From a66bd91f030827742778a9e0da19fe55716b4a60 Mon Sep 17 00:00:00 2001 From: Yang Zhong Date: Thu, 20 Jan 2022 17:31:04 -0500 Subject: [PATCH] qapi: Cleanup SGX related comments and restore @section-size MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The SGX NUMA patches were merged into Qemu 7.0 release, we need clarify detailed version history information and also change some related comments, which make SGX related comments clearer. The QMP command schema promises backwards compatibility as standard. We temporarily restore "@section-size", which can avoid incompatible API breakage. The "@section-size" will be deprecated in 7.2 version. Suggested-by: Daniel P. Berrangé Signed-off-by: Yang Zhong Reviewed-by: Daniel P. Berrangé Reviewed-by: Philippe Mathieu-Daudé Message-Id: <20220120223104.437161-1-yang.zhong@intel.com> Signed-off-by: Paolo Bonzini --- docs/about/deprecated.rst | 13 +++++++++++++ hw/i386/sgx.c | 11 +++++++++-- qapi/machine.json | 4 ++-- qapi/misc-target.json | 22 +++++++++++++++++----- 4 files changed, 41 insertions(+), 9 deletions(-) diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst index e21e07478f..47a594a3b6 100644 --- a/docs/about/deprecated.rst +++ b/docs/about/deprecated.rst @@ -264,6 +264,19 @@ accepted incorrect commands will return an error. Users should make sure that all arguments passed to ``device_add`` are consistent with the documented property types. +``query-sgx`` return value member ``section-size`` (since 7.0) +'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' + +Member ``section-size`` in return value elements with meta-type ``uint64`` is +deprecated. Use ``sections`` instead. + + +``query-sgx-capabilities`` return value member ``section-size`` (since 7.0) +''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' + +Member ``section-size`` in return value elements with meta-type ``uint64`` is +deprecated. Use ``sections`` instead. + System accelerators ------------------- diff --git a/hw/i386/sgx.c b/hw/i386/sgx.c index 5de5dd0893..a2b318dd93 100644 --- a/hw/i386/sgx.c +++ b/hw/i386/sgx.c @@ -83,7 +83,7 @@ static uint64_t sgx_calc_section_metric(uint64_t low, uint64_t high) ((high & MAKE_64BIT_MASK(0, 20)) << 32); } -static SGXEPCSectionList *sgx_calc_host_epc_sections(void) +static SGXEPCSectionList *sgx_calc_host_epc_sections(uint64_t *size) { SGXEPCSectionList *head = NULL, **tail = &head; SGXEPCSection *section; @@ -106,6 +106,7 @@ static SGXEPCSectionList *sgx_calc_host_epc_sections(void) section = g_new0(SGXEPCSection, 1); section->node = j++; section->size = sgx_calc_section_metric(ecx, edx); + *size += section->size; QAPI_LIST_APPEND(tail, section); } @@ -156,6 +157,7 @@ SGXInfo *qmp_query_sgx_capabilities(Error **errp) { SGXInfo *info = NULL; uint32_t eax, ebx, ecx, edx; + uint64_t size = 0; int fd = qemu_open_old("/dev/sgx_vepc", O_RDWR); if (fd < 0) { @@ -173,7 +175,8 @@ SGXInfo *qmp_query_sgx_capabilities(Error **errp) info->sgx1 = eax & (1U << 0) ? true : false; info->sgx2 = eax & (1U << 1) ? true : false; - info->sections = sgx_calc_host_epc_sections(); + info->sections = sgx_calc_host_epc_sections(&size); + info->section_size = size; close(fd); @@ -220,12 +223,14 @@ SGXInfo *qmp_query_sgx(Error **errp) 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; info->sections = sgx_get_epc_sections_list(); return info; @@ -249,6 +254,8 @@ void hmp_info_sgx(Monitor *mon, const QDict *qdict) info->sgx2 ? "enabled" : "disabled"); monitor_printf(mon, "FLC support: %s\n", info->flc ? "enabled" : "disabled"); + monitor_printf(mon, "size: %" PRIu64 "\n", + info->section_size); section_list = info->sections; for (section = section_list; section; section = section->next) { diff --git a/qapi/machine.json b/qapi/machine.json index c87c81b803..42fc68403d 100644 --- a/qapi/machine.json +++ b/qapi/machine.json @@ -1207,7 +1207,7 @@ # # @memdev: memory backend linked with device # -# @node: the numa node +# @node: the numa node (Since: 7.0) # # Since: 6.2 ## @@ -1288,7 +1288,7 @@ # # @memdev: memory backend linked with device # -# @node: the numa node +# @node: the numa node (Since: 7.0) # # Since: 6.2 ## diff --git a/qapi/misc-target.json b/qapi/misc-target.json index 1022aa0184..4bc45d2474 100644 --- a/qapi/misc-target.json +++ b/qapi/misc-target.json @@ -344,9 +344,9 @@ # # @node: the numa node # -# @size: the size of epc section +# @size: the size of EPC section # -# Since: 6.2 +# Since: 7.0 ## { 'struct': 'SGXEPCSection', 'data': { 'node': 'int', @@ -365,7 +365,13 @@ # # @flc: true if FLC is supported # -# @sections: The EPC sections info for guest +# @section-size: The EPC section size for guest +# Redundant with @sections. Just for backward compatibility. +# +# @sections: The EPC sections info for guest (Since: 7.0) +# +# Features: +# @deprecated: Member @section-size is deprecated. Use @sections instead. # # Since: 6.2 ## @@ -374,6 +380,8 @@ 'sgx1': 'bool', 'sgx2': 'bool', 'flc': 'bool', + 'section-size': { 'type': 'uint64', + 'features': [ 'deprecated' ] }, 'sections': ['SGXEPCSection']}, 'if': 'TARGET_I386' } @@ -390,7 +398,9 @@ # # -> { "execute": "query-sgx" } # <- { "return": { "sgx": true, "sgx1" : true, "sgx2" : true, -# "flc": true, "section-size" : 0 } } +# "flc": true, "section-size" : 96468992, +# "sections": [{"node": 0, "size": 67108864}, +# {"node": 1, "size": 29360128}]} } # ## { 'command': 'query-sgx', 'returns': 'SGXInfo', 'if': 'TARGET_I386' } @@ -408,7 +418,9 @@ # # -> { "execute": "query-sgx-capabilities" } # <- { "return": { "sgx": true, "sgx1" : true, "sgx2" : true, -# "flc": true, "section-size" : 0 } } +# "flc": true, "section-size" : 96468992, +# "section" : [{"node": 0, "size": 67108864}, +# {"node": 1, "size": 29360128}]} } # ## { 'command': 'query-sgx-capabilities', 'returns': 'SGXInfo', 'if': 'TARGET_I386' }