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/*
* cpu_riscv64.c: CPU driver for riscv64 CPUs
*
* Copyright (C) 2023, Ventana Micro
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include "cpu.h"
#define VIR_FROM_THIS VIR_FROM_CPU
static const virArch archs[] = { VIR_ARCH_RISCV64 };
static virCPUCompareResult
virCPURiscv64Compare(virCPUDef *host G_GNUC_UNUSED,
virCPUDef *cpu G_GNUC_UNUSED,
bool failMessages G_GNUC_UNUSED)
{
/*
* For now QEMU will perform all runtime checks.
*/
return VIR_CPU_COMPARE_IDENTICAL;
}
static int
virCPURiscv64ValidateFeatures(virCPUDef *cpu G_GNUC_UNUSED)
{
return 0;
}
static int
virCPURiscv64Update(virCPUDef *guest,
const virCPUDef *host,
bool relative)
{
g_autoptr(virCPUDef) updated = virCPUDefCopyWithoutModel(guest);
if (!relative || guest->mode != VIR_CPU_MODE_HOST_MODEL)
return 0;
if (!host) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("unknown host CPU model"));
return -1;
}
updated->mode = VIR_CPU_MODE_CUSTOM;
virCPUDefCopyModel(updated, host, true);
virCPUDefStealModel(guest, updated, false);
guest->mode = VIR_CPU_MODE_CUSTOM;
guest->match = VIR_CPU_MATCH_EXACT;
return 0;
}
struct cpuArchDriver cpuDriverRiscv64 = {
.name = "riscv64",
.arch = archs,
.narch = G_N_ELEMENTS(archs),
.compare = virCPURiscv64Compare,
.decode = NULL,
.encode = NULL,
.baseline = NULL,
.update = virCPURiscv64Update,
.validateFeatures = virCPURiscv64ValidateFeatures,
};
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