sux2mfgj / bitvisor-armv8 Goto Github PK

Porting bitvisor to AArch64.

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aarch64 baremetal hypervisor vmm

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bitvisor-armv8's Issues

PAGESIZE is defined multiple

https://github.com/sux2mfgj/bitvisor-armv8/blob/master/include/core.h#L43
https://github.com/sux2mfgj/bitvisor-armv8/blob/master/core/constants.h#L809

question about mmio handling

この関数でなぜ、mmioの処理を仕切らないのか?
https://github.com/sux2mfgj/bitvisor-armv8/blob/master/core/mmio.c#L107

bitvisor-armv8/core/gmm_access.c

Lines 42 to 52 in b6bf717

 void 

 read_gphys_b (u64 phys, void *data, u32 attr) 

 { 

 attr = cache_get_attr (phys, attr); 

 mmio_lock (); 

 if (!mmio_access_memory (phys, false, data, 1, attr)) { 

 phys = current->gmm.gp2hp (phys, NULL); 

 read_hphys_b (phys, data, attr); 

 } 

 mmio_unlock (); 

 }

mmio_access_memory()が0を返してきた時は、以下の処理となっているがなぜなのか

bitvisor-armv8/core/gmm_access.c

Lines 48 to 49 in b6bf717

 phys = current->gmm.gp2hp (phys, NULL); 

 read_hphys_b (phys, data, attr);

		phys = current->gmm.gp2hp (phys, NULL);
		read_hphys_b (phys, data, attr);

Update build system for aarch64

why does current->gmm defined as function pointer?

The current->gmm is setup at core/gmm_pass.c only.

 $ grep -r 'current->gmm' * |grep memcpy
 gmm_pass.c:     memcpy ((void *)&current->gmm, (void *)&func, sizeof func);

bitvisor-armv8/core/gmm_pass.c

Line 206 in b6bf717

memcpy ((void *)&current->gmm, (void *)&func, sizeof func);

Vision of the port

Hello

nice project! Is the changes going to merge back into the main BitVisor repository?
Or maybe you have no idea yet?

magic number, maybe it can be replaced by PAGESIZE

https://github.com/sux2mfgj/bitvisor-armv8/blob/master/core/mm.c#L578

?

bitvisor-armv8/core/mmio.c

Lines 71 to 72 in b4bcdfc

 if (a <= b) 

 return 0;

sux2mfgj / bitvisor-armv8 Goto Github PK

bitvisor-armv8's People

Contributors

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bitvisor-armv8's Issues

PAGESIZE is defined multiple

question about mmio handling

Update build system for aarch64

why does current->gmm defined as function pointer?

Vision of the port

magic number, maybe it can be replaced by PAGESIZE

?

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	void
	read_gphys_b (u64 phys, void *data, u32 attr)
	{
	attr = cache_get_attr (phys, attr);
	mmio_lock ();
	if (!mmio_access_memory (phys, false, data, 1, attr)) {
	phys = current->gmm.gp2hp (phys, NULL);
	read_hphys_b (phys, data, attr);
	}
	mmio_unlock ();
	}