search for: nouveau_dmem_copy_one

...a and posing a security risk. To mitigate this, the patch ensures the allocation of a non-dirty (zero) page for the destination, preventing the return of a dirty page and enhancing driver security in case of failure. - Privileged Error in Copy Engine Channel: An error was observed when the nouveau_dmem_copy_one function is executed, leading to a Host Copy Engine Privileged error on channel 1. The patch resolves this by adjusting the Copy Engine channel configuration to permit privileged push commands, resolving the error. Changes since V3: - Fixed version according to Danilo Krummrich's comment...

...a and posing a security risk. To mitigate this, the patch ensures the allocation of a non-dirty (zero) page for the destination, preventing the return of a dirty page and enhancing driver security in case of failure. - Privileged Error in Copy Engine Channel: An error was observed when the nouveau_dmem_copy_one function is executed, leading to a Host Copy Engine Privileged error on channel 1. The patch resolves this by adjusting the Copy Engine channel configuration to permit privileged push commands, resolving the error. Changes since V2: - Fixed version according to Danilo Krummrich's comment...

When `nouveau_dmem_copy_one` is called, the following error occurs: [272146.675156] nouveau 0000:06:00.0: fifo: PBDMA9: 00000004 [HCE_PRIV] ch 1 00000300 00003386 This indicates that a copy push command triggered a Host Copy Engine Privileged error on channel 1 (Copy Engine channel). To address this issue, modify the Copy E...

...nd pose a security risk. To mitigate this vulnerability, the patch ensures that a zero page is allocated for the destination page, thereby preventing memory leaks and enhancing the security of the driver in case of failure. - Privileged Error in Copy Engine Channel - an error was observed when the nouveau_dmem_copy_one function is executed, leading to a Host Copy Engine Privileged error on channel 1. The patch addresses this by adjusting the Copy Engine channel configuration to permit privileged push commands, thus resolving the error. Yonatan Maman (2): nouveau/dmem: Fix privileged error in copy engine channe...

From: Yonatan Maman <Ymaman at Nvidia.com> When `nouveau_dmem_copy_one` is called, the following error occurs: [272146.675156] nouveau 0000:06:00.0: fifo: PBDMA9: 00000004 [HCE_PRIV] ch 1 00000300 00003386 This indicates that a copy push command triggered a Host Copy Engine Privileged error on channel 1 (Copy Engine channel). To address this issue, modify the Copy E...

A copy push command might fail, causing `migrate_to_ram` to return a dirty HIGH_USER page to the user. This exposes a security vulnerability in the nouveau driver. To prevent memory leaks in `migrate_to_ram` upon a copy error, allocate a zero page for the destination page. Signed-off-by: Yonatan Maman <Ymaman at Nvidia.com> Signed-off-by: Gal Shalom <GalShalom at Nvidia.com> ---

From: Yonatan Maman <Ymaman at Nvidia.com> This patch series aims to enable Peer-to-Peer (P2P) DMA access in GPU-centric applications that utilize RDMA and private device pages. This enhancement is crucial for minimizing data transfer overhead by allowing the GPU to directly expose device private page data to devices such as NICs, eliminating the need to traverse system RAM, which is the