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Date: Mon, 8 Jan 2024 07:47:38 -0500 From: Paolo Bonzini <pbonzini@...hat.com> To: linux-kernel@...r.kernel.org, kvm@...r.kernel.org Cc: ajones@...tanamicro.com, Thomas Bogendoerfer <tsbogend@...ha.franken.de> Subject: [PATCH v2 3/5] MIPS: introduce Kconfig for MIPS VZ Since MIPS/KVM only supports hardware virtualization using MIPS VZ, do not enable KVM blindly. Use a new Kconfig symbol CPU_SUPPORTS_VZ and do not enable it for R2 processors. Cc: Thomas Bogendoerfer <tsbogend@...ha.franken.de> Signed-off-by: Paolo Bonzini <pbonzini@...hat.com> --- arch/mips/Kconfig | 9 +++++++++ arch/mips/kvm/Kconfig | 2 +- 2 files changed, 10 insertions(+), 1 deletion(-) diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 797ae590ebdb..3eb3239013d9 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -1250,6 +1250,7 @@ config CPU_LOONGSON64 select CPU_SUPPORTS_HIGHMEM select CPU_SUPPORTS_HUGEPAGES select CPU_SUPPORTS_MSA + select CPU_SUPPORTS_VZ select CPU_DIEI_BROKEN if !LOONGSON3_ENHANCEMENT select CPU_MIPSR2_IRQ_VI select DMA_NONCOHERENT @@ -1389,6 +1390,7 @@ config CPU_MIPS32_R5 select CPU_SUPPORTS_32BIT_KERNEL select CPU_SUPPORTS_HIGHMEM select CPU_SUPPORTS_MSA + select CPU_SUPPORTS_VZ select HAVE_KVM select MIPS_O32_FP64_SUPPORT help @@ -1405,6 +1407,7 @@ config CPU_MIPS32_R6 select CPU_SUPPORTS_32BIT_KERNEL select CPU_SUPPORTS_HIGHMEM select CPU_SUPPORTS_MSA + select CPU_SUPPORTS_VZ select HAVE_KVM select MIPS_O32_FP64_SUPPORT help @@ -1459,6 +1462,7 @@ config CPU_MIPS64_R5 select CPU_SUPPORTS_HUGEPAGES select CPU_SUPPORTS_MSA select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32 + select CPU_SUPPORTS_VZ select HAVE_KVM help Choose this option to build a kernel for release 5 or later of the @@ -1477,6 +1481,7 @@ config CPU_MIPS64_R6 select CPU_SUPPORTS_HUGEPAGES select CPU_SUPPORTS_MSA select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32 + select CPU_SUPPORTS_VZ select HAVE_KVM help Choose this option to build a kernel for release 6 or later of the @@ -1492,6 +1497,7 @@ config CPU_P5600 select CPU_SUPPORTS_HIGHMEM select CPU_SUPPORTS_MSA select CPU_SUPPORTS_CPUFREQ + select CPU_SUPPORTS_VZ select CPU_MIPSR2_IRQ_VI select CPU_MIPSR2_IRQ_EI select HAVE_KVM @@ -1614,6 +1620,7 @@ config CPU_CAVIUM_OCTEON select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN select MIPS_L1_CACHE_SHIFT_7 + select CPU_SUPPORTS_VZ select HAVE_KVM help The Cavium Octeon processor is a highly integrated chip containing @@ -1969,6 +1976,8 @@ config CPU_SUPPORTS_ADDRWINCFG config CPU_SUPPORTS_HUGEPAGES bool depends on !(32BIT && (PHYS_ADDR_T_64BIT || EVA)) +config CPU_SUPPORTS_VZ + bool config MIPS_PGD_C0_CONTEXT bool depends on 64BIT diff --git a/arch/mips/kvm/Kconfig b/arch/mips/kvm/Kconfig index 18e7a17d5115..8916b3ed0f90 100644 --- a/arch/mips/kvm/Kconfig +++ b/arch/mips/kvm/Kconfig @@ -17,7 +17,7 @@ if VIRTUALIZATION config KVM tristate "Kernel-based Virtual Machine (KVM) support" - depends on HAVE_KVM + depends on CPU_SUPPORTS_VZ depends on MIPS_FP_SUPPORT select EXPORT_UASM select KVM_COMMON -- 2.39.1
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