Changeset 610 for trunk/kernel/mm/vmm.h


Ignore:
Timestamp:
Dec 27, 2018, 7:38:58 PM (3 years ago)
Author:
alain
Message:

Fix several bugs in VFS to support the following
ksh commandis : cp, mv, rm, mkdir, cd, pwd

File:
1 edited

Legend:

Unmodified
Added
Removed
  • trunk/kernel/mm/vmm.h

    r595 r610  
    158158                  bool_t             mapping );
    159159
    160 /*******************************************************************************************
     160/*********************************************************************************************
    161161 * This function adds a vseg descriptor in the VSL of a given VMM,
    162162 * and updates the vmm field in the vseg descriptor.
    163163 * It takes the lock protecting VSL.
    164  *******************************************************************************************
     164 *********************************************************************************************
    165165 * @ vmm       : pointer on the VMM
    166166 * @ vseg      : pointer on the vseg descriptor
    167  ******************************************************************************************/
     167 ********************************************************************************************/
    168168void vmm_vseg_attach( struct vmm_s  * vmm,
    169169                      vseg_t        * vseg );
    170170
    171 /*******************************************************************************************
     171/*********************************************************************************************
    172172 * This function removes a vseg descriptor from the set of vsegs controlled by a given VMM,
    173173 * and updates the vmm field in the vseg descriptor. No memory is released.
    174174 * It takes the lock protecting VSL.
    175  *******************************************************************************************
     175 *********************************************************************************************
    176176 * @ vmm       : pointer on the VMM
    177177 * @ vseg      : pointer on the vseg descriptor
    178  ******************************************************************************************/
     178 ********************************************************************************************/
    179179void vmm_vseg_detach( struct vmm_s  * vmm,
    180180                      vseg_t        * vseg );
     
    326326 * (d) if the removed region cut the vseg in three parts, it is modified, and a new
    327327 *     vseg is created with same type.
    328  * FIXME [AG] this function must be called by a thread running in the reference cluster,
    329  * and the VMM must be updated in all process descriptors copies.
     328 * FIXME [AG] this function should be called by a thread running in the reference cluster,
     329 *       and the VMM should be updated in all process descriptors copies.
    330330 *********************************************************************************************
    331331 * @ process   : pointer on process descriptor
     
    357357/*********************************************************************************************
    358358 * This function is called by the generic exception handler in case of page-fault event,
    359  * detected for a given <vpn> in a given <process> in any cluster.
     359 * detected for a given <vpn>. The <process> argument is used to access the relevant VMM.
    360360 * It checks the missing VPN and returns an user error if it is not in a registered vseg.
    361361 * For a legal VPN, there is actually 3 cases:
     
    370370 *    on vseg type, and updates directly (without RPC) the local GPT and the reference GPT.
    371371 *    Other GPT copies  will updated on demand.
    372  * In the three cases, concurrent accesses to the GPT are handled, thanks to the
     372 * Concurrent accesses to the GPT are handled, thanks to the
    373373 * remote_rwlock protecting each GPT copy.
    374374 *********************************************************************************************
    375  * @ process   : pointer on local process descriptor copy.
    376  * @ vpn       : VPN of the missing PTE.
     375 * @ process  : local pointer on local process.
     376 * @ vpn      : VPN of the missing PTE.
    377377 * @ returns EXCP_NON_FATAL / EXCP_USER_ERROR / EXCP_KERNEL_PANIC after analysis
    378378 ********************************************************************************************/
     
    381381
    382382/*********************************************************************************************
    383  * This function is called by the generic exception handler in case of copy-on-write event,
    384  * detected for a given <vpn> in a given <process> in any cluster.
     383 * This function is called by the generic exception handler in case of WRITE violation event,
     384 * detected for a given <vpn>. The <process> argument is used to access the relevant VMM.
    385385 * It returns a kernel panic if VPN is not in a registered vseg or is not mapped.
    386386 * For a legal mapped vseg there is two cases:
     
    399399 *    Finally it calls the vmm_global_update_pte() function to reset the COW flag and set
    400400 *    the WRITE flag in all the GPT copies, using a RPC if the reference cluster is remote.
    401  * In both cases, concurrent accesses to the GPT are handled, thanks to the
    402  * remote_rwlock protecting each GPT copy.
     401 * In both cases, concurrent accesses to the GPT are protected by the remote_rwlock
     402 * atached to the GPT copy in VMM.
    403403 *********************************************************************************************
    404404 * @ process   : pointer on local process descriptor copy.
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