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authorAnup Patel <apatel@ventanamicro.com>2022-07-29 14:45:00 +0300
committerAnup Patel <anup@brainfault.org>2022-07-29 14:45:00 +0300
commit4ab0e470c06dc741f6583578da44961669331b78 (patch)
treeaade2851a11bbebcd640cf6da9745c7b3c47d9b5 /virt
parent8a061562e2f2b32bfb5bff5bf3afc64e37d95a27 (diff)
downloadlinux-4ab0e470c06dc741f6583578da44961669331b78.tar.xz
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.c4
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;