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Remove pagetable_l0 parameter in virt_to_phys. #719

Open
jounathaen opened this issue Jun 24, 2024 · 0 comments · May be fixed by #725
Open

Remove pagetable_l0 parameter in virt_to_phys. #719

jounathaen opened this issue Jun 24, 2024 · 0 comments · May be fixed by #725
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enhancement New feature or request good first issue Good for newcomers

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@jounathaen
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Currently, virt_to_phys requires the location of the root-pagetable as a parameter. This value can actually be retrieved from the CPUs registers instead, making the interface easier and more flexible.

uhyve/src/arch/x86_64/mod.rs

Lines 196 to 200 in e6ffffa

pub fn virt_to_phys(
addr: GuestVirtAddr,
mem: &MmapMemory,
pagetable_l0: GuestPhysAddr,
) -> Result<GuestPhysAddr, PagetableError> {

@jounathaen jounathaen mentioned this issue Jun 24, 2024
Open
@jounathaen jounathaen added enhancement New feature or request good first issue Good for newcomers labels Jun 24, 2024
@n0toose n0toose mentioned this issue Jun 26, 2024
Closed
n0toose added a commit to n0toose/uhyve that referenced this issue Jul 6, 2024
@n0toose @jounathaen
ASLR: Lay down the foundations
855fd91 
- Move x86_64-related paging code to src/arch/x86_64/paging
- Tests: x86_64-related paging tests should use a guest_address that is
  not 0
- Tests: Move them in separate files, use appropriate 'use' directives
- Fix kernel memory loading
- Add guest_address getter in UhyveVm
- Change names of constants to clarify their purpose
- Use u64 for arch::RAM_START instead of GuestVirtAddr
- Remove pagetable_l0 from virt_to_phys function

We currently rely on guest_address in MmapMemory to calculate the
offsets during the initialization of the VM and when converting
virtual addresses to physical addresses. The latter case is intended
to be temporary - we should read the value from the CR3 register at
a later point.

Given this change, the arch::RAM_START's type was changed from
GuestVirtAddr to u64.

Although this current revision does work with relocatable binaries, it
is not making use of this functionality _just_ yet.

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
n0toose added a commit to n0toose/uhyve that referenced this issue Jul 6, 2024
@n0toose @jounathaen
ASLR: Lay down the foundations
fb8fb6e 
- Move x86_64-related paging code to src/arch/x86_64/paging
- Tests: x86_64-related paging tests should use a guest_address that is
  not 0
- Tests: Move them in separate files, use appropriate 'use' directives
- Fix kernel memory loading
- Add guest_address getter in UhyveVm
- Change names of constants to clarify their purpose
- Use u64 for arch::RAM_START instead of GuestVirtAddr
- Remove pagetable_l0 from virt_to_phys function

We currently rely on guest_address in MmapMemory to calculate the
offsets during the initialization of the VM and when converting
virtual addresses to physical addresses. The latter case is intended
to be temporary - we should read the value from the CR3 register at
a later point.

Given this change, the arch::RAM_START's type was changed from
GuestVirtAddr to u64.

Although this current revision does work with relocatable binaries, it
is not making use of this functionality _just_ yet.

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
n0toose added a commit to n0toose/uhyve that referenced this issue Jul 6, 2024
@n0toose @jounathaen
ASLR: Lay down the foundations
dd72550 
- Move x86_64-related paging code to src/arch/x86_64/paging
- Tests: x86_64-related paging tests should use a guest_address that is
  not 0
- Tests: Move them in separate files, use appropriate 'use' directives
- Fix kernel memory loading
- Add guest_address getter in UhyveVm
- Change names of constants to clarify their purpose
- Use u64 for arch::RAM_START instead of GuestVirtAddr
- Remove pagetable_l0 from virt_to_phys function
- Various `cargo fmt`-related changes

We currently rely on guest_address in MmapMemory to calculate the
offsets during the initialization of the VM and when converting
virtual addresses to physical addresses. The latter case is intended
to be temporary - we should read the value from the CR3 register at
a later point.

Given this change, the arch::RAM_START's type was changed from
GuestVirtAddr to u64.

Although this current revision does work with relocatable binaries, it
is not making use of this functionality _just_ yet.

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
n0toose added a commit to n0toose/uhyve that referenced this issue Jul 6, 2024
@n0toose @jounathaen
ASLR: Lay down the foundations
85ebaea 
- Move x86_64-related paging code to src/arch/x86_64/paging
- Tests: x86_64-related paging tests should use a guest_address that is
  not 0
- Tests: Move them in separate files, use appropriate 'use' directives
- Fix kernel memory loading
- Add guest_address getter in UhyveVm
- Change names of constants to clarify their purpose
- Use u64 for arch::RAM_START instead of GuestVirtAddr
- Remove pagetable_l0 from virt_to_phys function
- Various `cargo fmt`-related changes

We currently rely on guest_address in MmapMemory to calculate the
offsets during the initialization of the VM and when converting
virtual addresses to physical addresses. The latter case is intended
to be temporary - we should read the value from the CR3 register at
a later point.

Given this change, the arch::RAM_START's type was changed from
GuestVirtAddr to u64.

Although this current revision does work with relocatable binaries, it
is not making use of this functionality _just_ yet.

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
n0toose added a commit to n0toose/uhyve that referenced this issue Jul 6, 2024
@n0toose @jounathaen
ASLR: Lay down the foundations
c604fbe 
- Move x86_64-related paging code to src/arch/x86_64/paging
- Tests: x86_64-related paging tests should use a guest_address that is
  not 0
- Tests: Move them in separate files, use appropriate 'use' directives
- Fix kernel memory loading
- Add guest_address getter in UhyveVm
- Change names of constants to clarify their purpose
- Use u64 for arch::RAM_START instead of GuestVirtAddr
- Remove pagetable_l0 from virt_to_phys function
- Various `cargo fmt`-related changes
- aarch64: Blindly replace constant names and similar RAM_START change

We currently rely on guest_address in MmapMemory to calculate the
offsets during the initialization of the VM and when converting
virtual addresses to physical addresses. The latter case is intended
to be temporary - we should read the value from the CR3 register at
a later point.

Given this change, the arch::RAM_START's type was changed from
GuestVirtAddr to u64.

Although this current revision does work with relocatable binaries, it
is not making use of this functionality _just_ yet.

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
n0toose added a commit to n0toose/uhyve that referenced this issue Jul 6, 2024
@n0toose @jounathaen
ASLR: Lay down the foundations
b78afc1 
- Move x86_64-related paging code to src/arch/x86_64/paging
- Tests: x86_64-related paging tests should use a guest_address that is
  not 0
- Tests: Move them in separate files, use appropriate 'use' directives
- Fix kernel memory loading
- Add guest_address getter in UhyveVm
- Change names of constants to clarify their purpose
- Use u64 for arch::RAM_START instead of GuestVirtAddr
- Remove pagetable_l0 from virt_to_phys function
- Various `cargo fmt`-related changes
- aarch64: Blindly replace constant names and similar RAM_START change

We currently rely on guest_address in MmapMemory to calculate the
offsets during the initialization of the VM and when converting
virtual addresses to physical addresses. The latter case is intended
to be temporary - we should read the value from the CR3 register at
a later point.

Given this change, the arch::RAM_START's type was changed from
GuestVirtAddr to u64.

Although this current revision does work with relocatable binaries, it
is not making use of this functionality _just_ yet.

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
n0toose added a commit to n0toose/uhyve that referenced this issue Jul 6, 2024
@n0toose @jounathaen
ASLR: Lay down the foundations
008c06b 
- Move x86_64-related paging code to src/arch/x86_64/paging
- Tests: x86_64-related paging tests should use a guest_address that is
  not 0
- Tests: Move them in separate files, use appropriate 'use' directives
- Fix kernel memory loading
- Add guest_address getter in UhyveVm
- Change names of constants to clarify their purpose
- Use u64 for arch::RAM_START instead of GuestVirtAddr
- Remove pagetable_l0 from virt_to_phys function
- Various `cargo fmt`-related changes
- aarch64: Blindly replace constant names and similar RAM_START change

We currently rely on guest_address in MmapMemory to calculate the
offsets during the initialization of the VM and when converting
virtual addresses to physical addresses. The latter case is intended
to be temporary - we should read the value from the CR3 register at
a later point.

Given this change, the arch::RAM_START's type was changed from
GuestVirtAddr to u64.

Although this current revision does work with relocatable binaries, it
is not making use of this functionality _just_ yet.

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
n0toose added a commit to n0toose/uhyve that referenced this issue Jul 6, 2024
@n0toose @jounathaen
ASLR: Lay down the foundations
ec7be95 
- Move x86_64-related paging code to src/arch/x86_64/paging
- Tests: x86_64-related paging tests should use a guest_address that is
  not 0
- Tests: Move them in separate files, use appropriate 'use' directives
- Fix kernel memory loading
- Add guest_address getter in UhyveVm
- Change names of constants to clarify their purpose
- Use u64 for arch::RAM_START instead of GuestVirtAddr
- Remove pagetable_l0 from virt_to_phys function
- Various `cargo fmt`-related changes
- aarch64: Blindly replace constant names and similar RAM_START change

We currently rely on guest_address in MmapMemory to calculate the
offsets during the initialization of the VM and when converting
virtual addresses to physical addresses. The latter case is intended
to be temporary - we should read the value from the CR3 register at
a later point.

Given this change, the arch::RAM_START's type was changed from
GuestVirtAddr to u64.

Although this current revision does work with relocatable binaries, it
is not making use of this functionality _just_ yet.

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
n0toose added a commit to n0toose/uhyve that referenced this issue Jul 6, 2024
@n0toose @jounathaen
ASLR: Lay down the foundations
f5ce877 
- Move x86_64-related paging code to src/arch/x86_64/paging
- Tests: x86_64-related paging tests should use a guest_address that is
  not 0
- Tests: Move them in separate files, use appropriate 'use' directives
- Fix kernel memory loading
- Add guest_address getter in UhyveVm
- Change names of constants to clarify their purpose
- Use u64 for arch::RAM_START instead of GuestVirtAddr
- Remove pagetable_l0 from virt_to_phys function
- Various `cargo fmt`-related changes
- aarch64: Blindly replace constant names and similar RAM_START change

We currently rely on guest_address in MmapMemory to calculate the
offsets during the initialization of the VM and when converting
virtual addresses to physical addresses. The latter case is intended
to be temporary - we should read the value from the CR3 register at
a later point.

Given this change, the arch::RAM_START's type was changed from
GuestVirtAddr to u64.

Although this current revision does work with relocatable binaries, it
is not making use of this functionality _just_ yet.

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
n0toose added a commit to n0toose/uhyve that referenced this issue Jul 6, 2024
@n0toose @jounathaen
ASLR: Lay down the foundations
e15f59d 
- Move x86_64-related paging code to src/arch/x86_64/paging
- Tests: x86_64-related paging tests should use a guest_address that is
  not 0
- Tests: Move them in separate files, use appropriate 'use' directives
- Fix kernel memory loading
- Add guest_address getter in UhyveVm
- Change names of constants to clarify their purpose
- Use u64 for arch::RAM_START instead of GuestVirtAddr
- Remove pagetable_l0 from virt_to_phys function
- Various `cargo fmt`-related changes
- aarch64: Blindly replace constant names and similar RAM_START change

We currently rely on guest_address in MmapMemory to calculate the
offsets during the initialization of the VM and when converting
virtual addresses to physical addresses. The latter case is intended
to be temporary - we should read the value from the CR3 register at
a later point.

Given this change, the arch::RAM_START's type was changed from
GuestVirtAddr to u64.

Although this current revision does work with relocatable binaries, it
is not making use of this functionality _just_ yet.

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
n0toose added a commit to n0toose/uhyve that referenced this issue Jul 6, 2024
@n0toose @jounathaen
ASLR: Lay down the foundations
d41dbc5 
- Move x86_64-related paging code to src/arch/x86_64/paging
- Tests: x86_64-related paging tests should use a guest_address that is
  not 0
- Tests: Move them in separate files, use appropriate 'use' directives
- Fix kernel memory loading
- Add guest_address getter in UhyveVm
- Change names of constants to clarify their purpose
- Use u64 for arch::RAM_START instead of GuestVirtAddr
- Remove pagetable_l0 from virt_to_phys function
- Various `cargo fmt`-related changes
- aarch64: Blindly replace constant names and similar RAM_START change

We currently rely on guest_address in MmapMemory to calculate the
offsets during the initialization of the VM and when converting
virtual addresses to physical addresses. The latter case is intended
to be temporary - we should read the value from the CR3 register at
a later point.

Given this change, the arch::RAM_START's type was changed from
GuestVirtAddr to u64.

Although this current revision does work with relocatable binaries, it
is not making use of this functionality _just_ yet.

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
n0toose added a commit to n0toose/uhyve that referenced this issue Jul 6, 2024
@n0toose @jounathaen
ASLR: Lay down the foundations
6a1cfd1 
- Move x86_64-related paging code to src/arch/x86_64/paging
- Tests: x86_64-related paging tests should use a guest_address that is
  not 0
- Tests: Move them in separate files, use appropriate 'use' directives
- Fix kernel memory loading
- Add guest_address getter in UhyveVm
- Change names of constants to clarify their purpose
- Use u64 for arch::RAM_START instead of GuestVirtAddr
- Remove pagetable_l0 from virt_to_phys function
- Various `cargo fmt`-related changes
- aarch64: Blindly replace constant names and similar RAM_START change

We currently rely on guest_address in MmapMemory to calculate the
offsets during the initialization of the VM and when converting
virtual addresses to physical addresses. The latter case is intended
to be temporary - we should read the value from the CR3 register at
a later point.

Given this change, the arch::RAM_START's type was changed from
GuestVirtAddr to u64.

Although this current revision does work with relocatable binaries, it
is not making use of this functionality _just_ yet.

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
n0toose added a commit to n0toose/uhyve that referenced this issue Jul 6, 2024
@n0toose @jounathaen
ASLR: Lay down the foundations
893ec84 
- Move x86_64-related paging code to src/arch/x86_64/paging
- Tests: x86_64-related paging tests should use a guest_address that is
  not 0
- Tests: Move them in separate files, use appropriate 'use' directives
- Fix kernel memory loading
- Add guest_address getter in UhyveVm
- Change names of constants to clarify their purpose
- Use u64 for arch::RAM_START instead of GuestVirtAddr
- Remove pagetable_l0 from virt_to_phys function
- Various `cargo fmt`-related changes
- aarch64: Blindly replace constant names and similar RAM_START change

We currently rely on guest_address in MmapMemory to calculate the
offsets during the initialization of the VM and when converting
virtual addresses to physical addresses. The latter case is intended
to be temporary - we should read the value from the CR3 register at
a later point.

Given this change, the arch::RAM_START's type was changed from
GuestVirtAddr to u64.

Although this current revision does work with relocatable binaries, it
is not making use of this functionality _just_ yet.

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
n0toose added a commit to n0toose/uhyve that referenced this issue Jul 6, 2024
@n0toose @jounathaen
ASLR: Lay down the foundations
a884b57 
- Move x86_64-related paging code to src/arch/x86_64/paging
- Tests: x86_64-related paging tests should use a guest_address that is
  not 0
- Tests: Move them in separate files, use appropriate 'use' directives
- Fix kernel memory loading
- Add guest_address getter in UhyveVm
- Change names of constants to clarify their purpose
- Use u64 for arch::RAM_START instead of GuestVirtAddr
- Remove pagetable_l0 from virt_to_phys function
- Various `cargo fmt`-related changes
- aarch64: Blindly replace constant names and similar RAM_START change

We currently rely on guest_address in MmapMemory to calculate the
offsets during the initialization of the VM and when converting
virtual addresses to physical addresses. The latter case is intended
to be temporary - we should read the value from the CR3 register at
a later point.

Given this change, the arch::RAM_START's type was changed from
GuestVirtAddr to u64.

Although this current revision does work with relocatable binaries, it
is not making use of this functionality _just_ yet.

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
n0toose added a commit to n0toose/uhyve that referenced this issue Jul 6, 2024
@n0toose @jounathaen
ASLR: Lay down the foundations
c3d00b2 
- Move x86_64-related paging code to src/arch/x86_64/paging
- Tests: x86_64-related paging tests should use a guest_address that is
  not 0
- Tests: Move them in separate files, use appropriate 'use' directives
- Fix kernel memory loading
- Add guest_address getter in UhyveVm
- Change names of constants to clarify their purpose
- Use u64 for arch::RAM_START instead of GuestVirtAddr
- Remove pagetable_l0 from virt_to_phys function
- Various `cargo fmt`-related changes
- aarch64: Blindly replace constant names and similar RAM_START change

We currently rely on guest_address in MmapMemory to calculate the
offsets during the initialization of the VM and when converting
virtual addresses to physical addresses. The latter case is intended
to be temporary - we should read the value from the CR3 register at
a later point.

Given this change, the arch::RAM_START's type was changed from
GuestVirtAddr to u64.

Although this current revision does work with relocatable binaries, it
is not making use of this functionality _just_ yet.

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
@n0toose n0toose linked a pull request Jul 6, 2024 that will close this issue
Draft
n0toose added a commit to n0toose/uhyve that referenced this issue Jul 6, 2024
@n0toose @jounathaen
ASLR: Lay down the foundations
76f934d 
- Move x86_64-related paging code to src/arch/x86_64/paging
- Tests: x86_64-related paging tests should use a guest_address that is
  not 0
- Tests: Move them in separate files, use appropriate 'use' directives
- Fix kernel memory loading
- Add guest_address getter in UhyveVm
- Change names of constants to clarify their purpose
- Use u64 for arch::RAM_START instead of GuestVirtAddr
- Remove pagetable_l0 from virt_to_phys function
- Various `cargo fmt`-related changes
- aarch64: Blindly replace constant names and similar RAM_START change

We currently rely on guest_address in MmapMemory to calculate the
offsets during the initialization of the VM and when converting
virtual addresses to physical addresses. The latter case is intended
to be temporary - we should read the value from the CR3 register at
a later point.

Given this change, the arch::RAM_START's type was changed from
GuestVirtAddr to u64.

Although this current revision does work with relocatable binaries, it
is not making use of this functionality _just_ yet.

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
n0toose added a commit to n0toose/uhyve that referenced this issue Jul 6, 2024
@n0toose @jounathaen
ASLR: Lay down the foundations
c1c08c6 
- Move x86_64-related paging code to src/arch/x86_64/paging
- Tests: x86_64-related paging tests should use a guest_address that is
  not 0
- Tests: Move them in separate files, use appropriate 'use' directives
- Fix kernel memory loading
- Add guest_address getter in UhyveVm
- Change names of constants to clarify their purpose
- Use u64 for arch::RAM_START instead of GuestVirtAddr
- Remove pagetable_l0 from virt_to_phys function
- Various `cargo fmt`-related changes
- aarch64: Blindly replace constant names and similar RAM_START change

We currently rely on guest_address in MmapMemory to calculate the
offsets during the initialization of the VM and when converting
virtual addresses to physical addresses. The latter case is intended
to be temporary - we should read the value from the CR3 register at
a later point.

Given this change, the arch::RAM_START's type was changed from
GuestVirtAddr to u64.

Although this current revision does work with relocatable binaries, it
is not making use of this functionality _just_ yet.

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
n0toose added a commit to n0toose/uhyve that referenced this issue Jul 6, 2024
@n0toose @jounathaen
ASLR: Lay down the foundations
28b8dcf 
- Move x86_64-related paging code to src/arch/x86_64/paging
- Tests: x86_64-related paging tests should use a guest_address that is
  not 0
- Tests: Move them in separate files, use appropriate 'use' directives
- Fix kernel memory loading
- Add guest_address getter in UhyveVm
- Change names of constants to clarify their purpose
- Use u64 for arch::RAM_START instead of GuestVirtAddr
- Remove pagetable_l0 from virt_to_phys function
- Various `cargo fmt`-related changes
- aarch64: Blindly replace constant names and similar RAM_START change

We currently rely on guest_address in MmapMemory to calculate the
offsets during the initialization of the VM and when converting
virtual addresses to physical addresses. The latter case is intended
to be temporary - we should read the value from the CR3 register at
a later point.

Given this change, the arch::RAM_START's type was changed from
GuestVirtAddr to u64.

Although this current revision does work with relocatable binaries, it
is not making use of this functionality _just_ yet.

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
n0toose added a commit to n0toose/uhyve that referenced this issue Jul 8, 2024
@n0toose @jounathaen
ASLR: Lay down the foundations
3589fe8 
- Move x86_64-related paging code to src/arch/x86_64/paging
- Tests: x86_64-related paging tests should use a guest_address that is
  not 0
- Tests: Move them in separate files, use appropriate 'use' directives
- Tests: Use init_guest_mem wrapper in test_virt_to_phys
- Fix kernel memory loading
- Add guest_address getter in UhyveVm
- Change names of constants to clarify their purpose
- Use u64 for arch::RAM_START instead of GuestVirtAddr
- Remove pagetable_l0 from virt_to_phys function
- Various `cargo fmt`-related changes
- aarch64: Blindly replace constant names and similar RAM_START change

We currently rely on guest_address in MmapMemory to calculate the
offsets during the initialization of the VM and when converting
virtual addresses to physical addresses. The latter case is intended
to be temporary - we should read the value from the CR3 register at
a later point.

Given this change, the arch::RAM_START's type was changed from
GuestVirtAddr to u64.

Although this current revision does work with relocatable binaries, it
is not making use of this functionality _just_ yet.

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
n0toose added a commit to n0toose/uhyve that referenced this issue Jul 8, 2024
@n0toose @jounathaen
ASLR: Lay down the foundations
08bfcfd 
- Move x86_64-related paging code to src/arch/x86_64/paging
- Tests: x86_64-related paging tests should use a guest_address that is
  not 0
- Tests: Move them in separate files, use appropriate 'use' directives
- Tests: Use init_guest_mem wrapper in test_virt_to_phys
- Fix kernel memory loading
- Add guest_address getter in UhyveVm
- Change names of constants to clarify their purpose
- Use u64 for arch::RAM_START instead of GuestVirtAddr
- Remove pagetable_l0 from virt_to_phys function
- Various `cargo fmt`-related changes
- aarch64: Blindly replace constant names and similar RAM_START change

We currently rely on guest_address in MmapMemory to calculate the
offsets during the initialization of the VM and when converting
virtual addresses to physical addresses. The latter case is intended
to be temporary - we should read the value from the CR3 register at
a later point, but this is too complex for the time being because of
the different architectures.

Although this current revision does work with relocatable binaries, it
is not making use of this functionality _just_ yet.

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
jounathaen added a commit to n0toose/uhyve that referenced this issue Aug 5, 2024
@n0toose @jounathaen
ASLR: Lay down the foundations
76a8c64 
- Move x86_64-related paging code to src/arch/x86_64/paging
- Tests: x86_64-related paging tests should use a guest_address that is
  not 0
- Tests: Move them in separate files, use appropriate 'use' directives
- Tests: Use init_guest_mem wrapper in test_virt_to_phys
- Fix kernel memory loading
- Add guest_address getter in UhyveVm
- Change names of constants to clarify their purpose
- Use u64 for arch::RAM_START instead of GuestVirtAddr
- Remove pagetable_l0 from virt_to_phys function
- Various `cargo fmt`-related changes
- aarch64: Blindly replace constant names and similar RAM_START change

We currently rely on guest_address in MmapMemory to calculate the
offsets during the initialization of the VM and when converting
virtual addresses to physical addresses. The latter case is intended
to be temporary - we should read the value from the CR3 register at
a later point, but this is too complex for the time being because of
the different architectures.

Although this current revision does work with relocatable binaries, it
is not making use of this functionality _just_ yet.

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
jounathaen added a commit to n0toose/uhyve that referenced this issue Sep 18, 2024
@n0toose @jounathaen
ASLR: Lay down the foundations
0c0741b 
- Move x86_64-related paging code to src/arch/x86_64/paging
- Tests: x86_64-related paging tests should use a guest_address that is
  not 0
- Tests: Move them in separate files, use appropriate 'use' directives
- Tests: Use init_guest_mem wrapper in test_virt_to_phys
- Fix kernel memory loading
- Add guest_address getter in UhyveVm
- Change names of constants to clarify their purpose
- Use u64 for arch::RAM_START instead of GuestVirtAddr
- Remove pagetable_l0 from virt_to_phys function
- Various `cargo fmt`-related changes
- aarch64: Blindly replace constant names and similar RAM_START change

We currently rely on guest_address in MmapMemory to calculate the
offsets during the initialization of the VM and when converting
virtual addresses to physical addresses. The latter case is intended
to be temporary - we should read the value from the CR3 register at
a later point, but this is too complex for the time being because of
the different architectures.

Although this current revision does work with relocatable binaries, it
is not making use of this functionality _just_ yet.

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
jounathaen added a commit to n0toose/uhyve that referenced this issue Sep 18, 2024
@n0toose @jounathaen
ASLR: Lay down the foundations
b8e07d9 
- Move x86_64-related paging code to src/arch/x86_64/paging
- Tests: x86_64-related paging tests should use a guest_address that is
  not 0
- Tests: Move them in separate files, use appropriate 'use' directives
- Tests: Use init_guest_mem wrapper in test_virt_to_phys
- Fix kernel memory loading
- Add guest_address getter in UhyveVm
- Change names of constants to clarify their purpose
- Use u64 for arch::RAM_START instead of GuestVirtAddr
- Remove pagetable_l0 from virt_to_phys function
- Various `cargo fmt`-related changes
- aarch64: Blindly replace constant names and similar RAM_START change

We currently rely on guest_address in MmapMemory to calculate the
offsets during the initialization of the VM and when converting
virtual addresses to physical addresses. The latter case is intended
to be temporary - we should read the value from the CR3 register at
a later point, but this is too complex for the time being because of
the different architectures.

Although this current revision does work with relocatable binaries, it
is not making use of this functionality _just_ yet.

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
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ASLR: Lay down the foundations n0toose/uhyve
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