From: Andrew Cooper <andrew.cooper3@citrix.com>
To: Xen-devel <xen-devel@lists.xenproject.org>
Cc: "Tamas K Lengyel" <tamas.lengyel@intel.com>,
"Andrew Cooper" <andrew.cooper3@citrix.com>,
"Jan Beulich" <JBeulich@suse.com>,
"Roger Pau Monné" <roger.pau@citrix.com>, "Wei Liu" <wl@xen.org>,
"Jun Nakajima" <jun.nakajima@intel.com>,
"Kevin Tian" <kevin.tian@intel.com>,
"Michał Leszczyński" <michal.leszczynski@cert.pl>,
"Tamas K Lengyel" <tamas@tklengyel.com>
Subject: [PATCH v9 10/11] x86/vm_event: Carry the vmtrace buffer position in vm_event
Date: Mon, 1 Feb 2021 23:27:02 +0000 [thread overview]
Message-ID: <20210201232703.29275-11-andrew.cooper3@citrix.com> (raw)
In-Reply-To: <20210201232703.29275-1-andrew.cooper3@citrix.com>
From: Tamas K Lengyel <tamas.lengyel@intel.com>
Add vmtrace_pos field to x86 regs in vm_event. Initialized to ~0 if
vmtrace is not in use.
Signed-off-by: Tamas K Lengyel <tamas.lengyel@intel.com>
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
---
CC: Jan Beulich <JBeulich@suse.com>
CC: Roger Pau Monné <roger.pau@citrix.com>
CC: Wei Liu <wl@xen.org>
CC: Jun Nakajima <jun.nakajima@intel.com>
CC: Kevin Tian <kevin.tian@intel.com>
CC: Michał Leszczyński <michal.leszczynski@cert.pl>
CC: Tamas K Lengyel <tamas@tklengyel.com>
v8:
* Use 'vmtrace' consistently.
v7:
* New
---
xen/arch/x86/vm_event.c | 3 +++
xen/include/public/vm_event.h | 7 +++++++
2 files changed, 10 insertions(+)
diff --git a/xen/arch/x86/vm_event.c b/xen/arch/x86/vm_event.c
index 848d69c1b0..36272e9316 100644
--- a/xen/arch/x86/vm_event.c
+++ b/xen/arch/x86/vm_event.c
@@ -251,6 +251,9 @@ void vm_event_fill_regs(vm_event_request_t *req)
req->data.regs.x86.shadow_gs = ctxt.shadow_gs;
req->data.regs.x86.dr6 = ctxt.dr6;
+
+ if ( hvm_vmtrace_output_position(curr, &req->data.regs.x86.vmtrace_pos) != 1 )
+ req->data.regs.x86.vmtrace_pos = ~0;
#endif
}
diff --git a/xen/include/public/vm_event.h b/xen/include/public/vm_event.h
index 141ea024a3..147dc3ea73 100644
--- a/xen/include/public/vm_event.h
+++ b/xen/include/public/vm_event.h
@@ -223,6 +223,13 @@ struct vm_event_regs_x86 {
*/
uint64_t npt_base;
+ /*
+ * Current position in the vmtrace buffer, or ~0 if vmtrace is not active.
+ *
+ * For Intel Processor Trace, it is the upper half of MSR_RTIT_OUTPUT_MASK.
+ */
+ uint64_t vmtrace_pos;
+
uint32_t cs_base;
uint32_t ss_base;
uint32_t ds_base;
--
2.11.0
next prev parent reply other threads:[~2021-02-01 23:52 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-01 23:26 [PATCH v9 00/11] acquire_resource size and external IPT monitoring Andrew Cooper
2021-02-01 23:26 ` [PATCH v9 01/11] xen/memory: Fix mapping grant tables with XENMEM_acquire_resource Andrew Cooper
2021-02-04 21:23 ` Andrew Cooper
2021-02-01 23:26 ` [PATCH v9 02/11] xen/domain: Add vmtrace_size domain creation parameter Andrew Cooper
2021-02-02 9:04 ` Jan Beulich
2021-02-03 16:04 ` Andrew Cooper
2021-02-04 11:11 ` Jan Beulich
2021-02-01 23:26 ` [PATCH v9 03/11] tools/[lib]xl: Add vmtrace_buf_size parameter Andrew Cooper
2021-02-02 12:16 ` Ian Jackson
2021-02-02 12:17 ` Ian Jackson
2021-02-01 23:26 ` [PATCH v9 04/11] xen/memory: Add a vmtrace_buf resource type Andrew Cooper
2021-02-01 23:26 ` [PATCH v9 05/11] x86/vmx: Add Intel Processor Trace support Andrew Cooper
2021-02-01 23:26 ` [PATCH v9 06/11] xen/domctl: Add XEN_DOMCTL_vmtrace_op Andrew Cooper
2021-02-01 23:26 ` [PATCH v9 07/11] tools/libxc: Add xc_vmtrace_* functions Andrew Cooper
2021-02-01 23:27 ` [PATCH v9 08/11] tools/misc: Add xen-vmtrace tool Andrew Cooper
2021-02-01 23:27 ` [PATCH v9 09/11] xen/vmtrace: support for VM forks Andrew Cooper
2021-02-01 23:27 ` Andrew Cooper [this message]
2021-02-01 23:27 ` [PATCH v9 11/11] x86/vm_event: add response flag to reset vmtrace buffer Andrew Cooper
2021-02-02 12:20 ` [PATCH v9 00/11] acquire_resource size and external IPT monitoring Ian Jackson
2021-02-02 12:44 ` Andrew Cooper
2021-02-02 20:19 ` Andrew Cooper
2021-02-05 15:36 ` [PATCH v9 00/11] acquire_resource size and external IPT monitoring [and 1 more messages] Ian Jackson
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