On Wed, July 18, 2012 11:46 pm, Chris Ball wrote: > Hi Yaniv, > > On Thu, Jun 28 2012, Yaniv Gardi wrote: >> This feature delete the unmap memory region of the eMMC card, >> by writing to a specific register in the EXT_CSD >> unmap region is the memory region that were previously deleted >> (by erase, trim or discard operation) >> >> Signed-off-by: Yaniv Gardi <[email protected]> > > Did you reply to Chuanxiao's review comments yet? He said: > > "So to implement your scenario, how about only add > mmc_blk_issue_sanitize_rq() for REQ_SANITIZE but not touch > mmc_blk_issue_secdiscard_rq()? With your changes in > mmc_blk_issue_secdiscard_rq(), eMMC4.5 device will be failed to operate > secure trim/erase for REQ_SECURE request." > > at: http://thread.gmane.org/gmane.linux.kernel.mmc/14822/focus=14880 > > Thanks, > > - Chris. > -- > Chris Ball <[email protected]> <http://printf.net/> > One Laptop Per Child >
Secure trim and secure erase were removed from eMMC4.5. Please refer to annex B at B.6 section in eMMC4.5 spec. Therefore, failure upon trying to do secure trim/erase is the expected behavior for eMMC4.5 devices. Thanks, Maya -- Sent by consultant of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
