@@ -138,6 +138,64 @@ Output of information in machine-parseable JSON format
Status: Supported, Security support external
+## Debugging, analysis, and crash post-mortem
+
+### Host serial console
+
+ Status, NS16550: Supported
+ Status, EHCI: Supported
+ Status, Cadence UART (ARM): Supported
+ Status, PL011 UART (ARM): Supported
+ Status, Exynos 4210 UART (ARM): Supported
+ Status, OMAP UART (ARM): Supported
+ Status, SCI(F) UART: Supported
+
+XXX Should NS16550 and EHCI be limited to x86? Unlike the ARM
+entries, they don't depend on x86 being configured
+
+### Hypervisor 'debug keys'
+
+ Status: Supported, not security supported
+
+These are functions triggered either from the host serial console,
+or via the xl 'debug-keys' command,
+which cause Xen to dump various hypervisor state to the console.
+
+### Hypervisor synchronous console output (sync_console)
+
+ Status: Supported, not security supported
+
+Xen command-line flag to force synchronous console output.
+Useful for debugging, but not suitable for production environments
+due to incurred overhead.
+
+### gdbsx
+
+ Status, x86: Supported, not security supported
+
+Debugger to debug ELF guests
+
+### Soft-reset for PV guests
+
+ Status: Supported
+
+Soft-reset allows a new kernel to start 'from scratch' with a fresh VM state,
+but with all the memory from the previous state of the VM intact.
+This is primarily designed to allow "crash kernels",
+which can do core dumps of memory to help with debugging in the event of a crash.
+
+### xentrace
+
+ Status, x86: Supported
+
+Tool to capture Xen trace buffer data
+
+### gcov
+
+ Status: Supported, Not security supported
+
+Export hypervisor coverage data suitable for analysis by gcov or lcov.
+
## Memory Management
### Dynamic memory control
Signed-off-by: George Dunlap <george.dunlap@citrix.com> --- Changes since v2: - gdbsx -> not security suported - Added host serial, host debug keys, and host sync_console entries CC: Ian Jackson <ian.jackson@citrix.com> CC: Wei Liu <wei.liu2@citrix.com> CC: Andrew Cooper <andrew.cooper3@citrix.com> CC: Jan Beulich <jbeulich@suse.com> CC: Stefano Stabellini <sstabellini@kernel.org> CC: Konrad Wilk <konrad.wilk@oracle.com> CC: Tim Deegan <tim@xen.org> --- SUPPORT.md | 58 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+)