search for: relocate_kernel

...ested to merge Xen x86 assembler code with baremetal x86 code. This could simplify and reduce a bit size of kernel code. However, this solution requires some changes in baremetal x86 code. First of all code which establishes transition page table should be moved back from machine_kexec_$(BITS).c to relocate_kernel_$(BITS).S. Another important thing which should be changed in that case is format of page_list array. Xen kexec hypercall requires to alternate physical addresses with virtual ones. These and other required stuff have not been done in that version because I am not sure that solution will be accepte...

...ested to merge Xen x86 assembler code with baremetal x86 code. This could simplify and reduce a bit size of kernel code. However, this solution requires some changes in baremetal x86 code. First of all code which establishes transition page table should be moved back from machine_kexec_$(BITS).c to relocate_kernel_$(BITS).S. Another important thing which should be changed in that case is format of page_list array. Xen kexec hypercall requires to alternate physical addresses with virtual ones. These and other required stuff have not been done in that version because I am not sure that solution will be accepte...

...ested to merge Xen x86 assembler code with baremetal x86 code. This could simplify and reduce a bit size of kernel code. However, this solution requires some changes in baremetal x86 code. First of all code which establishes transition page table should be moved back from machine_kexec_$(BITS).c to relocate_kernel_$(BITS).S. Another important thing which should be changed in that case is format of page_list array. Xen kexec hypercall requires to alternate physical addresses with virtual ones. These and other required stuff have not been done in that version because I am not sure that solution will be accepte...

...f-by: Isaku Yamahata <yamahata@valinux.co.jp> diff -r 782599274bf9 xen/arch/ia64/xen/Makefile --- a/xen/arch/ia64/xen/Makefile Tue Sep 30 10:14:54 2008 +0100 +++ b/xen/arch/ia64/xen/Makefile Wed Oct 01 12:09:25 2008 +0900 @@ -1,4 +1,5 @@ subdir-y += oprofile +subdir-y += cpufreq obj-y += relocate_kernel.o obj-y += machine_kexec.o diff -r 782599274bf9 xen/arch/ia64/xen/cpufreq/Makefile --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/xen/arch/ia64/xen/cpufreq/Makefile Wed Oct 01 12:09:25 2008 +0900 @@ -0,0 +1,1 @@ +obj-y += cpufreq.o diff -r 782599274bf9 xen/arch/ia64/xen/cpufreq/cpufreq.c --- /...

...4_ACPI_PARKING_PROTOCOL) += acpi_parking_protocol.o -obj-$(CONFIG_PARAVIRT) += paravirt.o +obj-$(CONFIG_PARAVIRT) += paravirt.o paravirt-spinlocks.o obj-$(CONFIG_RANDOMIZE_BASE) += kaslr.o obj-$(CONFIG_HIBERNATION) += hibernate.o hibernate-asm.o obj-$(CONFIG_KEXEC_CORE) += machine_kexec.o relocate_kernel.o \ diff --git a/arch/arm64/kernel/paravirt-spinlocks.c b/arch/arm64/kernel/paravirt-spinlocks.c new file mode 100644 index 000000000000..718aa773d45c --- /dev/null +++ b/arch/arm64/kernel/paravirt-spinlocks.c @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright(c) 2019 H...

...le | 3 + arch/x86/xen/enlighten.c | 12 ++ arch/x86/xen/kexec.c | 150 ++++++++++++++++ arch/x86/xen/machine_kexec_32.c | 245 ++++++++++++++++++++++++++ arch/x86/xen/machine_kexec_64.c | 301 +++++++++++++++++++++++++++++++ arch/x86/xen/relocate_kernel_32.S | 323 ++++++++++++++++++++++++++++++++++ arch/x86/xen/relocate_kernel_64.S | 309 ++++++++++++++++++++++++++++++++ drivers/xen/sys-hypervisor.c | 42 +++++- include/linux/kexec.h | 18 ++ include/xen/interface/xen.h | 33 ++++ kernel/kexec.c...

...le | 3 + arch/x86/xen/enlighten.c | 12 ++ arch/x86/xen/kexec.c | 150 ++++++++++++++++ arch/x86/xen/machine_kexec_32.c | 245 ++++++++++++++++++++++++++ arch/x86/xen/machine_kexec_64.c | 301 +++++++++++++++++++++++++++++++ arch/x86/xen/relocate_kernel_32.S | 323 ++++++++++++++++++++++++++++++++++ arch/x86/xen/relocate_kernel_64.S | 309 ++++++++++++++++++++++++++++++++ drivers/xen/sys-hypervisor.c | 42 +++++- include/linux/kexec.h | 18 ++ include/xen/interface/xen.h | 33 ++++ kernel/kexec.c...

...le | 3 + arch/x86/xen/enlighten.c | 12 ++ arch/x86/xen/kexec.c | 150 ++++++++++++++++ arch/x86/xen/machine_kexec_32.c | 245 ++++++++++++++++++++++++++ arch/x86/xen/machine_kexec_64.c | 301 +++++++++++++++++++++++++++++++ arch/x86/xen/relocate_kernel_32.S | 323 ++++++++++++++++++++++++++++++++++ arch/x86/xen/relocate_kernel_64.S | 309 ++++++++++++++++++++++++++++++++ drivers/xen/sys-hypervisor.c | 42 +++++- include/linux/kexec.h | 18 ++ include/xen/interface/xen.h | 33 ++++ kernel/kexec.c...

This patch set aims to support the vcpu_is_preempted() functionality under KVM/arm64, which allowing the guest to obtain the VCPU is currently running or not. This will enhance lock performance on overcommitted hosts (more runnable VCPUs than physical CPUs in the system) as doing busy waits for preempted VCPUs will hurt system performance far worse than early yielding. We have observed some

All, I''m posting to the Xen-devel list and the OSDL fastboot list. There are a number of Xen folks who''ll want to look at the code. For the fastboot folks, this is mostly intended as an announcement of the port. Please limit your replies to the list(s) that they applies to, thanks :-) A number of people have expressed interest in kexec support for Xen guests. In

From: Zengruan Ye <yezengruan at huawei.com> This patch set aims to support the vcpu_is_preempted() functionality under KVM/arm64, which allowing the guest to obtain the vcpu is currently running or not. This will enhance lock performance on overcommitted hosts (more runnable vcpus than physical cpus in the system) as doing busy waits for preempted vcpus will hurt system performance far

From: Zengruan Ye <yezengruan at huawei.com> This patch set aims to support the vcpu_is_preempted() functionality under KVM/arm64, which allowing the guest to obtain the vcpu is currently running or not. This will enhance lock performance on overcommitted hosts (more runnable vcpus than physical cpus in the system) as doing busy waits for preempted vcpus will hurt system performance far