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Remove pagetable_l0 parameter in virt_to_phys. #719

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jounathaen opened this issue Jun 24, 2024 · 1 comment · May be fixed by #725
Closed

Remove pagetable_l0 parameter in virt_to_phys. #719

jounathaen opened this issue Jun 24, 2024 · 1 comment · 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 n0toose mentioned this issue Jul 6, 2024
Open
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 Nov 20, 2024
@n0toose @jounathaen
ASLR: Lay down the foundations
fdb9f20 
- 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 Dec 2, 2024
@n0toose @jounathaen
ASLR: Lay down the foundations
372ce28 
- 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 Dec 3, 2024
@n0toose @jounathaen
ASLR: Lay down the foundations
74bb8d2 
- 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 Dec 3, 2024
@n0toose @jounathaen
ASLR: Lay down the foundations
a6c55b2 
- 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 Dec 10, 2024
@n0toose @jounathaen
ASLR: Lay down the foundations
206e13a 
- 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 Jan 29, 2025
@n0toose @jounathaen
ASLR: Lay down the foundations
ce74dd0 
- 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 Jan 29, 2025
@n0toose @jounathaen
ASLR: Lay down the foundations
caccf1f 
- 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 Jan 29, 2025
@n0toose @jounathaen
ASLR: Lay down the foundations
4824839 
- 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 Jan 29, 2025
@n0toose @jounathaen
Implement ASLR for uhyve.
13a1799 
- Kernel is loaded to a random physical address
- Pagetables are created for the kernel region instead of just the first
  gigabyte

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
jounathaen added a commit to n0toose/uhyve that referenced this issue Jan 29, 2025
@n0toose @jounathaen
Implement ASLR for uhyve.
74d0048 
- Kernel is loaded to a random physical address
- Pagetables are created for the kernel region instead of just the first
  gigabyte

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
jounathaen added a commit to n0toose/uhyve that referenced this issue Jan 29, 2025
@n0toose @jounathaen
Implement ASLR for uhyve.
063fd95 
- Kernel is loaded to a random physical address
- Pagetables are created for the kernel region instead of just the first
  gigabyte

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
jounathaen added a commit to n0toose/uhyve that referenced this issue Jan 29, 2025
@n0toose @jounathaen
Implement ASLR for uhyve.
78ada8f 
- Kernel is loaded to a random physical address
- Pagetables are created for the kernel region instead of just the first
  gigabyte

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
jounathaen added a commit to n0toose/uhyve that referenced this issue Jan 30, 2025
@n0toose @jounathaen
Implement ASLR for uhyve.
c0021d4 
- Kernel is loaded to a random physical address
- Pagetables are created for the kernel region instead of just the first
  gigabyte

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
jounathaen added a commit to n0toose/uhyve that referenced this issue Jan 30, 2025
@n0toose @jounathaen
Implement ASLR for uhyve.
ddb1645 
- Kernel is loaded to a random physical address
- Pagetables are created for the kernel region instead of just the first
  gigabyte

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
jounathaen added a commit to n0toose/uhyve that referenced this issue Jan 30, 2025
@n0toose @jounathaen
Implement ASLR for uhyve.
a4f41cf 
- Kernel is loaded to a random physical address
- Pagetables are created for the kernel region instead of just the first
  gigabyte

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
jounathaen added a commit to n0toose/uhyve that referenced this issue Jan 31, 2025
@n0toose @jounathaen
Implement ASLR for uhyve.
7702040 
- Kernel is loaded to a random physical address
- Pagetables are created for the kernel region instead of just the first
  gigabyte

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
jounathaen added a commit to n0toose/uhyve that referenced this issue Jan 31, 2025
@n0toose @jounathaen
Implement ASLR for uhyve.
87e301f 
- Kernel is loaded to a random physical address
- Pagetables are created for the kernel region instead of just the first
  gigabyte

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
jounathaen added a commit to n0toose/uhyve that referenced this issue Jan 31, 2025
@n0toose @jounathaen
Implement ASLR for uhyve.
0aeaae6 
- Kernel is loaded to a random physical address
- Pagetables are created for the kernel region instead of just the first
  gigabyte

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
jounathaen added a commit to n0toose/uhyve that referenced this issue Jan 31, 2025
@n0toose @jounathaen
Implement ASLR for uhyve.
323b364 
- Kernel is loaded to a random physical address
- Pagetables are created for the kernel region instead of just the first
  gigabyte

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
@jounathaen
Copy link
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What is now done in #725 is to keep the parameter in that function but query the registers upon calling the function.

jounathaen added a commit to n0toose/uhyve that referenced this issue Jan 31, 2025
@n0toose @jounathaen
Implement ASLR for uhyve.
92a7025 
- Kernel is loaded to a random physical address
- Pagetables are created for the kernel region instead of just the first
  gigabyte

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
jounathaen added a commit to n0toose/uhyve that referenced this issue Jan 31, 2025
@n0toose @jounathaen
Implement ASLR for uhyve.
b500b7d 
- Kernel is loaded to a random physical address
- Pagetables are created for the kernel region instead of just the first
  gigabyte

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
jounathaen added a commit to n0toose/uhyve that referenced this issue Jan 31, 2025
@n0toose @jounathaen
Implement ASLR for uhyve.
54a2e45 
- Kernel is loaded to a random physical address
- Pagetables are created for the kernel region instead of just the first
  gigabyte

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
jounathaen added a commit to n0toose/uhyve that referenced this issue Jan 31, 2025
@n0toose @jounathaen
Implement ASLR for uhyve.
df40d63 
- Kernel is loaded to a random physical address
- Pagetables are created for the kernel region instead of just the first
  gigabyte

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
jounathaen added a commit to n0toose/uhyve that referenced this issue Jan 31, 2025
@n0toose @jounathaen
Implement ASLR for uhyve.
5d609d1 
- Kernel is loaded to a random physical address
- Pagetables are created for the kernel region instead of just the first
  gigabyte

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
jounathaen added a commit to n0toose/uhyve that referenced this issue Jan 31, 2025
@n0toose @jounathaen
Implement ASLR for uhyve.
a25f971 
- Kernel is loaded to a random physical address
- Pagetables are created for the kernel region instead of just the first
  gigabyte

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
jounathaen added a commit to n0toose/uhyve that referenced this issue Jan 31, 2025
@n0toose @jounathaen
Implement ASLR for uhyve.
e4a1090 
- Kernel is loaded to a random physical address
- Pagetables are created for the kernel region instead of just the first
  gigabyte

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
jounathaen added a commit to n0toose/uhyve that referenced this issue Feb 3, 2025
@n0toose @jounathaen
Implement ASLR for uhyve.
60c0080 
- Kernel is loaded to a random physical address
- Pagetables are created for the kernel region instead of just the first
  gigabyte

Fixes hermit-os#719.

Co-authored-by: Jonathan <[email protected]>
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