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ANDROID: KVM: arm64: Explicitely map kvm_vgic_global_state at EL2

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The pkvm hypervisor may need to read the kvm_vgic_global_state variable
at EL2. Make sure to explicitely map it in the its stage-1 page-table
rather than relying on mapping all of .rodata.

Signed-off-by: Quentin Perret <qperret@google.com>
Bug: 225169428
Change-Id: I72d1eba78fb6b7593d236539cd81269480856fdf
This commit is contained in:
Quentin Perret
2022-03-29 13:29:28 +01:00
parent 7670745758
commit fa96b5be92
1 changed files with 4 additions and 0 deletions
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4
arch/arm64/kvm/hyp/nvhe/setup.c
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@@ -150,6 +150,10 @@ static int recreate_hyp_mappings(phys_addr_t phys, unsigned long size,
if (ret)
return ret;
ret = pkvm_create_mappings(&kvm_vgic_global_state, &kvm_vgic_global_state + 1, prot);
if (ret)
return ret;
start = hyp_phys_to_virt(pvmfw_base);
end = start + pvmfw_size;
prot = pkvm_mkstate(PAGE_HYP, PKVM_PAGE_OWNED);