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Re: [PATCH v2 1/3] monitor: Add HMP and QMP interfaces
From: |
Daniel P . Berrangé |
Subject: |
Re: [PATCH v2 1/3] monitor: Add HMP and QMP interfaces |
Date: |
Mon, 13 Sep 2021 10:35:42 +0100 |
User-agent: |
Mutt/2.0.7 (2021-05-04) |
On Fri, Sep 10, 2021 at 02:46:00PM +0100, Daniel P. Berrangé wrote:
> On Fri, Sep 10, 2021 at 06:22:56PM +0800, Yang Zhong wrote:
> > The QMP and HMP interfaces can be used by monitor or QMP tools to retrieve
> > the SGX information from VM side when SGX is enabled on Intel platform.
> >
> > Signed-off-by: Yang Zhong <yang.zhong@intel.com>
> > ---
> > hmp-commands-info.hx | 15 +++++++++++++
> > hw/i386/sgx.c | 29 ++++++++++++++++++++++++
> > include/hw/i386/sgx.h | 11 +++++++++
> > include/monitor/hmp-target.h | 1 +
> > qapi/misc-target.json | 43 ++++++++++++++++++++++++++++++++++++
> > target/i386/monitor.c | 36 ++++++++++++++++++++++++++++++
> > tests/qtest/qmp-cmd-test.c | 1 +
> > 7 files changed, 136 insertions(+)
> > create mode 100644 include/hw/i386/sgx.h
>
> > diff --git a/hw/i386/sgx.c b/hw/i386/sgx.c
> > index 02fa6487c3..8a32d62d7e 100644
> > --- a/hw/i386/sgx.c
> > +++ b/hw/i386/sgx.c
> > @@ -17,6 +17,35 @@
> > #include "monitor/qdev.h"
> > #include "qapi/error.h"
> > #include "exec/address-spaces.h"
> > +#include "hw/i386/sgx.h"
> > +
> > +SGXInfo *sgx_get_info(void)
>
> I'd suggest this should have an 'Error **errp'
>
> > +{
> > + SGXInfo *info = NULL;
> > + X86MachineState *x86ms;
> > + PCMachineState *pcms =
> > + (PCMachineState *)object_dynamic_cast(qdev_get_machine(),
> > + TYPE_PC_MACHINE);
> > + if (!pcms) {
>
> error_setg(errp, "SGX is only available for x86 PC machines");
>
> > + return NULL;
> > + }
> > +
> > + x86ms = X86_MACHINE(pcms);
> > + if (!x86ms->sgx_epc_list) {
>
> error_setg(errp "SGX is not enabled on this machine");
>
> > + return NULL;
> > + }
> > +
> > + SGXEPCState *sgx_epc = &pcms->sgx_epc;
> > + info = g_new0(SGXInfo, 1);
> > +
> > + info->sgx = true;
> > + info->sgx1 = true;
> > + info->sgx2 = true;
> > + info->flc = true;
> > + info->section_size = sgx_epc->size;
> > +
> > + return info;
> > +}
>
>
>
> > diff --git a/target/i386/monitor.c b/target/i386/monitor.c
> > index 119211f0b0..0f1b48b4f8 100644
> > --- a/target/i386/monitor.c
> > +++ b/target/i386/monitor.c
> > @@ -35,6 +35,7 @@
> > #include "qapi/qapi-commands-misc-target.h"
> > #include "qapi/qapi-commands-misc.h"
> > #include "hw/i386/pc.h"
> > +#include "hw/i386/sgx.h"
> >
> > /* Perform linear address sign extension */
> > static hwaddr addr_canonical(CPUArchState *env, hwaddr addr)
> > @@ -763,3 +764,38 @@ qmp_query_sev_attestation_report(const char *mnonce,
> > Error **errp)
> > {
> > return sev_get_attestation_report(mnonce, errp);
> > }
> > +
> > +SGXInfo *qmp_query_sgx(Error **errp)
> > +{
> > + SGXInfo *info;
> > +
> > + info = sgx_get_info();
>
> Pass errp into this
>
> > + if (!info) {
> > + error_setg(errp, "SGX features are not available");
>
> And get rid of this.
>
> > + return NULL;
> > + }
> > +
> > + return info;
> > +}
> > +
> > +void hmp_info_sgx(Monitor *mon, const QDict *qdict)
> > +{
>
> g_autoptr(Error) err = NULL
I was mistaken here - Error shouldn't use g_autoptr, just
Error err = NULL;
>
> > + SGXInfo *info = qmp_query_sgx(NULL);
>
> Pass in &err not NULL;
>
> Also declare it with 'g_autoptr(SGXInfo) info = ...'
>
> And then
>
> if (err) {
> monitor_printf(mon, "%s\n", error_get_pretty(err);
Then use the simpler:
error_report_err(err);
which prints + frees 'err'
> return;
> }
>
Regards,
Daniel
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- [PATCH v2 0/3] The HMP/QMP interfaces in Qemu SGX, Yang Zhong, 2021/09/10
- [PATCH v2 3/3] pc: Cleanup the SGX definitions, Yang Zhong, 2021/09/10
- [PATCH v2 1/3] monitor: Add HMP and QMP interfaces, Yang Zhong, 2021/09/10
- Re: [PATCH v2 1/3] monitor: Add HMP and QMP interfaces, Daniel P . Berrangé, 2021/09/10
- Re: [PATCH v2 1/3] monitor: Add HMP and QMP interfaces,
Daniel P . Berrangé <=
- Re: [PATCH v2 1/3] monitor: Add HMP and QMP interfaces, Yang Zhong, 2021/09/13
- Re: [PATCH v2 1/3] monitor: Add HMP and QMP interfaces, Paolo Bonzini, 2021/09/13
- Re: [PATCH v2 1/3] monitor: Add HMP and QMP interfaces, Daniel P . Berrangé, 2021/09/13
- Re: [PATCH v2 1/3] monitor: Add HMP and QMP interfaces, Yang Zhong, 2021/09/13
- Re: [PATCH v2 1/3] monitor: Add HMP and QMP interfaces, Daniel P . Berrangé, 2021/09/13
- Re: [PATCH v2 1/3] monitor: Add HMP and QMP interfaces, Yang Zhong, 2021/09/16
[PATCH v2 2/3] qmp: Add the qmp_query_sgx_capabilities(), Yang Zhong, 2021/09/10
Re: [PATCH v2 0/3] The HMP/QMP interfaces in Qemu SGX, Paolo Bonzini, 2021/09/10