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Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.7-201607…
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…29' into staging

ppc patch queue 2016-07-29

Here are the current pending ppc and spapr related patches for
qemu-2.7.  Given the freeze status, these are all bugfixes, with two
exceptions:

  * There's some final rework of the vcpu hotplug model.  Specifically
    we add spapr specific code on the generic basis Igor established
    to make cpu_index stable for pseries-2.7 and later machine types.
      - This allows us to remove the limitation that cpu cores had to
        be inserted in linear order, and removed in LIFO order.
      - This is worth merging this late in 2.7 because it will avoid
        considerable future grief with management layers needing to
        discover whether out-of-order hotplug is possible, amongst
        other things.
      - For now we do add a constraint that the initial cpu cannot be
        unplugged.
  * We add two extra testcases to make check, for postcopy and
    drive_del on ppc64.
      - Not strictly bugfixes, but safe, because they don't affect the
        actual code, and increase test coverage.

# gpg: Signature made Fri 29 Jul 2016 05:50:02 BST
# gpg:                using RSA key 0x6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>"
# gpg:                 aka "David Gibson (Red Hat) <dgibson@redhat.com>"
# gpg:                 aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E  87DC 6C38 CACA 20D9 B392

* remotes/dgibson/tags/ppc-for-2.7-20160729:
  tests: add drive_del-test to ppc/ppc64
  spapr: Prevent boot CPU core removal
  ppc: Fix fault PC reporting for lve*/stve* VMX instructions
  test: port postcopy test to ppc64
  Revert "spapr: Ensure CPU cores are added contiguously and removed in LIFO order"
  spapr: init CPUState->cpu_index with index relative to core-id

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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pm215 committed Jul 29, 2016
2 parents cbe81c6 + 059ce0f commit df2c359
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Showing 5 changed files with 122 additions and 48 deletions.
27 changes: 9 additions & 18 deletions hw/ppc/spapr_cpu_core.c
View file
Expand Up @@ -125,24 +125,19 @@ static void spapr_core_release(DeviceState *dev, void *opaque)
void spapr_core_unplug(HotplugHandler *hotplug_dev, DeviceState *dev,
Error **errp)
{
sPAPRMachineState *spapr = SPAPR_MACHINE(OBJECT(hotplug_dev));
CPUCore *cc = CPU_CORE(dev);
int smt = kvmppc_smt_threads();
int index = cc->core_id / smp_threads;
sPAPRDRConnector *drc =
spapr_dr_connector_by_id(SPAPR_DR_CONNECTOR_TYPE_CPU, index * smt);
sPAPRDRConnectorClass *drck;
Error *local_err = NULL;
int spapr_max_cores = max_cpus / smp_threads;
int i;

for (i = spapr_max_cores - 1; i > index; i--) {
if (spapr->cores[i]) {
error_setg(errp, "core-id %d should be removed first",
i * smp_threads);
return;
}
if (index == 0) {
error_setg(errp, "Boot CPU core may not be unplugged");
return;
}

g_assert(drc);

drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc);
Expand Down Expand Up @@ -224,7 +219,7 @@ void spapr_core_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(OBJECT(hotplug_dev));
sPAPRMachineState *spapr = SPAPR_MACHINE(OBJECT(hotplug_dev));
int spapr_max_cores = max_cpus / smp_threads;
int index, i;
int index;
Error *local_err = NULL;
CPUCore *cc = CPU_CORE(dev);
char *base_core_type = spapr_get_cpu_core_type(machine->cpu_model);
Expand Down Expand Up @@ -261,14 +256,6 @@ void spapr_core_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
goto out;
}

for (i = 0; i < index; i++) {
if (!spapr->cores[i]) {
error_setg(&local_err, "core-id %d should be added first",
i * smp_threads);
goto out;
}
}

out:
g_free(base_core_type);
error_propagate(errp, local_err);
Expand Down Expand Up @@ -307,9 +294,13 @@ static void spapr_cpu_core_realize(DeviceState *dev, Error **errp)
sc->threads = g_malloc0(size * cc->nr_threads);
for (i = 0; i < cc->nr_threads; i++) {
char id[32];
CPUState *cs;

obj = sc->threads + i * size;

object_initialize(obj, size, typename);
cs = CPU(obj);
cs->cpu_index = cc->core_id + i;
snprintf(id, sizeof(id), "thread[%d]", i);
object_property_add_child(OBJECT(sc), id, obj, &local_err);
if (local_err) {
Expand Down
21 changes: 11 additions & 10 deletions target-ppc/mem_helper.c
View file
Expand Up @@ -232,16 +232,16 @@ target_ulong helper_lscbx(CPUPPCState *env, target_ulong addr, uint32_t reg,
\
if (needs_byteswap(env)) { \
r->element[LO_IDX ? index : (adjust - index)] = \
swap(access(env, addr)); \
swap(access(env, addr, GETPC())); \
} else { \
r->element[LO_IDX ? index : (adjust - index)] = \
access(env, addr); \
access(env, addr, GETPC()); \
} \
}
#define I(x) (x)
LVE(lvebx, cpu_ldub_data, I, u8)
LVE(lvehx, cpu_lduw_data, bswap16, u16)
LVE(lvewx, cpu_ldl_data, bswap32, u32)
LVE(lvebx, cpu_ldub_data_ra, I, u8)
LVE(lvehx, cpu_lduw_data_ra, bswap16, u16)
LVE(lvewx, cpu_ldl_data_ra, bswap32, u32)
#undef I
#undef LVE

Expand All @@ -259,16 +259,17 @@ LVE(lvewx, cpu_ldl_data, bswap32, u32)
\
if (needs_byteswap(env)) { \
access(env, addr, swap(r->element[LO_IDX ? index : \
(adjust - index)])); \
(adjust - index)]), \
GETPC()); \
} else { \
access(env, addr, r->element[LO_IDX ? index : \
(adjust - index)]); \
(adjust - index)], GETPC()); \
} \
}
#define I(x) (x)
STVE(stvebx, cpu_stb_data, I, u8)
STVE(stvehx, cpu_stw_data, bswap16, u16)
STVE(stvewx, cpu_stl_data, bswap32, u32)
STVE(stvebx, cpu_stb_data_ra, I, u8)
STVE(stvehx, cpu_stw_data_ra, bswap16, u16)
STVE(stvewx, cpu_stl_data_ra, bswap32, u32)
#undef I
#undef LVE

Expand Down
3 changes: 3 additions & 0 deletions tests/Makefile.include
View file
Expand Up @@ -259,6 +259,8 @@ check-qtest-arm-y += tests/virtio-blk-test$(EXESUF)
gcov-files-arm-y += arm-softmmu/hw/block/virtio-blk.c
check-qtest-ppc-y += tests/boot-order-test$(EXESUF)
check-qtest-ppc64-y += tests/boot-order-test$(EXESUF)
check-qtest-ppc-y += tests/drive_del-test$(EXESUF)
check-qtest-ppc64-y += tests/drive_del-test$(EXESUF)
check-qtest-ppc64-y += tests/spapr-phb-test$(EXESUF)
gcov-files-ppc64-y += ppc64-softmmu/hw/ppc/spapr_pci.c
check-qtest-ppc-y += tests/prom-env-test$(EXESUF)
Expand All @@ -268,6 +270,7 @@ check-qtest-sparc-y += tests/prom-env-test$(EXESUF)
#check-qtest-sparc64-y += tests/prom-env-test$(EXESUF)
check-qtest-microblazeel-y = $(check-qtest-microblaze-y)
check-qtest-xtensaeb-y = $(check-qtest-xtensa-y)
check-qtest-ppc64-y += tests/postcopy-test$(EXESUF)

check-qtest-generic-y += tests/qom-test$(EXESUF)

Expand Down
3 changes: 2 additions & 1 deletion tests/drive_del-test.c
View file
Expand Up @@ -115,7 +115,8 @@ int main(int argc, char **argv)
qtest_add_func("/drive_del/without-dev", test_drive_without_dev);

/* TODO I guess any arch with PCI would do */
if (!strcmp(arch, "i386") || !strcmp(arch, "x86_64")) {
if (!strcmp(arch, "i386") || !strcmp(arch, "x86_64") ||
!strcmp(arch, "ppc") || !strcmp(arch, "ppc64")) {
qtest_add_func("/drive_del/after_failed_device_add",
test_after_failed_device_add);
qtest_add_func("/blockdev/drive_del_device_del",
Expand Down
116 changes: 97 additions & 19 deletions tests/postcopy-test.c
View file
Expand Up @@ -18,6 +18,9 @@
#include "qemu/sockets.h"
#include "sysemu/char.h"
#include "sysemu/sysemu.h"
#include "hw/nvram/openbios_firmware_abi.h"

#define MIN_NVRAM_SIZE 8192 /* from spapr_nvram.c */

const unsigned start_address = 1024 * 1024;
const unsigned end_address = 100 * 1024 * 1024;
Expand Down Expand Up @@ -122,6 +125,44 @@ unsigned char bootsect[] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0xaa
};

static void init_bootfile_x86(const char *bootpath)
{
FILE *bootfile = fopen(bootpath, "wb");

g_assert_cmpint(fwrite(bootsect, 512, 1, bootfile), ==, 1);
fclose(bootfile);
}

static void init_bootfile_ppc(const char *bootpath)
{
FILE *bootfile;
char buf[MIN_NVRAM_SIZE];
struct OpenBIOS_nvpart_v1 *header = (struct OpenBIOS_nvpart_v1 *)buf;

memset(buf, 0, MIN_NVRAM_SIZE);

/* Create a "common" partition in nvram to store boot-command property */

header->signature = OPENBIOS_PART_SYSTEM;
memcpy(header->name, "common", 6);
OpenBIOS_finish_partition(header, MIN_NVRAM_SIZE);

/* FW_MAX_SIZE is 4MB, but slof.bin is only 900KB,
* so let's modify memory between 1MB and 100MB
* to do like PC bootsector
*/

sprintf(buf + 16,
"boot-command=hex .\" _\" begin %x %x do i c@ 1 + i c! 1000 +loop "
".\" B\" 0 until", end_address, start_address);

/* Write partition to the NVRAM file */

bootfile = fopen(bootpath, "wb");
g_assert_cmpint(fwrite(buf, MIN_NVRAM_SIZE, 1, bootfile), ==, 1);
fclose(bootfile);
}

/*
* Wait for some output in the serial output file,
* we get an 'A' followed by an endless string of 'B's
Expand All @@ -131,10 +172,29 @@ static void wait_for_serial(const char *side)
{
char *serialpath = g_strdup_printf("%s/%s", tmpfs, side);
FILE *serialfile = fopen(serialpath, "r");
const char *arch = qtest_get_arch();
int started = (strcmp(side, "src_serial") == 0 &&
strcmp(arch, "ppc64") == 0) ? 0 : 1;

do {
int readvalue = fgetc(serialfile);

if (!started) {
/* SLOF prints its banner before starting test,
* to ignore it, mark the start of the test with '_',
* ignore all characters until this marker
*/
switch (readvalue) {
case '_':
started = 1;
break;
case EOF:
fseek(serialfile, 0, SEEK_SET);
usleep(1000);
break;
}
continue;
}
switch (readvalue) {
case 'A':
/* Fine */
Expand All @@ -147,6 +207,8 @@ static void wait_for_serial(const char *side)
return;

case EOF:
started = (strcmp(side, "src_serial") == 0 &&
strcmp(arch, "ppc64") == 0) ? 0 : 1;
fseek(serialfile, 0, SEEK_SET);
usleep(1000);
break;
Expand Down Expand Up @@ -295,32 +357,48 @@ static void test_migrate(void)
char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs);
QTestState *global = global_qtest, *from, *to;
unsigned char dest_byte_a, dest_byte_b, dest_byte_c, dest_byte_d;
gchar *cmd;
gchar *cmd, *cmd_src, *cmd_dst;
QDict *rsp;

char *bootpath = g_strdup_printf("%s/bootsect", tmpfs);
FILE *bootfile = fopen(bootpath, "wb");
const char *arch = qtest_get_arch();

got_stop = false;
g_assert_cmpint(fwrite(bootsect, 512, 1, bootfile), ==, 1);
fclose(bootfile);

cmd = g_strdup_printf("-machine accel=kvm:tcg -m 150M"
" -name pcsource,debug-threads=on"
" -serial file:%s/src_serial"
" -drive file=%s,format=raw",
tmpfs, bootpath);
from = qtest_start(cmd);
g_free(cmd);
if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {
init_bootfile_x86(bootpath);
cmd_src = g_strdup_printf("-machine accel=kvm:tcg -m 150M"
" -name pcsource,debug-threads=on"
" -serial file:%s/src_serial"
" -drive file=%s,format=raw",
tmpfs, bootpath);
cmd_dst = g_strdup_printf("-machine accel=kvm:tcg -m 150M"
" -name pcdest,debug-threads=on"
" -serial file:%s/dest_serial"
" -drive file=%s,format=raw"
" -incoming %s",
tmpfs, bootpath, uri);
} else if (strcmp(arch, "ppc64") == 0) {
init_bootfile_ppc(bootpath);
cmd_src = g_strdup_printf("-machine accel=kvm:tcg -m 256M"
" -name pcsource,debug-threads=on"
" -serial file:%s/src_serial"
" -drive file=%s,if=pflash,format=raw",
tmpfs, bootpath);
cmd_dst = g_strdup_printf("-machine accel=kvm:tcg -m 256M"
" -name pcdest,debug-threads=on"
" -serial file:%s/dest_serial"
" -incoming %s",
tmpfs, uri);
} else {
g_assert_not_reached();
}

cmd = g_strdup_printf("-machine accel=kvm:tcg -m 150M"
" -name pcdest,debug-threads=on"
" -serial file:%s/dest_serial"
" -drive file=%s,format=raw"
" -incoming %s",
tmpfs, bootpath, uri);
to = qtest_init(cmd);
g_free(cmd);
from = qtest_start(cmd_src);
g_free(cmd_src);

to = qtest_init(cmd_dst);
g_free(cmd_dst);

global_qtest = from;
rsp = qmp("{ 'execute': 'migrate-set-capabilities',"
Expand Down

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