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x86 and CPU bug fixes for 6.0-rc3

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* Add missing features to EPYC-Rome CPU model (Babu Moger)
 * Fix crash with "-device ...-cpu-core,help" (Greg Kurz)
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Merge remote-tracking branch 'remotes/ehabkost-gl/tags/x86-next-pull-request' into staging

x86 and CPU bug fixes for 6.0-rc3

* Add missing features to EPYC-Rome CPU model (Babu Moger)
* Fix crash with "-device ...-cpu-core,help" (Greg Kurz)

# gpg: Signature made Fri 09 Apr 2021 21:20:18 BST
# gpg:                using RSA key 5A322FD5ABC4D3DBACCFD1AA2807936F984DC5A6
# gpg:                issuer "ehabkost@redhat.com"
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>" [full]
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF  D1AA 2807 936F 984D C5A6

* remotes/ehabkost-gl/tags/x86-next-pull-request:
  cpu/core: Fix "help" of CPU core device types
  i386: Add missing cpu feature bits in EPYC-Rome model

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2021-04-10 16:58:56 +01:00
commit 555249a59e
2 changed files with 20 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
hw/cpu/core.c
View File

@ -66,10 +66,16 @@ static void core_prop_set_nr_threads(Object *obj, Visitor *v, const char *name,
static void cpu_core_instance_init(Object *obj)
{
MachineState *ms = MACHINE(qdev_get_machine());
CPUCore *core = CPU_CORE(obj);
core->nr_threads = ms->smp.threads;
/*
* Only '-device something-cpu-core,help' can get us there before
* the machine has been created. We don't care to set nr_threads
* in this case since it isn't used afterwards.
*/
if (current_machine) {
core->nr_threads = current_machine->smp.threads;
}
}
static void cpu_core_class_init(ObjectClass *oc, void *data)

12
target/i386/cpu.c
View File

@ -4179,6 +4179,18 @@ static X86CPUDefinition builtin_x86_defs[] = {
.xlevel = 0x8000001E,
.model_id = "AMD EPYC-Rome Processor",
.cache_info = &epyc_rome_cache_info,
.versions = (X86CPUVersionDefinition[]) {
{ .version = 1 },
{
.version = 2,
.props = (PropValue[]) {
{ "ibrs", "on" },
{ "amd-ssbd", "on" },
{ /* end of list */ }
}
},
{ /* end of list */ }
}
},
{
.name = "EPYC-Milan",