> -----Original Message----- > From: [email protected] <[email protected]> > Sent: Friday, August 2, 2019 12:27 PM > To: [email protected] > Cc: [email protected]; Jerin Jacob Kollanukkaran <[email protected]>; > Vamsi Krishna Attunuru <[email protected]>; Nithin Kumar > Dabilpuram <[email protected]> > Subject: [dpdk-dev] [PATCH v3 1/1] common/octeontx2: fix unaligned mbox > memory accesses > > From: Vamsi Attunuru <[email protected]> > > Octeontx2 PMD's mailbox client uses device memory to send messages to > mailbox server in the admin function Linux kernel driver. > The device memory used for the mailbox communication needs to be > qualified as volatile memory type to avoid unaligned device memory > accesses because of compiler's memory access coalescing. > > This patch modifies the mailbox request and responses as volatile type which > were non-volatile earlier and accessed from unaligned memory addresses > which resulted in bus errors on Fedora 30 with gcc 9.1.1. > > Fixes: 2b71657c8660 ("common/octeontx2: add mbox request and response > definition") > > Signed-off-by: Vamsi Attunuru <[email protected]> > Signed-off-by: Nithin Dabilpuram <[email protected]>
Acked-by: Jerin Jacob <[email protected]> Thomas, Could you merge this patch for rc4. It fixes the bus error with Fedora 30 with gcc 9.1.1.
