This patch allows libvirt user to specify 'host-passthrough' cpu mode while using qemu/kvm backend on aarch64. It uses 'host' as a CPU model name instead of some other stub (correct CPU detection is not implemented yet) to allow libvirt user to specify 'host-model' cpu mode as well. Signed-off-by: Oleg Strikov <oleg.strikov@canonical.com> --- src/cpu/cpu_aarch64.c | 30 ++++++++++++++++++++++++++---- 1 file changed, 26 insertions(+), 4 deletions(-) diff --git a/src/cpu/cpu_aarch64.c b/src/cpu/cpu_aarch64.c index 3959deb..4afe9db 100644 --- a/src/cpu/cpu_aarch64.c +++ b/src/cpu/cpu_aarch64.c @@ -25,6 +25,7 @@ #include "viralloc.h" #include "cpu.h" +#include "virstring.h" #define VIR_FROM_THIS VIR_FROM_CPU @@ -44,16 +45,19 @@ AArch64NodeData(virArch arch) } static int -AArch64Decode(virCPUDefPtr cpu ATTRIBUTE_UNUSED, +AArch64Decode(virCPUDefPtr cpu, const virCPUData *data ATTRIBUTE_UNUSED, const char **models ATTRIBUTE_UNUSED, unsigned int nmodels ATTRIBUTE_UNUSED, const char *preferred ATTRIBUTE_UNUSED, unsigned int flags) { - virCheckFlags(VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES, -1); + if (cpu->model == NULL && + VIR_STRDUP(cpu->model, "host") < 0) + return -1; + return 0; } @@ -63,6 +67,24 @@ AArch64DataFree(virCPUDataPtr data) VIR_FREE(data); } +static int +AArch64Update(virCPUDefPtr guest, + const virCPUDef *host) +{ + guest->match = VIR_CPU_MATCH_EXACT; + virCPUDefFreeModel(guest); + return virCPUDefCopyModel(guest, host, true); +} + +static virCPUCompareResult +AArch64GuestData(virCPUDefPtr host ATTRIBUTE_UNUSED, + virCPUDefPtr guest ATTRIBUTE_UNUSED, + virCPUDataPtr *data ATTRIBUTE_UNUSED, + char **message ATTRIBUTE_UNUSED) +{ + return VIR_CPU_COMPARE_IDENTICAL; +} + struct cpuArchDriver cpuDriverAARCH64 = { .name = "aarch64", .arch = archs, @@ -72,8 +94,8 @@ struct cpuArchDriver cpuDriverAARCH64 = { .encode = NULL, .free = AArch64DataFree, .nodeData = AArch64NodeData, - .guestData = NULL, + .guestData = AArch64GuestData, .baseline = NULL, - .update = NULL, + .update = AArch64Update, .hasFeature = NULL, }; -- 1.7.9.5