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| author | Anup Patel <apatel@ventanamicro.com> | 2022-07-29 13:45:00 +0200 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2022-07-29 13:45:00 +0200 |
| commit | 4ab0e470c06dc741f6583578da44961669331b78 (patch) | |
| tree | aade2851a11bbebcd640cf6da9745c7b3c47d9b5 /virt | |
| parent | RISC-V: KVM: Add extensible CSR emulation framework (diff) | |
| download | linux-4ab0e470c06dc741f6583578da44961669331b78.tar.xz linux-4ab0e470c06dc741f6583578da44961669331b78.zip | |
KVM: Add gfp_custom flag in struct kvm_mmu_memory_cache
The kvm_mmu_topup_memory_cache() always uses GFP_KERNEL_ACCOUNT for
memory allocation which prevents it's use in atomic context. To address
this limitation of kvm_mmu_topup_memory_cache(), we add gfp_custom flag
in struct kvm_mmu_memory_cache. When the gfp_custom flag is set to some
GFP_xyz flags, the kvm_mmu_topup_memory_cache() will use that instead of
GFP_KERNEL_ACCOUNT.
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Signed-off-by: Anup Patel <anup@brainfault.org>
Diffstat (limited to 'virt')
| -rw-r--r-- | virt/kvm/kvm_main.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index a49df8988cd6..e3a6f7647474 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -386,7 +386,9 @@ int kvm_mmu_topup_memory_cache(struct kvm_mmu_memory_cache *mc, int min) if (mc->nobjs >= min) return 0; while (mc->nobjs < ARRAY_SIZE(mc->objects)) { - obj = mmu_memory_cache_alloc_obj(mc, GFP_KERNEL_ACCOUNT); + obj = mmu_memory_cache_alloc_obj(mc, (mc->gfp_custom) ? + mc->gfp_custom : + GFP_KERNEL_ACCOUNT); if (!obj) return mc->nobjs >= min ? 0 : -ENOMEM; mc->objects[mc->nobjs++] = obj; |