Linaro-mm-sig

linaro-mm-sig@lists.linaro.org

62 participants
6213 discussions

by Tirrell Otalvaro

8 hours, 41 minutes

corgi puppies for sale near me

by Tirrell Otalvaro

8 hours, 41 minutes

corgis for sale

by Tirrell Otalvaro

8 hours, 42 minutes

corgi puppies

by Tirrell Otalvaro

8 hours, 42 minutes

corgi puppies for sale

by Tirrell Otalvaro

8 hours, 43 minutes

Re: [PATCH v4 1/2] dma-mapping: introduce DMA_ATTR_CC_DECRYPTED for pre-decrypted memory

by Jason Gunthorpe

On Tue, Mar 17, 2026 at 09:26:21AM +0100, Jiri Pirko wrote: > >...although, why *shouldn't* this be allowed with a vIOMMU? (Especially given > >that a vIOMMU for untrusted devices can be emulated by the host VMM without > >the CoCo hypervisor having to care at all - again, at least on Arm and other > >architectures where IOMMUs are regular driver model devices) > > Well, when iommu path is able to consume the attr, this restriction > should be lifted. This is basically a sanity check for the > dma_map_phys() caller. Right we eventually need a matching IOMMU_DECRYPTED. It needs to mirror how the CPUs work - any place that would use pgprot_decrypted to create a PTE should use IOMMU_PROT_DECRYPTED to create an iommu mapping. The current hack in AMD assumes IOMMU_DECRYPTED behavior for IOMMU_MMIO, but that isn't general enough.. There is some maze to get there but for the moment I think it is fine to just not support vIOMMU, it isn't like any vIOMMU drivers even exist for CC VMs right now. Jason

9 hours, 12 minutes

Re: [PATCH net-next v3 0/2] dma-buf: heaps: system: add an option to allocate explicitly decrypted memory

by Jason Gunthorpe

On Tue, Mar 24, 2026 at 05:36:23PM +0000, Mostafa Saleh wrote: > But it's not about drivers in that case, it's about many places > (SWIOTLB and DMA-direct) calling set_memory_decrypted() without clear > ownership so in some cases they step on each other's toes, and I don't > think that will get simpler with yet another caller in this series I don't understand how this can be, ownership is clear. SWIOTLB owns the buffer, dma alloc coherent owns the buffer, user owns the buffer. There should be no other cases, and they don't step on each other unless the APIs are being used wrong. > I am fine with the API design you mentioned, but I believe that it > needs clear documentation specifying who is responsible for > decryption. The code should provide wrappers checking for these cases > instead of having is_swiotlb_for_alloc() and force_dma_unencrypted() > everywhere in DMA-direct. Redoingt how dma-api works internally is some other project... It would be nice if swiotlb would sort of recursively DMA map using the new flag instead of open coding it but that is pretty minor. Jason

10 hours, 27 minutes

Re: [PATCH net-next v3 0/2] dma-buf: heaps: system: add an option to allocate explicitly decrypted memory

by Jason Gunthorpe

On Tue, Mar 24, 2026 at 12:14:36PM +0000, Mostafa Saleh wrote: > On Tue, Mar 24, 2026 at 12:01 PM Jason Gunthorpe <jgg(a)ziepe.ca> wrote: > > > > On Tue, Mar 17, 2026 at 01:24:13PM +0000, Mostafa Saleh wrote: > > > > > On the other hand, for restricted-dma, the memory decryption is deep > > > in the DMA direct memory allocation and the DMA API callers (for ex > > > virtio drivers) are clueless about it and can’t pass any attrs. > > > My proposal was specific to restricted-dma and won’t work for your case. > > > > How is this any different from CC? > > > > If the device cannot dma to "encrypted" memory, whatever that means > > for you, then the DMA API: > > - Makes dma alloc coherent return "decrypted" memory, and the built > > in mapping of coherent memory knows about this > > - Makes dma_map_xxx use SWIOTLB to bounce to decrypted memory > > > > There is no need for something like virtio drivers to be aware of > > any of this. > > > > On the other hand if the driver deliberately allocates decrypted > > memory without using DMA API alloc coherent then it knows it did it > > and can pass the flag to map it. > > > > The problem is that the DMA API currently gets confused by this; it > can end up double decrypting the memory or using the wrong functions > as mentioned in [1] I fully belive there are bugs, but the API design is sound. If you use the coherent allocations from the DMA API then it knows decryption has happened when it generates a dma_addr_t and there should be no issue. Now, if drivers are using the DMA API wrong, like trying to double map coherent allocations then they are broken. I also would not be surprised to find cases like this. Jason

16 hours

Re: [PATCH net-next v3 0/2] dma-buf: heaps: system: add an option to allocate explicitly decrypted memory

by Jason Gunthorpe

On Tue, Mar 17, 2026 at 01:24:13PM +0000, Mostafa Saleh wrote: > On the other hand, for restricted-dma, the memory decryption is deep > in the DMA direct memory allocation and the DMA API callers (for ex > virtio drivers) are clueless about it and can’t pass any attrs. > My proposal was specific to restricted-dma and won’t work for your case. How is this any different from CC? If the device cannot dma to "encrypted" memory, whatever that means for you, then the DMA API: - Makes dma alloc coherent return "decrypted" memory, and the built in mapping of coherent memory knows about this - Makes dma_map_xxx use SWIOTLB to bounce to decrypted memory There is no need for something like virtio drivers to be aware of any of this. On the other hand if the driver deliberately allocates decrypted memory without using DMA API alloc coherent then it knows it did it and can pass the flag to map it. > I am wondering if the kernel should have a more solid, unified method > for identifying already-decrypted memory instead. Perhaps we need a > way for the DMA API to natively recognize the encryption state of a > physical page (working alongside force_dma_unencrypted(dev)), rather > than relying on caller-provided attributes? Definately not, we do not want the DMA API inspecting things like this. Jason

16 hours, 23 minutes

+2347033464470 I want to join secret society for money ritual with no side effects in Australia

by ikembaorganisation＠gmail.com

+2347033464470 #LOOKING FOR HOW TO JOIN A SECRET BROTHERHOOD FOR SUCCESS, WEALTH, FAME, PROTECTION AND POWER. CONTACT THE TEMPLE GRANDMASTER TO BE FREE FROM POVERTY AND STRUGGLING. IKERIMAH BROTHERHOOD OCCULT IS A SACRED FRATERNITY WITH A GRAND LODGE TEMPLE SITUATED IN #NIGERIA, #AFRICA. BUT CAN MAKE YOU RICH FROM ANYWHERE IN THE WORLD, #ITALY, #GERMANY, #USA, #LONDON, #CANADA, #SAUDI ARABIA, #MALAYSIA, #EUROPE, #GHANA, #CAMEROON, #ZAMBIA, #LIBYA, #LIBERIA. #DUBAI ETC. HERE IN THIS GREAT ILLUMINATI AND HONORABLE OCCULT OUR NUMBER ONE OBLIGATION IS TO MAKE EVERY INITIATE MEMBER HERE RICH AND FAMOUS IN OTHER TO PRAISE THE POWERS THE LORD SPIRITUAL GUARDIANS OF AGE. SEARCHING ON HOW TO JOIN THE IKERIMAH BROTHERHOOD MONEY RITUAL OCCULT IS NOT THE PROBLEM BUT MAKE SURE YOU"VE THOUGHT ABOUT IT VERY WELL BEFORE REACHING US HERE BECAUSE NOT EVERYONE HAS THE HEART TO DO WHAT IT TAKES TO BECOME ONE OF US HERE, BUT IF YOU THINK YOU"RE SERIOUS MINDED AND READY TO RUN THE SPIRITUAL RACE OF LIFE IN OTHER TO ACQUIRE ALL YOU NEED HERE ON EARTH CONTACT SPIRITUAL GRANDMASTER NOW FOR INQUIRY +2347033464470 +2347033464470 OFTEN MANY HAS VENTURED INTO SPIRITUAL MEANS OF ACQUIRING LUXURY BUT ONLY FEW GET TO THE PEAK WHEN IT COMES TO SPIRITUAL WEALTH AND LUXURY NOT BECAUSE THEY ARE SPIRITUALLY INFECTED OR UNWORTHY BUT IT"S ON CLEARER VIEW TO THE HUMAN WORLD NOW TO ACTUALLY KNOW THAT IT TAKES A GREAT SACRIFICE AND OFFERING TO PIERCE THE HEART OF THE SPIRITUAL WORLD IN ORDER TO MAKE A REQUEST NOT JUST TO MAKE A REQUEST BUT TO GET ANSWERS AND POSITIVE RESPONSE FROM THE SPIRITUAL GUARDIANS OF AGE. WE THE INITIATE MEMBERS OF IKERIMAH. BROTHERHOOD HAVE BEEN ABLE TO GAIN A SPIRITUAL CLOSE GUARDED SECRET OF ACQUIRING WEALTH POWER & PROTECTION FROM THE GUARDIANS OF AGE THROUGH THE ORDERS OF THE TEMPLE GRANDMASTER AND OTHER SPIRITUAL LEADERS OF THE GRAND LODGE TEMPLE. +2347033464470 WE KNOW VERY WELL THAT EVERYONE THINKS THEY HAVE ALL IT TAKES TO BE RICH AND FAMOUS NOT MINDING THE FACT THAT ONLY FEW HAS THE ABILITY AND GRACE TO BE WEALTHY, BECAUSE IF MAKING WEALTH WAS THAT EASY EVERYONE SHOULD HAVE BEEN WEALTHY BY NOW. MAKING ENQUIRIES TO JOIN US HERE MIGHT BE OPEN FOR EVERYONE BUT NOT EVERYONE IS ACCEPTED AT THE END OF THE DAY. IKERIMAH BROTHERHOOD OCCULT IS NOT FOR THE RICH OR POOR BUT FOR THE “DESTINED TO BE RICH” IT DOESN'T MATTER WHERE YOU ARE COMING FROM OR WHO YOU THINK YOU"RE, ONCE YOUR DESTINY MATCHES WITH THE SPIRITUAL HEART OF THIS HONORABLE OCCULT YOU "RE CERTAIN TO BE ACCEPTED AND TRANSFORMED FROM POOR TO RICH OR RICH TO RICHER & POWERFUL. ALL IKERIMAH BROTHERHOOD INITIATE MEMBERS ARE ENTITLED TO EVERYTHING THAT MAKES LIFE WORTH LIVING NO MATTER HOW EXPENSIVE IT MIGHT BE, CARS, HOUSES, LUXURIOUS LIFE BUT ONE THING YOU MUST PUT FIRST IS COURAGE AND BRAVERY BECAUSE THOSE ARE THE KEYS TO UNLOCK TO ONES FORTUNE, AND BEFORE ANY MAN/WOMAN CAN BE ACCEPTED HERE HE OR SHE IS EXPECTED TO HAVE MADE UP HIS OR HER MIND KNOWING THE TASK AHEAD, THOUGH WE DO NOT USE HUMAN BLOOD FOR SACRIFICE BUT DO NOT BE DECEIVED THAT MAKING MONAY DOES"NT REQUIRED"S SACRIFICE"S. WE USE SOME SPECIAL ANIMAL BLOOD AND SERIES OF OTHER RITUAL MATERIALS TO PLEASE THE LORD SPIRITUAL GUARDIANS OF AGE, TO ACCEPT YOU AFTER WHICH YOU"LL BE ENDOWED WITH RICHES AND LUXURY BUT KNOW THAT THERE"SA GRAND PRIZE TO PAY WHICH IS YOU OFFERING YOUR SOUL TO THE LORD LUCIFER AT CERTAIN STAGE {78YRS} NOTHING ELSE WILL BE REQUIRED UNTIL YOUR LAST SACRIFICIAL RITE AND MONEY WILL NOT BE YOUR PROBLEM AGAIN UNTIL YOU DIE. THERE 7 SACRED RULES GUIDING THIS SACRED OCCULT WHICH MAKES IT EASY AND THE BEST FRATERNITY TO BELONG TO, THIS RULES CAN ONLY BE DISCLOSED TO AN ALREADY INITIATED MEMBER, STRICT MEASURES ARE APPLIED IN TERMS OF KEEPING THE SECRETS OF THIS GREAT OCCULT WHICH IS INSTANT DEATH , SO IF YOU KNOW YOU CAN"T KEEP SHUT WHEN THE CLOSE GUARDED SECRETS ARE BEEN GIVING TO YOU DURING YOUR INITIATION RITUAL; DO YOURSELF GOOD BY STAYING AWAY OTHER THAN BRINGING CALAMITY UPON YOURSELF AND HOUSEHOLD. THE IKERIMAH BROTHERHOOD WAS FOUNDED IN INDIA BY AFRICAN BROTHERS WHO TOOK DECISION TO CHANGE THE COURSE OF NATURE IN OTHER FOR LIFE TO BE EASY IN THE EARLY DAYS OF ALLAQUATHAMIN, THERE BY MAKING THE HOME OF THE LORD IKERIMAH BROTHERHOOD TO BE IN AFRICA, WE HAVE OUR TEMPLES HERE IN AFRICA OF WHICH THE GRAND LODGE TEMPLE HQ IS SITUATED IN A HIDDEN LOCATION IN ANAMBRA STATE NIGERIA. MANY INDIVIDUALS HAS TAKEN THE RISK OF ATTEMPTING #I_WANT_TO_JOIN_ILLUMINATI #I_WANT-TO-JOIN_THE_FREE_ MASONS #I_WANT_TO_JOIN_ODD_FELLOWS AND MANY OTHER SEARCH REQUESTS; THOUGH THERE"RE OTHER FRATERNITIES LIKE MENTIONED ABOVE BUT THE BAD NEWS IS YOU CAN NEVER BE LINKED TO ANY OF THIS OCCULTS BY ANYONE UNLESS THEY WANT TO GIVE YOU FALSE HOPES THEREBY EXTORTING FROM YOU. BECAUSE THE ILLUMINATI, FREE MASONS, ODD FELLOWS AND OTHERS WILL COME FOR YOU ONLY WHEN YOU"RE RICH AND FAMOUS, IN OTHER TO USE YOUR INFLUENCE TO GET TO MORE FAMOUS AND WEALTHY INDIVIDUALS AND SECONDLY THESE FRATERNITIES HAS THERE COUNTRIES AND CONTINENT WHERE THEY ACCEPT PEOPLE …EG EUROPE, ASIAN, NORTH-AMERICA. ETC AFRICA IS BELIEVED TO BE THE BLACK SHEEP OF THE CONTINENT THERE BY DISREGARDING WHATEVER CONCERNS AFRICA APART FROM EXTORTION AND ILLEGAL EXPORTATIONS OF MAMA AFRICA'S MINERAL RESOURCES; THE IKERIMAH BROTHERHOOD OCCULT ACCEPTS ANYONE HENCE YOU"RE HUMAN AND YOUR DESTINY MATCHES WITH THE SECRET HEART OF THIS BROTHERHOOD, IN ADDITION YOU"VE GOT TO HAVE THE HEART TO DO WHATEVER IT TAKES TO BECOME ONE OF US NOT MINDING YOUR ANXIETY & FEARS. BECAUSE OF FRAUDULENT ACTIVITIES WE,VE SEALED EVERY ONLINE ENQUIRIES THROUGH FALSE AGENTS OR FALSE CONTACTS PRETENDING TO BE COMING FROM THE IKERIMAH BROTHERHOOD TEMPLE MEDIA, FOR THIS REASON IT'S NOW ON THE DECISIONS OF THE TEMPLE GRANDMASTER TO ACCEPT, CONFIRM & CERTIFY ANY INTERESTED INDIVIDUAL WHO HAVE DECIDED TO JOIN THIS BROTHERHOOD UNDER THE SPIRITUAL GUARDIANS OF THE {SGM LS. HIGH CHIEF UZOMBA THOMPSON} IF YOU'RE STILL OUT THERE THINKING ON #HOW #TO #JOIN #OCCULT #FOR #MONEY #RITUAL, FOR WORK-PROMOTION, BUSINESS-GROWTH, JOB-PROMOTION, FAME, POWER, WEALTH, POLITICAL APPOINTMENT AND OTHER GOOD THINGS OF LIFE CONTACT TEMPLE GRANDMASTER TODAY FOR ENQUIRIES TO KNOW IF YOUR DESTINY WILL BE ACCEPTED HERE, CALL NOW +2347033464470 HAVE YOU BEEN LOOKING FOR A WAY TO END POVERTY IN YOUR LIFE AND YOU HAVE GONE MANY PLACES FOR SPIRITUAL HELP WITH NO GOOD RESULT, THIS IS THE FINAL STAGE OF YOUR STRUGGLING IN LIFE JUST CONTACT THE IKERIMAH BROTHERHOOD THE HOME OF WEALTH TODAY AND HAVE YOUR FINANCIAL BREAKTHROUGH. THIS IS A GREAT OPPORTUNITY GIVEN TO THE WISE PEOPLE IN AFRICA, ARE YOU FRUSTRATED IN LIFE. +2347033464470 WELCOME TO IKERIMAH BROTHERHOOD OF MONEY AND FAME WE ARE HERE TO EDUCATE EVERYONE WHO ARE INTERESTED IN BECOMING A MEMBER OF AN SECRET SOCIETY FOR ENDLESS WEALTH AND POWER, WE ARE HERE TO REDUCE THE LEVEL OF POVERTY IN THE WORLD, IF YOU WANT TO BE LIKE @E-MONEY, @ALHAJI DANGOTE, @CHIEF IFEANYI UBA, @CHIEF AMAECHI AND ALL OTHER RICH MEN ALL OVER THE WORLD. JOIN IKERIMAH BROTHERHOOD OCCULT NOW FOR THIS GREAT OPPORTUNITY TO LIBERATE YOUR FAMILY FROM THE SHACKLES OF POVERTY YOU FOUND YOURSELF AND TURN INTO LIGHT TODAY, WE ARE HERE TO MAKE THE POOR TO BECOME RICH AND THE RICH ONES TO BECOME RICHER. WE ARE SORRY ABOUT WHAT IS HAPPENING ONLINE BE CAREFUL ILLUMINATI IS NOT AFRICAN TRADITION IS MADE FOR THE RICH ONES AND THE FAMOUS THIS IS FOR THOSE OF YOU TALKING OF ILLUMINATI, CALL OUR SPIRITUAL GRAND MASTER FOR MORE INQUIRERS +2347033464470 #I WANT TO JOIN OCCULT #I WANT TO JOIN OCCULT TO BE RICH AND FAMOUS #I WANT TO JOIN SECRET SOCIETY IN AFRICA #I WANT TO JOIN OCCULT IN GHANA #I WANT TO JOIN OCCULT TO BE FREE FROM MY ENEMY #I WANT TO BELONG TO RICH FAMILY #I WANT TO JOIN OCCULT FOR PROTECTION #I WANT TO JOIN OCCULT TO BE WEALTHY LIFE #I WANT TO JOIN TO MAKE MY DREAMS TO COME TO PASS #I WANT TO JOIN OCCULT FOR MONEY RITUAL #I WANT TO JOIN OCCULT FRATERNITY #I WANT TO JOIN OCCULT GROUP FOR SUCCESS #I WANT TO JOIN OCCULT TEMPLE TO MAKE REAL MONEY #I WANT TO JOIN REAL OCCULT FOR PROMOTION IN MY BUSINESS, SEND {EMAIL} ikerimah 80(a)gmail.com I WANT TO BELONG TO THE RICH AND WEALTHY OCCULT SOCIETY ONLINE TO BE RICH INSTANTLY IKERIMAH BROTHERHOOD OCCULT IS HERE TO TO SHOW YOU THE EASY AND SHUTTER WAY OF MAKE MONEY TO LIVE A LUXURY LIFE. +2347033464470 I WANT TO JOIN SECRET BROTHERHOOD OCCULT TO BE AMONG THE RICHEST MEN IN THE WORD, JOIN IKERIMAH BROTHERHOOD OCCULT WITHOUT HUMAN SACRIFICE, WHAT WE USE HERE IS ONLY SPECIAL ANIMAL BLOODS AND SERIES OF OTHER SACRIFICIAL ITEMS WE USE THEM TO TALK TO THE LORD SPIRITUAL, THE GUARDIANS OF AGE, AND EVERY OF YOUR REQUEST WILL BE GRANTED. JOIN US TODAY AND BE WEALTHY AND FAMOUS AND SHAKE HANDS WITH OUR LORD LUCIFER THE POWER OF WEALTH AND RICHES. FOR MORE INFORMATION AND ENQUIRIES CALL +2347033464470 OUR MAIN AIM AND MISSION IS TO HELP ALL AFRICAN YOUTHS TO LIVE THE LIFE OF THEIR DREAMS, JOIN OCCULT FOR WEALTH/MONEY, FAME, POWER, PROTECTION,INSTANT RICE AND LUCK YOUR CLIENT THEM STAY FOR LIFE. If you've been living in hardship all through your life time– here is the opportunity to change the course of nature for the betterment of your future, join Ikerimah occult the billionaire's club to reshape your dreams and live a fulfilled destiny in your life time, won't you allow yourself to finally relax? enjoy life and live to your expectations don't miss this greatest opportunity you may never see it again. Ikerimah Brotherhood is an organization whose activities and inner functioning are concealed for non-members. Ikerimah Brotherhood is an organized conspiracy working in secret to achieve a hidden agenda. Members use secrecy to protect themselves and their movement. Critics view as malevolent organizations working against the general will of mankind, Members may be required to conceal or deny their membership, and they are often sworn to hold the sacred secret of this Brotherhood occult by an oath. Violating the oath may result in the application of severe sanctions. Like the most successful forgeries, We are not suppose to be on the internet but because of this comments: 'i want to join occult in nigeria' 'i want to join real occult in ghana' 'i want to join occult in africa to be rich' 'i want to join good occult fraternity in nigeria' 'i want to join great illuminati in nigeria to be rich' 'i want to join illuminati occult in nigeria/africa' 'i want to join illuminati brotherhood in nigeria' we are now here for only interested one's. We have received several emails regarding our stories in the media about joining the Ikerimah brotherhood occult. Most people have asked how they can join, while others simply wanted to understand the phenomenon further. Today, we look at how to join this secret society. According to the rules and regulations on how to join The family, the promise of wealth, success, power and domination simply by joining Ikerimah occult is heresy. Powerful, Influential, intelligent, entrepreneurial, successful and wealthy individuals make up the brotherhood order. In order to join the billionaire's occult Hello!! What challenges are you facing in life today, is it poverty/frustrations, Are you through with your education and no job employment? Are you a marketer no improvement You have tried all you can to make sure you are successful, famous, rich, powerful but nothing have work out for you, right now a great opportunity is giving to you to change your life for good, contact temple grandmaster +2347033464470 Why not start today to build that happiness, prosperity, inner power and peace by joining the Ikerimah Brotherhood? @We don't share or sell your details to third parties, your details are secured without fear, because we have pastors, imams, musicians, politicians, students, lawyers and other individuals. We accept everyone who is interested in becoming one of us despite your religion don't worry about your details. Call now to make more inquiry +2347033464470 WE HAVE OUR GRAND LODGE TEMPLE SITUATED HERE IN ABIA STATE NIGERIA. CALL +2347033464470

19 hours, 12 minutes

Jump to page:

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

Linaro-mm-sig