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be1bd4c539
Add support for tagging and untagging guest physical address, e.g. to allow x86's SEV and TDX guests to embed shared vs. private information in the GPA. SEV (encryption, a.k.a. C-bit) and TDX (shared, a.k.a. S-bit) steal bits from the guest's physical address space that is consumed by the CPU metadata, i.e. effectively aliases the "real" GPA. Implement generic "tagging" so that the shared vs. private metadata can be managed by x86 without bleeding too many details into common code. Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Sean Christopherson <seanjc@google.com> Cc: Vishal Annapurve <vannapurve@google.com> Cc: Ackerly Tng <ackerleytng@google.com> cc: Andrew Jones <andrew.jones@linux.dev> Cc: Tom Lendacky <thomas.lendacky@amd.com> Cc: Michael Roth <michael.roth@amd.com> Tested-by: Carlos Bilbao <carlos.bilbao@amd.com> Originally-by: Michael Roth <michael.roth@amd.com> Signed-off-by: Peter Gonda <pgonda@google.com> Link: https://lore.kernel.org/r/20240223004258.3104051-8-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com> |
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| .. | ||
| aarch64 | ||
| riscv | ||
| s390x | ||
| x86_64 | ||
| assert.c | ||
| elf.c | ||
| guest_modes.c | ||
| guest_sprintf.c | ||
| io.c | ||
| kvm_util.c | ||
| memstress.c | ||
| rbtree.c | ||
| sparsebit.c | ||
| string_override.c | ||
| test_util.c | ||
| ucall_common.c | ||
| userfaultfd_util.c | ||