Hi Ayaz, Thanks for your help.
Can I do it through the page cache by getting the page (page descriptor structure) corresponding to the file in vfs_write call? If so do you know where should I make the changes? Thanks ________________________________ From: Ayaz Akram <yazak...@ucdavis.edu> Sent: Sunday, December 20, 2020 8:28 AM To: gem5 users mailing list <gem5-users@gem5.org> Cc: gem5-users <gem5-users-boun...@gem5.org>; ABD ALRHMAN ABO ALKHEEL <abdkeel...@hotmail.com> Subject: Re: [gem5-users] PTE Flags Hi, Based on my understanding of what you are trying to do, I would suggest looking into src/arch/x86/tlb.cc (assuming you want to use x86) around line 400, to see how to access page table entries from a process pointer. syscall_emul.hh already includes sim/process.hh, so you can follow what is done in tlb.cc and play with the flags that you want to change. -Ayaz On Fri, Dec 11, 2020 at 5:08 PM ABD ALRHMAN ABO ALKHEEL via gem5-users <gem5-users@gem5.org<mailto:gem5-users@gem5.org>> wrote: Hello Everyone, I am currently working on write_func system call in syscall_hh and i want to prevent writing to the file by changing the page table entry (PTE) flag. Where should i change? Any help would be appreciated. Thanks _______________________________________________ gem5-users mailing list -- gem5-users@gem5.org<mailto:gem5-users@gem5.org> To unsubscribe send an email to gem5-users-le...@gem5.org<mailto:gem5-users-le...@gem5.org> %(web_page_url)slistinfo%(cgiext)s/%(_internal_name)s
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