Yosry Ahmed d2e50389ab KVM: selftests: Make sure vm->vpages_mapped is always up-to-date ...

Call paths leading to __virt_pg_map() are currently:
(a) virt_pg_map() -> virt_arch_pg_map() -> __virt_pg_map()
(b) virt_map_level() -> __virt_pg_map()

For (a), calls to virt_pg_map() from kvm_util.c make sure they update
vm->vpages_mapped, but other callers do not. Move the sparsebit_set()
call into virt_pg_map() to make sure all callers are captured.

For (b), call sparsebit_set_num() from virt_map_level().

It's tempting to have a single the call inside __virt_pg_map(), however:
- The call path in (a) is not x86-specific, while (b) is. Moving the
  call into __virt_pg_map() would require doing something similar for
  other archs implementing virt_pg_map().

- Future changes will reusue __virt_pg_map() for nested PTEs, which should
  not update vm->vpages_mapped, i.e. a triple underscore version that does
  not update vm->vpages_mapped would need to be provided.

Signed-off-by: Yosry Ahmed <yosry.ahmed@linux.dev>
Link: https://patch.msgid.link/20251021074736.1324328-12-yosry.ahmed@linux.dev
Signed-off-by: Sean Christopherson <seanjc@google.com>

2025-11-21 10:17:05 -08:00

..

apic.c

…

handlers.S

…

hyperv.c

…

memstress.c

KVM: selftests: Remove the unused argument to prepare_eptp()

2025-11-20 16:19:57 -08:00

pmu.c

KVM: selftests: Handle Intel Atom errata that leads to PMU event overcount

2025-09-23 08:38:59 -07:00

processor.c

KVM: selftests: Make sure vm->vpages_mapped is always up-to-date

2025-11-21 10:17:05 -08:00

sev.c

KVM: selftests: Add library support for interacting with SNP

2025-05-02 12:32:33 -07:00

svm.c

…

ucall.c

…

vmx.c

KVM: selftests: Change VM_MODE_PXXV48_4K to VM_MODE_PXXVYY_4K

2025-11-20 16:19:59 -08:00