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| author | Zeng Chi <zengchi@kylinos.cn> | 2026-09-21 18:24:42 +0800 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2026-09-22 08:36:16 -0700 |
| commit | 119e9db233ad0f4cbd4cfb9f9385a7bca378b37d (patch) | |
| tree | 660d50d4139cb750fbde1ae3432452c20726c99d /arch/mips/kvm/Kconfig | |
| download | linux-stable-119e9db233ad0f4cbd4cfb9f9385a7bca378b37d.tar.gz linux-stable-119e9db233ad0f4cbd4cfb9f9385a7bca378b37d.zip | |
KVM: Don't pre-reserve xarray entries when storing empty/NULL attributesgrafted
Skip the xarray reservation loop when clearing all memory attributes, as
storing NULL only erases the entry and never needs to allocate, so no
reservation (and no cleanup of a failed one) is required in that case.
Suggested-by: Sean Christopherson <seanjc@google.com>
Cc: David Ballesteros <davimaba.v@proton.me>
Signed-off-by: Zeng Chi <zengchi@kylinos.cn>
Link: https://patch.msgid.link/20260921102442.1232375-1-zeng_chi911@163.com
[sean: split to separate patch]
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'arch/mips/kvm/Kconfig')
| -rw-r--r-- | arch/mips/kvm/Kconfig | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/mips/kvm/Kconfig b/arch/mips/kvm/Kconfig new file mode 100644 index 000000000..b1b9a1d67 --- /dev/null +++ b/arch/mips/kvm/Kconfig @@ -0,0 +1,41 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# KVM configuration +# +source "virt/kvm/Kconfig" + +menuconfig VIRTUALIZATION + bool "Virtualization" + help + Say Y here to get to see options for using your Linux host to run + other operating systems inside virtual machines (guests). + This option alone does not add any kernel code. + + If you say N, all options in this submenu will be skipped and disabled. + +if VIRTUALIZATION + +config KVM + tristate "Kernel-based Virtual Machine (KVM) support" + depends on CPU_SUPPORTS_VZ + depends on MIPS_FP_SUPPORT + select EXPORT_UASM + select KVM_COMMON + select KVM_GENERIC_DIRTYLOG_READ_PROTECT + select KVM_MMIO + select KVM_GENERIC_HARDWARE_ENABLING + select HAVE_KVM_READONLY_MEM + help + Support for hosting Guest kernels. + +config KVM_MIPS_DEBUG_COP0_COUNTERS + bool "Maintain counters for COP0 accesses" + depends on KVM + help + Maintain statistics for Guest COP0 accesses. + A histogram of COP0 accesses is printed when the VM is + shutdown. + + If unsure, say N. + +endif # VIRTUALIZATION |