Re:Re: How to add a haradware breakpoint on a physical memory address?
Thanks for your reply. The real fact is, a block of physical memory was reserver whilekernel booting, so that, the block of memory can not used by the whole memoryusing the normal api, such as malloc, get_free_pages.(because the block of memoryhave to reserved for remote dsp core). However, the block of memory was rewrittenif the application called eglSwapBuffer. and the gpu driver using gem memorymanaging method, i checked all pages allocated for ever gem_object but foundnothing. At 2017-11-17 23:03:32, valdis.kletni...@vt.edu wrote: >On Fri, 17 Nov 2017 17:57:26 +0800, kipade said: > >> I found some memory was rewrite by gpu module, but i have not found where it >> layout. >> I just use samples hw_breakpoint module for memory monitor. >> However, i found it only monitor on a virtual address, >> in another words, if two variable point the same physical memory, it can't >> be detected >> if I just monitor on the other variable. > >If you have two different variables pointing to the same physical address, >you *probably* are doing something wrong. Why was something else >using memory that got used by the GPU? > > ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: How to add a haradware breakpoint on a physical memory address?
On Fri, 17 Nov 2017 17:57:26 +0800, kipade said: > I found some memory was rewrite by gpu module, but i have not found where it > layout. > I just use samples hw_breakpoint module for memory monitor. > However, i found it only monitor on a virtual address, > in another words, if two variable point the same physical memory, it can't be > detected > if I just monitor on the other variable. If you have two different variables pointing to the same physical address, you *probably* are doing something wrong. Why was something else using memory that got used by the GPU? pgppttQp_s5IR.pgp Description: PGP signature ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
How to add a haradware breakpoint on a physical memory address?
I found some memory was rewrite by gpu module, but i have not found where it layout. I just use samples hw_breakpoint module for memory monitor. However, i found it only monitor on a virtual address, in another words, if two variable point the same physical memory, it can't be detected if I just monitor on the other variable. any hints will be very very appreciated.___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
