 useraddr;
|
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
|
|
vcpu->stat.instruction_stap++;
|
2012-12-20 22:32:07 +08:00
|
|
|
|
|
|
|
|
useraddr = kvm_s390_get_base_disp_s(vcpu);
|
2008-03-26 01:47:29 +08:00
|
|
|
|
|
|
|
|
if (useraddr & 1) {
|
|
|
|
|
kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
rc = put_guest_u16(vcpu, useraddr, vcpu->vcpu_id);
|
|
|
|
|
if (rc == -EFAULT) {
|
|
|
|
|
kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
2009-01-09 19:14:56 +08:00
|
|
|
VCPU_EVENT(vcpu, 5, "storing cpu address to %llx", useraddr);
|
2012-07-23 23:20:29 +08:00
|
|
|
trace_kvm_s390_handle_stap(vcpu, useraddr);
|
2008-03-26 01:47:29 +08:00
|
|
|
out:
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int handle_skey(struct kvm_vcpu *vcpu)
|
|
|
|
|
{
|
|
|
|
|
vcpu->stat.instruction_storage_key++;
|
|
|
|
|
vcpu->arch.sie_block->gpsw.addr -= 4;
|
|
|
|
|
VCPU_EVENT(vcpu, 4, "%s", "retrying storage key operation");
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
2012-12-20 22:32:12 +08:00
|
|
|
static int handle_tpi(struct kvm_vcpu *vcpu)
|
2008-03-26 01:47:29 +08:00
|
|
|
{
|
2012-12-20 22:32:12 +08:00
|
|
|
u64 addr;
|
|
|
|
|
struct kvm_s390_interrupt_info *inti;
|
|
|
|
|
int cc;
|
|
|
|
|
|
|
|
|
|
addr = kvm_s390_get_base_disp_s(vcpu);
|
|
|
|
|
|
|
|
|
|
inti = kvm_s390_get_io_int(vcpu->kvm, vcpu->run->s.regs.crs[6], 0);
|
|
|
|
|
if (inti) {
|
|
|
|
|
if (addr) {
|
|
|
|
|
/*
|
|
|
|
|
* Store the two-word I/O interruption code into the
|
|
|
|
|
* provided area.
|
|
|
|
|
*/
|
|
|
|
|
put_guest_u16(vcpu, addr, inti->io.subchannel_id);
|
|
|
|
|
put_guest_u16(vcpu, addr + 2, inti->io.subchannel_nr);
|
|
|
|
|
put_guest_u32(vcpu, addr + 4, inti->io.io_int_parm);
|
|
|
|
|
} else {
|
|
|
|
|
/*
|
|
|
|
|
* Store the three-word I/O interruption code into
|
|
|
|
|
* the appropriate lowcore area.
|
|
|
|
|
*/
|
|
|
|
|
put_guest_u16(vcpu, 184, inti->io.subchannel_id);
|
|
|
|
|
put_guest_u16(vcpu, 186, inti->io.subchannel_nr);
|
|
|
|
|
put_guest_u32(vcpu, 188, inti->io.io_int_parm);
|
|
|
|
|
put_guest_u32(vcpu, 192, inti->io.io_int_word);
|
|
|
|
|
}
|
|
|
|
|
cc = 1;
|
|
|
|
|
} else
|
|
|
|
|
cc = 0;
|
|
|
|
|
kfree(inti);
|
|
|
|
|
/* Set condition code and we're done. */
|
2008-03-26 01:47:29 +08:00
|
|
|
vcpu->arch.sie_block->gpsw.mask &= ~(3ul << 44);
|
2012-12-20 22:32:12 +08:00
|
|
|
vcpu->arch.sie_block->gpsw.mask |= (cc & 3ul) << 44;
|
2008-03-26 01:47:29 +08:00
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
2012-12-20 22:32:12 +08:00
|
|
|
static int handle_tsch(struct kvm_vcpu *vcpu)
|
|
|
|
|
{
|
|
|
|
|
struct kvm_s390_interrupt_info *inti;
|
|
|
|
|
|
|
|
|
|
inti = kvm_s390_get_io_int(vcpu->kvm, 0,
|
|
|
|
|
vcpu->run->s.regs.gprs[1]);
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Prepare exit to userspace.
|
|
|
|
|
* We indicate whether we dequeued a pending I/O interrupt
|
|
|
|
|
* so that userspace can re-inject it if the instruction gets
|
|
|
|
|
* a program check. While this may re-order the pending I/O
|
|
|
|
|
* interrupts, this is no problem since the priority is kept
|
|
|
|
|
* intact.
|
|
|
|
|
*/
|
|
|
|
|
vcpu->run->exit_reason = KVM_EXIT_S390_TSCH;
|
|
|
|
|
vcpu->run->s390_tsch.dequeued = !!inti;
|
|
|
|
|
if (inti) {
|
|
|
|
|
vcpu->run->s390_tsch.subchannel_id = inti->io.subchannel_id;
|
|
|
|
|
vcpu->run->s390_tsch.subchannel_nr = inti->io.subchannel_nr;
|
|
|
|
|
vcpu->run->s390_tsch.io_int_parm = inti->io.io_int_parm;
|
|
|
|
|
vcpu->run->s390_tsch.io_int_word = inti->io.io_int_word;
|
|
|
|
|
}
|
|
|
|
|
vcpu->run->s390_tsch.ipb = vcpu->arch.sie_block->ipb;
|
|
|
|
|
kfree(inti);
|
|
|
|
|
return -EREMOTE;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int handle_io_inst(struct kvm_vcpu *vcpu)
|
|
|
|
|
{
|
|
|
|
|
VCPU_EVENT(vcpu, 4, "%s", "I/O instruction");
|
|
|
|
|
|
|
|
|
|
if (vcpu->kvm->arch.css_support) {
|
|
|
|
|
/*
|
|
|
|
|
* Most I/O instructions will be handled by userspace.
|
|
|
|
|
* Exceptions are tpi and the interrupt portion of tsch.
|
|
|
|
|
*/
|
|
|
|
|
if (vcpu->arch.sie_block->ipa == 0xb236)
|
|
|
|
|
return handle_tpi(vcpu);
|
|
|
|
|
if (vcpu->arch.sie_block->ipa == 0xb235)
|
|
|
|
|
return handle_tsch(vcpu);
|
|
|
|
|
/* Handle in userspace. */
|
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
|
} else {
|
|
|
|
|
/*
|
|
|
|
|
* Set condition code 3 to stop the guest from issueing channel
|
|
|
|
|
* I/O instructions.
|
|
|
|
|
*/
|
|
|
|
|
vcpu->arch.sie_block->gpsw.mask &= ~(3ul << 44);
|
|
|
|
|
vcpu->arch.sie_block->gpsw.mask |= (3 & 3ul) << 44;
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
2008-03-26 01:47:29 +08:00
|
|
|
static int handle_stfl(struct kvm_vcpu *vcpu)
|
|
|
|
|
{
|
2010-10-25 22:10:51 +08:00
|
|
|
unsigned int facility_list;
|
2008-03-26 01:47:29 +08:00
|
|
|
int rc;
|
|
|
|
|
|
|
|
|
|
vcpu->stat.instruction_stfl++;
|
2008-08-29 19:29:45 +08:00
|
|
|
/* only pass the facility bits, which we can handle */
|
2010-10-25 22:10:51 +08:00
|
|
|
facility_list = S390_lowcore.stfl_fac_list & 0xff00fff3;
|
2008-03-26 01:47:29 +08:00
|
|
|
|
|
|
|
|
rc = copy_to_guest(vcpu, offsetof(struct _lowcore, stfl_fac_list),
|
|
|
|
|
&facility_list, sizeof(facility_list));
|
|
|
|
|
if (rc == -EFAULT)
|
|
|
|
|
kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
|
2012-07-23 23:20:29 +08:00
|
|
|
else {
|
2008-03-26 01:47:29 +08:00
|
|
|
VCPU_EVENT(vcpu, 5, "store facility list value %x",
|
|
|
|
|
facility_list);
|
2012-07-23 23:20:29 +08:00
|
|
|
trace_kvm_s390_handle_stfl(vcpu, facility_list);
|
|
|
|
|
}
|
2008-03-26 01:47:29 +08:00
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
2012-12-20 22:32:09 +08:00
|
|
|
static void handle_new_psw(struct kvm_vcpu *vcpu)
|
|
|
|
|
{
|
|
|
|
|
/* Check whether the new psw is enabled for machine checks. */
|
|
|
|
|
if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_MCHECK)
|
|
|
|
|
kvm_s390_deliver_pending_machine_checks(vcpu);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#define PSW_MASK_ADDR_MODE (PSW_MASK_EA | PSW_MASK_BA)
|
|
|
|
|
#define PSW_MASK_UNASSIGNED 0xb80800fe7fffffffUL
|
|
|
|
|
#define PSW_ADDR_24 0x00000000000fffffUL
|
|
|
|
|
#define PSW_ADDR_31 0x000000007fffffffUL
|
|
|
|
|
|
|
|
|
|
int kvm_s390_handle_lpsw(struct kvm_vcpu *vcpu)
|
|
|
|
|
{
|
|
|
|
|
u64 addr;
|
|
|
|
|
psw_compat_t new_psw;
|
|
|
|
|
|
|
|
|
|
if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
|
|
|
|
|
return kvm_s390_inject_program_int(vcpu,
|
|
|
|
|
PGM_PRIVILEGED_OPERATION);
|
|
|
|
|
|
|
|
|
|
addr = kvm_s390_get_base_disp_s(vcpu);
|
|
|
|
|
|
|
|
|
|
if (addr & 7) {
|
|
|
|
|
kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (copy_from_guest(vcpu, &new_psw, addr, sizeof(new_psw))) {
|
|
|
|
|
kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (!(new_psw.mask & PSW32_MASK_BASE)) {
|
|
|
|
|
kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
vcpu->arch.sie_block->gpsw.mask =
|
|
|
|
|
(new_psw.mask & ~PSW32_MASK_BASE) << 32;
|
|
|
|
|
vcpu->arch.sie_block->gpsw.addr = new_psw.addr;
|
|
|
|
|
|
|
|
|
|
if ((vcpu->arch.sie_block->gpsw.mask & PSW_MASK_UNASSIGNED) ||
|
|
|
|
|
(!(vcpu->arch.sie_block->gpsw.mask & PSW_MASK_ADDR_MODE) &&
|
|
|
|
|
(vcpu->arch.sie_block->gpsw.addr & ~PSW_ADDR_24)) ||
|
|
|
|
|
((vcpu->arch.sie_block->gpsw.mask & PSW_MASK_ADDR_MODE) ==
|
|
|
|
|
PSW_MASK_EA)) {
|
|
|
|
|
kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
handle_new_psw(vcpu);
|
|
|
|
|
out:
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int handle_lpswe(struct kvm_vcpu *vcpu)
|
|
|
|
|
{
|
|
|
|
|
u64 addr;
|
|
|
|
|
psw_t new_psw;
|
|
|
|
|
|
|
|
|
|
addr = kvm_s390_get_base_disp_s(vcpu);
|
|
|
|
|
|
|
|
|
|
if (addr & 7) {
|
|
|
|
|
kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (copy_from_guest(vcpu, &new_psw, addr, sizeof(new_psw))) {
|
|
|
|
|
kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
vcpu->arch.sie_block->gpsw.mask = new_psw.mask;
|
|
|
|
|
vcpu->arch.sie_block->gpsw.addr = new_psw.addr;
|
|
|
|
|
|
|
|
|
|
if ((vcpu->arch.sie_block->gpsw.mask & PSW_MASK_UNASSIGNED) ||
|
|
|
|
|
(((vcpu->arch.sie_block->gpsw.mask & PSW_MASK_ADDR_MODE) ==
|
|
|
|
|
PSW_MASK_BA) &&
|
|
|
|
|
(vcpu->arch.sie_block->gpsw.addr & ~PSW_ADDR_31)) ||
|
|
|
|
|
(!(vcpu->arch.sie_block->gpsw.mask & PSW_MASK_ADDR_MODE) &&
|
|
|
|
|
(vcpu->arch.sie_block->gpsw.addr & ~PSW_ADDR_24)) ||
|
|
|
|
|
((vcpu->arch.sie_block->gpsw.mask & PSW_MASK_ADDR_MODE) ==
|
|
|
|
|
PSW_MASK_EA)) {
|
|
|
|
|
kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
handle_new_psw(vcpu);
|
|
|
|
|
out:
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
2008-03-26 01:47:29 +08:00
|
|
|
static int handle_stidp(struct kvm_vcpu *vcpu)
|
|
|
|
|
{
|
|
|
|
|
u64 operand2;
|
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
|
|
vcpu->stat.instruction_stidp++;
|
2012-12-20 22:32:07 +08:00
|
|
|
|
|
|
|
|
operand2 = kvm_s390_get_base_disp_s(vcpu);
|
2008-03-26 01:47:29 +08:00
|
|
|
|
|
|
|
|
if (operand2 & 7) {
|
|
|
|
|
kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
rc = put_guest_u64(vcpu, operand2, vcpu->arch.stidp_data);
|
|
|
|
|
if (rc == -EFAULT) {
|
|
|
|
|
kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
VCPU_EVENT(vcpu, 5, "%s", "store cpu id");
|
|
|
|
|
out:
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void handle_stsi_3_2_2(struct kvm_vcpu *vcpu, struct sysinfo_3_2_2 *mem)
|
|
|
|
|
{
|
2008-06-27 21:05:40 +08:00
|
|
|
struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
|
2008-03-26 01:47:29 +08:00
|
|
|
int cpus = 0;
|
|
|
|
|
int n;
|
|
|
|
|
|
2009-05-12 23:21:50 +08:00
|
|
|
spin_lock(&fi->lock);
|
2008-03-26 01:47:29 +08:00
|
|
|
for (n = 0; n < KVM_MAX_VCPUS; n++)
|
|
|
|
|
if (fi->local_int[n])
|
|
|
|
|
cpus++;
|
2009-05-12 23:21:50 +08:00
|
|
|
spin_unlock(&fi->lock);
|
2008-03-26 01:47:29 +08:00
|
|
|
|
|
|
|
|
/* deal with other level 3 hypervisors */
|
2012-09-06 20:42:13 +08:00
|
|
|
if (stsi(mem, 3, 2, 2))
|
2008-03-26 01:47:29 +08:00
|
|
|
mem->count = 0;
|
|
|
|
|
if (mem->count < 8)
|
|
|
|
|
mem->count++;
|
|
|
|
|
for (n = mem->count - 1; n > 0 ; n--)
|
|
|
|
|
memcpy(&mem->vm[n], &mem->vm[n - 1], sizeof(mem->vm[0]));
|
|
|
|
|
|
|
|
|
|
mem->vm[0].cpus_total = cpus;
|
|
|
|
|
mem->vm[0].cpus_configured = cpus;
|
|
|
|
|
mem->vm[0].cpus_standby = 0;
|
|
|
|
|
mem->vm[0].cpus_reserved = 0;
|
|
|
|
|
mem->vm[0].caf = 1000;
|
|
|
|
|
memcpy(mem->vm[0].name, "KVMguest", 8);
|
|
|
|
|
ASCEBC(mem->vm[0].name, 8);
|
|
|
|
|
memcpy(mem->vm[0].cpi, "KVM/Linux ", 16);
|
|
|
|
|
ASCEBC(mem->vm[0].cpi, 16);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int handle_stsi(struct kvm_vcpu *vcpu)
|
|
|
|
|
{
|
2012-01-11 18:20:32 +08:00
|
|
|
int fc = (vcpu->run->s.regs.gprs[0] & 0xf0000000) >> 28;
|
|
|
|
|
int sel1 = vcpu->run->s.regs.gprs[0] & 0xff;
|
|
|
|
|
int sel2 = vcpu->run->s.regs.gprs[1] & 0xffff;
|
2008-03-26 01:47:29 +08:00
|
|
|
u64 operand2;
|
|
|
|
|
unsigned long mem;
|
|
|
|
|
|
|
|
|
|
vcpu->stat.instruction_stsi++;
|
|
|
|
|
VCPU_EVENT(vcpu, 4, "stsi: fc: %x sel1: %x sel2: %x", fc, sel1, sel2);
|
|
|
|
|
|
2012-12-20 22:32:07 +08:00
|
|
|
operand2 = kvm_s390_get_base_disp_s(vcpu);
|
2008-03-26 01:47:29 +08:00
|
|
|
|
|
|
|
|
if (operand2 & 0xfff && fc > 0)
|
|
|
|
|
return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
|
|
|
|
|
|
|
|
|
|
switch (fc) {
|
|
|
|
|
case 0:
|
2012-01-11 18:20:32 +08:00
|
|
|
vcpu->run->s.regs.gprs[0] = 3 << 28;
|
2008-03-26 01:47:29 +08:00
|
|
|
vcpu->arch.sie_block->gpsw.mask &= ~(3ul << 44);
|
|
|
|
|
return 0;
|
|
|
|
|
case 1: /* same handling for 1 and 2 */
|
|
|
|
|
case 2:
|
|
|
|
|
mem = get_zeroed_page(GFP_KERNEL);
|
|
|
|
|
if (!mem)
|
|
|
|
|
goto out_fail;
|
2012-09-06 20:42:13 +08:00
|
|
|
if (stsi((void *) mem, fc, sel1, sel2))
|
2008-03-26 01:47:29 +08:00
|
|
|
goto out_mem;
|
|
|
|
|
break;
|
|
|
|
|
case 3:
|
|
|
|
|
if (sel1 != 2 || sel2 != 2)
|
|
|
|
|
goto out_fail;
|
|
|
|
|
mem = get_zeroed_page(GFP_KERNEL);
|
|
|
|
|
if (!mem)
|
|
|
|
|
goto out_fail;
|
|
|
|
|
handle_stsi_3_2_2(vcpu, (void *) mem);
|
|
|
|
|
break;
|
|
|
|
|
default:
|
|
|
|
|
goto out_fail;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (copy_to_guest_absolute(vcpu, operand2, (void *) mem, PAGE_SIZE)) {
|
|
|
|
|
kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
|
|
|
|
|
goto out_mem;
|
|
|
|
|
}
|
2012-07-23 23:20:29 +08:00
|
|
|
trace_kvm_s390_handle_stsi(vcpu, fc, sel1, sel2, operand2);
|
2008-03-26 01:47:29 +08:00
|
|
|
free_page(mem);
|
|
|
|
|
vcpu->arch.sie_block->gpsw.mask &= ~(3ul << 44);
|
2012-01-11 18:20:32 +08:00
|
|
|
vcpu->run->s.regs.gprs[0] = 0;
|
2008-03-26 01:47:29 +08:00
|
|
|
return 0;
|
|
|
|
|
out_mem:
|
|
|
|
|
free_page(mem);
|
|
|
|
|
out_fail:
|
|
|
|
|
/* condition code 3 */
|
|
|
|
|
vcpu->arch.sie_block->gpsw.mask |= 3ul << 44;
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
2012-12-20 22:32:10 +08:00
|
|
|
static const intercept_handler_t b2_handlers[256] = {
|
2008-03-26 01:47:29 +08:00
|
|
|
[0x02] = handle_stidp,
|
|
|
|
|
[0x10] = handle_set_prefix,
|
|
|
|
|
[0x11] = handle_store_prefix,
|
|
|
|
|
[0x12] = handle_store_cpu_address,
|
|
|
|
|
[0x29] = handle_skey,
|
|
|
|
|
[0x2a] = handle_skey,
|
|
|
|
|
[0x2b] = handle_skey,
|
2012-12-20 22:32:10 +08:00
|
|
|
[0x30] = handle_io_inst,
|
|
|
|
|
[0x31] = handle_io_inst,
|
|
|
|
|
[0x32] = handle_io_inst,
|
|
|
|
|
[0x33] = handle_io_inst,
|
|
|
|
|
[0x34] = handle_io_inst,
|
|
|
|
|
[0x35] = handle_io_inst,
|
|
|
|
|
[0x36] = handle_io_inst,
|
|
|
|
|
[0x37] = handle_io_inst,
|
|
|
|
|
[0x38] = handle_io_inst,
|
|
|
|
|
[0x39] = handle_io_inst,
|
|
|
|
|
[0x3a] = handle_io_inst,
|
|
|
|
|
[0x3b] = handle_io_inst,
|
|
|
|
|
[0x3c] = handle_io_inst,
|
|
|
|
|
[0x5f] = handle_io_inst,
|
|
|
|
|
[0x74] = handle_io_inst,
|
|
|
|
|
[0x76] = handle_io_inst,
|
2008-03-26 01:47:29 +08:00
|
|
|
[0x7d] = handle_stsi,
|
|
|
|
|
[0xb1] = handle_stfl,
|
2012-12-20 22:32:09 +08:00
|
|
|
[0xb2] = handle_lpswe,
|
2008-03-26 01:47:29 +08:00
|
|
|
};
|
|
|
|
|
|
2009-01-22 17:28:29 +08:00
|
|
|
int kvm_s390_handle_b2(struct kvm_vcpu *vcpu)
|
2008-03-26 01:47:29 +08:00
|
|
|
{
|
|
|
|
|
intercept_handler_t handler;
|
|
|
|
|
|
2009-01-22 17:28:29 +08:00
|
|
|
/*
|
|
|
|
|
* a lot of B2 instructions are priviledged. We first check for
|
2011-03-31 09:57:33 +08:00
|
|
|
* the privileged ones, that we can handle in the kernel. If the
|
2009-01-22 17:28:29 +08:00
|
|
|
* kernel can handle this instruction, we check for the problem
|
|
|
|
|
* state bit and (a) handle the instruction or (b) send a code 2
|
|
|
|
|
* program check.
|
|
|
|
|
* Anything else goes to userspace.*/
|
2012-12-20 22:32:10 +08:00
|
|
|
handler = b2_handlers[vcpu->arch.sie_block->ipa & 0x00ff];
|
2009-01-22 17:28:29 +08:00
|
|
|
if (handler) {
|
|
|
|
|
if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
|
|
|
|
|
return kvm_s390_inject_program_int(vcpu,
|
|
|
|
|
PGM_PRIVILEGED_OPERATION);
|
|
|
|
|
else
|
|
|
|
|
return handler(vcpu);
|
|
|
|
|
}
|
2010-02-27 05:37:41 +08:00
|
|
|
return -EOPNOTSUPP;
|
2008-03-26 01:47:29 +08:00
|
|
|
}
|
2011-07-24 16:48:17 +08:00
|
|
|
|
2012-12-20 22:32:09 +08:00
|
|
|
static int handle_epsw(struct kvm_vcpu *vcpu)
|
|
|
|
|
{
|
|
|
|
|
int reg1, reg2;
|
|
|
|
|
|
|
|
|
|
reg1 = (vcpu->arch.sie_block->ipb & 0x00f00000) >> 24;
|
|
|
|
|
reg2 = (vcpu->arch.sie_block->ipb & 0x000f0000) >> 16;
|
|
|
|
|
|
|
|
|
|
/* This basically extracts the mask half of the psw. */
|
|
|
|
|
vcpu->run->s.regs.gprs[reg1] &= 0xffffffff00000000;
|
|
|
|
|
vcpu->run->s.regs.gprs[reg1] |= vcpu->arch.sie_block->gpsw.mask >> 32;
|
|
|
|
|
if (reg2) {
|
|
|
|
|
vcpu->run->s.regs.gprs[reg2] &= 0xffffffff00000000;
|
|
|
|
|
vcpu->run->s.regs.gprs[reg2] |=
|
|
|
|
|
vcpu->arch.sie_block->gpsw.mask & 0x00000000ffffffff;
|
|
|
|
|
}
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static const intercept_handler_t b9_handlers[256] = {
|
|
|
|
|
[0x8d] = handle_epsw,
|
2012-12-20 22:32:10 +08:00
|
|
|
[0x9c] = handle_io_inst,
|
2012-12-20 22:32:09 +08:00
|
|
|
};
|
|
|
|
|
|
|
|
|
|
int kvm_s390_handle_b9(struct kvm_vcpu *vcpu)
|
|
|
|
|
{
|
|
|
|
|
intercept_handler_t handler;
|
|
|
|
|
|
|
|
|
|
/* This is handled just as for the B2 instructions. */
|
|
|
|
|
handler = b9_handlers[vcpu->arch.sie_block->ipa & 0x00ff];
|
|
|
|
|
if (handler) {
|
|
|
|
|
if ((handler != handle_epsw) &&
|
|
|
|
|
(vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE))
|
|
|
|
|
return kvm_s390_inject_program_int(vcpu,
|
|
|
|
|
PGM_PRIVILEGED_OPERATION);
|
|
|
|
|
else
|
|
|
|
|
return handler(vcpu);
|
|
|
|
|
}
|
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
|
}
|
|
|
|
|
|
2012-12-20 22:32:10 +08:00
|
|
|
static const intercept_handler_t eb_handlers[256] = {
|
|
|
|
|
[0x8a] = handle_io_inst,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
int kvm_s390_handle_priv_eb(struct kvm_vcpu *vcpu)
|
|
|
|
|
{
|
|
|
|
|
intercept_handler_t handler;
|
|
|
|
|
|
|
|
|
|
/* All eb instructions that end up here are privileged. */
|
|
|
|
|
if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
|
|
|
|
|
return kvm_s390_inject_program_int(vcpu,
|
|
|
|
|
PGM_PRIVILEGED_OPERATION);
|
|
|
|
|
handler = eb_handlers[vcpu->arch.sie_block->ipb & 0xff];
|
|
|
|
|
if (handler)
|
|
|
|
|
return handler(vcpu);
|
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
|
}
|
|
|
|
|
|
2011-07-24 16:48:17 +08:00
|
|
|
static int handle_tprot(struct kvm_vcpu *vcpu)
|
|
|
|
|
{
|
2012-12-20 22:32:07 +08:00
|
|
|
u64 address1, address2;
|
2011-07-24 16:48:17 +08:00
|
|
|
struct vm_area_struct *vma;
|
2011-11-17 18:00:43 +08:00
|
|
|
unsigned long user_address;
|
2011-07-24 16:48:17 +08:00
|
|
|
|
|
|
|
|
vcpu->stat.instruction_tprot++;
|
|
|
|
|
|
2012-12-20 22:32:07 +08:00
|
|
|
kvm_s390_get_base_disp_sse(vcpu, &address1, &address2);
|
|
|
|
|
|
2011-07-24 16:48:17 +08:00
|
|
|
/* we only handle the Linux memory detection case:
|
|
|
|
|
* access key == 0
|
|
|
|
|
* guest DAT == off
|
|
|
|
|
* everything else goes to userspace. */
|
|
|
|
|
if (address2 & 0xf0)
|
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
|
if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_DAT)
|
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
|
|
|
|
|
|
|
2011-11-17 18:00:43 +08:00
|
|
|
/* we must resolve the address without holding the mmap semaphore.
|
|
|
|
|
* This is ok since the userspace hypervisor is not supposed to change
|
|
|
|
|
* the mapping while the guest queries the memory. Otherwise the guest
|
|
|
|
|
* might crash or get wrong info anyway. */
|
|
|
|
|
user_address = (unsigned long) __guestaddr_to_user(vcpu, address1);
|
|
|
|
|
|
2011-07-24 16:48:17 +08:00
|
|
|
down_read(¤t->mm->mmap_sem);
|
2011-11-17 18:00:43 +08:00
|
|
|
vma = find_vma(current->mm, user_address);
|
2011-07-24 16:48:17 +08:00
|
|
|
if (!vma) {
|
|
|
|
|
up_read(¤t->mm->mmap_sem);
|
|
|
|
|
return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
vcpu->arch.sie_block->gpsw.mask &= ~(3ul << 44);
|
|
|
|
|
if (!(vma->vm_flags & VM_WRITE) && (vma->vm_flags & VM_READ))
|
|
|
|
|
vcpu->arch.sie_block->gpsw.mask |= (1ul << 44);
|
|
|
|
|
if (!(vma->vm_flags & VM_WRITE) && !(vma->vm_flags & VM_READ))
|
|
|
|
|
vcpu->arch.sie_block->gpsw.mask |= (2ul << 44);
|
|
|
|
|
|
|
|
|
|
up_read(¤t->mm->mmap_sem);
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int kvm_s390_handle_e5(struct kvm_vcpu *vcpu)
|
|
|
|
|
{
|
|
|
|
|
/* For e5xx... instructions we only handle TPROT */
|
|
|
|
|
if ((vcpu->arch.sie_block->ipa & 0x00ff) == 0x01)
|
|
|
|
|
return handle_tprot(vcpu);
|
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
|
}
|
|
|
|
|
|
2012-04-24 15:24:44 +08:00
|
|
|
static int handle_sckpf(struct kvm_vcpu *vcpu)
|
|
|
|
|
{
|
|
|
|
|
u32 value;
|
|
|
|
|
|
|
|
|
|
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[0] & 0x00000000ffff0000)
|
|
|
|
|
return kvm_s390_inject_program_int(vcpu,
|
|
|
|
|
PGM_SPECIFICATION);
|
|
|
|
|
|
|
|
|
|
value = vcpu->run->s.regs.gprs[0] & 0x000000000000ffff;
|
|
|
|
|
vcpu->arch.sie_block->todpr = value;
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
2012-12-20 22:32:06 +08:00
|
|
|
static const intercept_handler_t x01_handlers[256] = {
|
2012-04-24 15:24:44 +08:00
|
|
|
[0x07] = handle_sckpf,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
int kvm_s390_handle_01(struct kvm_vcpu *vcpu)
|
|
|
|
|
{
|
|
|
|
|
intercept_handler_t handler;
|
|
|
|
|
|
|
|
|
|
handler = x01_handlers[vcpu->arch.sie_block->ipa & 0x00ff];
|
|
|
|
|
if (handler)
|
|
|
|
|
return handler(vcpu);
|
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
|
}
|