search for: kvm_spurious_fault

...eb 6 07:00:37 2018] Hardware name: OpenStack Foundation OpenStack Nova, BIOS 1.10.1-1ubuntu1~cloud0 04/01/2014 [Tue Feb 6 07:00:37 2018] task: ffff880037108d80 ti: ffff88042e964000 task.ti: ffff88042e964000 [Tue Feb 6 07:00:37 2018] RIP: 0010:[<ffffffffa04f20e5>] [<ffffffffa04f20e5>] kvm_spurious_fault+0x5/0x10 [kvm] [Tue Feb 6 07:00:37 2018] RSP: 0018:ffff88042e967d70 EFLAGS: 00010246 [Tue Feb 6 07:00:37 2018] RAX: 0000000000000000 RBX: ffff88042c4f0040 RCX: 0000000000000000 [Tue Feb 6 07:00:37 2018] RDX: 0000000000006820 RSI: 0000000000000282 RDI: ffff88042c4f0040 [Tue Feb 6 07:00:37 2018]...

...ta_acpi qemu_fw_cfg [ 1323.645674] CPU: 0 PID: 18587 Comm: CPU 0/KVM Not tainted 4.11.10-300.fc26.x86_64 #1 [ 1323.649592] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.11.0-1.fc27 04/01/2014 [ 1323.653935] task: ffff8b5be13ca580 task.stack: ffffa8b78147c000 [ 1323.656783] RIP: 0010:kvm_spurious_fault+0x9/0x10 [kvm] [ 1323.659317] RSP: 0018:ffffa8b78147fc78 EFLAGS: 00010246 [ 1323.661808] RAX: 0000000000000000 RBX: ffff8b5be13c0000 RCX: 0000000000000000 [ 1323.665077] RDX: 0000000000006820 RSI: 0000000000000292 RDI: ffff8b5be13c0000 [ 1323.668287] RBP: ffffa8b78147fc78 R08: ffff8b5be13c0090 R09:...

Changes: - patch v2: - Adapt patch to work post KPTI and compiler changes - Redo all performance testing with latest configs and compilers - Simplify mov macro on PIE (MOVABS now) - Reduce GOT footprint - patch v1: - Simplify ftrace implementation. - Use gcc mstack-protector-guard-reg=%gs with PIE when possible. - rfc v3: - Use --emit-relocs instead of -pie to reduce

Changes: - patch v2: - Adapt patch to work post KPTI and compiler changes - Redo all performance testing with latest configs and compilers - Simplify mov macro on PIE (MOVABS now) - Reduce GOT footprint - patch v1: - Simplify ftrace implementation. - Use gcc mstack-protector-guard-reg=%gs with PIE when possible. - rfc v3: - Use --emit-relocs instead of -pie to reduce

These patches make the changes necessary to build the kernel as Position Independent Executable (PIE) on x86_64. A PIE kernel can be relocated below the top 2G of the virtual address space. It allows to optionally extend the KASLR randomization range from 1G to 3G. Thanks a lot to Ard Biesheuvel & Kees Cook on their feedback on compiler changes, PIE support and KASLR in general. Thanks to

These patches make the changes necessary to build the kernel as Position Independent Executable (PIE) on x86_64. A PIE kernel can be relocated below the top 2G of the virtual address space. It allows to optionally extend the KASLR randomization range from 1G to 3G. Thanks a lot to Ard Biesheuvel & Kees Cook on their feedback on compiler changes, PIE support and KASLR in general. Thanks to

Changes: - patch v3: - Update on message to describe longer term PIE goal. - Minor change on ftrace if condition. - Changed code using xchgq. - patch v2: - Adapt patch to work post KPTI and compiler changes - Redo all performance testing with latest configs and compilers - Simplify mov macro on PIE (MOVABS now) - Reduce GOT footprint - patch v1: - Simplify ftrace

Changes: - patch v1: - Simplify ftrace implementation. - Use gcc mstack-protector-guard-reg=%gs with PIE when possible. - rfc v3: - Use --emit-relocs instead of -pie to reduce dynamic relocation space on mapped memory. It also simplifies the relocation process. - Move the start the module section next to the kernel. Remove the need for -mcmodel=large on modules. Extends

Changes: - patch v1: - Simplify ftrace implementation. - Use gcc mstack-protector-guard-reg=%gs with PIE when possible. - rfc v3: - Use --emit-relocs instead of -pie to reduce dynamic relocation space on mapped memory. It also simplifies the relocation process. - Move the start the module section next to the kernel. Remove the need for -mcmodel=large on modules. Extends