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0f4ef8a3 |
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07-Jan-2022 |
Ganesh Goudar <ganeshgr@linux.ibm.com> |
selftests/powerpc: Add test for real address error handling Add test for real address or control memory address access error handling, using NX-GZIP engine. The error is injected by accessing the control memory address using illegal instruction, on successful handling the process attempting to access control memory address using illegal instruction receives SIGBUS. Signed-off-by: Ganesh Goudar <ganeshgr@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220107141428.67862-2-ganeshgr@linux.ibm.com
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540761b7 |
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17-Jun-2021 |
Haren Myneni <haren@linux.ibm.com> |
powerpc/vas: Define QoS credit flag to allocate window PowerVM introduces two different type of credits: Default and Quality of service (QoS). The total number of default credits available on each LPAR depends on CPU resources configured. But these credits can be shared or over-committed across LPARs in shared mode which can result in paste command failure (RMA_busy). To avoid NX HW contention, the hypervisor ntroduces QoS credit type which makes sure guaranteed access to NX esources. The system admins can assign QoS credits or each LPAR via HMC. Default credit type is used to allocate a VAS window by default as on PowerVM implementation. But the process can pass VAS_TX_WIN_FLAG_QOS_CREDIT flag with VAS_TX_WIN_OPEN ioctl to open QoS type window. Signed-off-by: Haren Myneni <haren@linux.ibm.com> Acked-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/aa950b7b8e8077364267720274a7b9ec34e76e73.camel@linux.ibm.com
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45591da7 |
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21-Apr-2020 |
Stephen Rothwell <sfr@canb.auug.org.au> |
powerpc/vas: Include linux/types.h in uapi/asm/vas-api.h allyesconfig fails with: ./usr/include/asm/vas-api.h:15:2: error: unknown type name '__u32' 15 | __u32 version; | ^~~~~ ./usr/include/asm/vas-api.h:16:2: error: unknown type name '__s16' 16 | __s16 vas_id; /* specific instance of vas or -1 for default */ | ^~~~~ ./usr/include/asm/vas-api.h:17:2: error: unknown type name '__u16' 17 | __u16 reserved1; | ^~~~~ ./usr/include/asm/vas-api.h:18:2: error: unknown type name '__u64' 18 | __u64 flags; /* Future use */ | ^~~~~ ./usr/include/asm/vas-api.h:19:2: error: unknown type name '__u64' 19 | __u64 reserved2[6]; | ^~~~~ uapi headers should be self contained, so add an include of linux/types.h. Fixes: 45f25a79fe50 ("powerpc/vas: Define VAS_TX_WIN_OPEN ioctl API") Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Haren Myneni <haren@linux.ibm.com> [mpe: Flesh out change log from linux-next error report] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200422154129.11f988fd@canb.auug.org.au
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d53979b5 |
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20-Apr-2020 |
Raphael Moreira Zinsly <rzinsly@linux.ibm.com> |
selftests/powerpc: Add header files for GZIP engine test Add files to access the powerpc NX-GZIP engine in user space. Signed-off-by: Bulent Abali <abali@us.ibm.com> Signed-off-by: Raphael Moreira Zinsly <rzinsly@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200420205538.25181-2-rzinsly@linux.ibm.com
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45f25a79 |
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17-Apr-2020 |
Haren Myneni <haren@linux.ibm.com> |
powerpc/vas: Define VAS_TX_WIN_OPEN ioctl API Define the VAS_TX_WIN_OPEN ioctl interface for NX GZIP access from user space. This interface is used to open GZIP send window and mmap region which can be used by userspace to send requests to NX directly with copy/paste instructions. Signed-off-by: Haren Myneni <haren@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1587114065.2275.1106.camel@hbabu-laptop
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