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| author | Jiaxun Yang <jiaxun.yang@flygoat.com> | 2020-07-10 14:30:17 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-07-10 03:15:38 -0400 |
| commit | 01edc5e76ecfecf9a79eec2658f6146ef47bc816 (patch) | |
| tree | 901e83add6f5df635abd85c4452d380d2361f385 /arch/mips | |
| parent | 380f3a8b6360442508321026f9dc7f8507a7f526 (diff) | |
| download | linux-01edc5e76ecfecf9a79eec2658f6146ef47bc816.tar.gz linux-01edc5e76ecfecf9a79eec2658f6146ef47bc816.tar.bz2 linux-01edc5e76ecfecf9a79eec2658f6146ef47bc816.zip | |
MIPS: KVM: Limit Trap-and-Emulate to MIPS32R2 only
After tons of fixes to get Trap-and-Emulate build on Loongson64,
I've got panic on host machine when trying to run a VM.
I found that it can never work on 64bit systems. Revewing the
code, it looks like R6 can't supportrd by TE as well.
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Message-Id: <20200710063047.154611-3-jiaxun.yang@flygoat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/Kconfig | 1 | ||||
| -rw-r--r-- | arch/mips/kvm/Kconfig | 3 |
2 files changed, 3 insertions, 1 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 6fee1a133e9d..2efc34ed94eb 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -2202,6 +2202,7 @@ endchoice config KVM_GUEST bool "KVM Guest Kernel" + depends on CPU_MIPS32_R2 depends on BROKEN_ON_SMP help Select this option if building a guest kernel for KVM (Trap & Emulate) diff --git a/arch/mips/kvm/Kconfig b/arch/mips/kvm/Kconfig index 2bf02d849a3a..032b3fca6cbb 100644 --- a/arch/mips/kvm/Kconfig +++ b/arch/mips/kvm/Kconfig @@ -37,10 +37,11 @@ choice config KVM_MIPS_TE bool "Trap & Emulate" + depends on CPU_MIPS32_R2 help Use trap and emulate to virtualize 32-bit guests in user mode. This does not require any special hardware Virtualization support beyond - standard MIPS32/64 r2 or later, but it does require the guest kernel + standard MIPS32 r2 or later, but it does require the guest kernel to be configured with CONFIG_KVM_GUEST=y so that it resides in the user address segment. |