- 10 1月, 2013 1 次提交
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由 Ian Munsie 提交于
For PR KVM we allow userspace to map 0xc000000000000000. Because transitioning from userspace to the guest kernel may use the relocated exception vectors we have to disable relocation on exceptions whenever PR KVM is active as we cannot trust that address. This issue does not apply to HV KVM, since changing from a guest to the hypervisor will never use the relocated exception vectors. Currently the hypervisor interface only allows us to toggle relocation on exceptions on a partition wide scope, so we need to globally disable relocation on exceptions when the first PR KVM instance is started and only re-enable them when all PR KVM instances have been destroyed. It's a bit heavy handed, but until the hypervisor gives us a lightweight way to toggle relocation on exceptions on a single thread it's only real option. Signed-off-by: NIan Munsie <imunsie@au1.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 15 11月, 2012 2 次提交
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由 Ian Munsie 提交于
I am going to use this in the next patch, better to have this code in one place rather than three. Signed-off-by: NIan Munsie <imunsie@au1.ibm.com> Signed-off-by: NMichael Neuling <mikey@neuling.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Ian Munsie 提交于
This new hcall in POWER8 is used to set various resource mode registers. eg. it can set address translation mode on interrupt (note: partition wide scope) Signed-off-by: NIan Munsie <imunsie@au1.ibm.com> Signed-off-by: NMichael Neuling <mikey@neuling.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 10 9月, 2012 1 次提交
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由 Michael Neuling 提交于
These are no longer used so get rid of them Signed-off-by: NMichael Neuling <mikey@neuling.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 14 5月, 2012 1 次提交
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由 Kent Yoder 提交于
The Platform Facilities Option (PFO) adds several new h_calls and more return codes. Signed-off-by: NRobert Jennings <rcj@linux.vnet.ibm.com> Signed-off-by: NKent Yoder <key@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 08 4月, 2012 1 次提交
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由 Paul Mackerras 提交于
The PAPR API allows three sorts of per-virtual-processor areas to be registered (VPA, SLB shadow buffer, and dispatch trace log), and furthermore, these can be registered and unregistered for another virtual CPU. Currently we just update the vcpu fields pointing to these areas at the time of registration or unregistration. If this is done on another vcpu, there is the possibility that the target vcpu is using those fields at the time and could end up using a bogus pointer and corrupting memory. This fixes the race by making the target cpu itself do the update, so we can be sure that the update happens at a time when the fields aren't being used. Each area now has a struct kvmppc_vpa which is used to manage these updates. There is also a spinlock which protects access to all of the kvmppc_vpa structs, other than to the pinned_addr fields. (We could have just taken the spinlock when using the vpa, slb_shadow or dtl fields, but that would mean taking the spinlock on every guest entry and exit.) This also changes 'struct dtl' (which was undefined) to 'struct dtl_entry', which is what the rest of the kernel uses. Thanks to Michael Ellerman <michael@ellerman.id.au> for pointing out the need to initialize vcpu->arch.vpa_update_lock. Signed-off-by: NPaul Mackerras <paulus@samba.org> Signed-off-by: NAlexander Graf <agraf@suse.de> Signed-off-by: NAvi Kivity <avi@redhat.com>
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- 12 7月, 2011 1 次提交
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由 Paul Mackerras 提交于
This adds the infrastructure for handling PAPR hcalls in the kernel, either early in the guest exit path while we are still in real mode, or later once the MMU has been turned back on and we are in the full kernel context. The advantage of handling hcalls in real mode if possible is that we avoid two partition switches -- and this will become more important when we support SMT4 guests, since a partition switch means we have to pull all of the threads in the core out of the guest. The disadvantage is that we can only access the kernel linear mapping, not anything vmalloced or ioremapped, since the MMU is off. This also adds code to handle the following hcalls in real mode: H_ENTER Add an HPTE to the hashed page table H_REMOVE Remove an HPTE from the hashed page table H_READ Read HPTEs from the hashed page table H_PROTECT Change the protection bits in an HPTE H_BULK_REMOVE Remove up to 4 HPTEs from the hashed page table H_SET_DABR Set the data address breakpoint register Plus code to handle the following hcalls in the kernel: H_CEDE Idle the vcpu until an interrupt or H_PROD hcall arrives H_PROD Wake up a ceded vcpu H_REGISTER_VPA Register a virtual processor area (VPA) The code that runs in real mode has to be in the base kernel, not in the module, if KVM is compiled as a module. The real-mode code can only access the kernel linear mapping, not vmalloc or ioremap space. Signed-off-by: NPaul Mackerras <paulus@samba.org> Signed-off-by: NAlexander Graf <agraf@suse.de>
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- 26 5月, 2011 1 次提交
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由 Brian King 提交于
When page coalescing support was added recently, the MAX_HCALL_OPCODE define was not updated for the newly added H_GET_MPP_X hcall. Signed-off-by: NBrian King <brking@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 04 5月, 2011 1 次提交
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由 Brian King 提交于
Adds support for page coalescing, which is a feature on IBM Power servers which allows for coalescing identical pages between logical partitions. Hint text pages as coalesce candidates, since they are the most likely pages to be able to be coalesced between partitions. This patch also exports some page coalescing statistics available from firmware via lparcfg. [BenH: Moved a couple of things around to fix compile problems] Signed-off-by: NBrian King <brking@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 31 3月, 2011 1 次提交
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由 Lucas De Marchi 提交于
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: NLucas De Marchi <lucas.demarchi@profusion.mobi>
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- 29 11月, 2010 2 次提交
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由 Jesse Larrew 提交于
This simple patch adds the firmware feature for VPHN to the firmware features bitmask. Signed-off-by: NJesse Larrew <jlarrew@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Vaidyanathan Srinivasan 提交于
Create sysfs interface to export data from H_BEST_ENERGY hcall that can be used by administrative tools on supported pseries platforms for energy management optimizations. sys/device/system/cpu/pseries_(de)activate_hint_list and sys/device/system/cpu/cpuN/pseries_(de)activate_hint will provide hints for activation and deactivation of cpus respectively. These hints are abstract number given by the hypervisor based on the extended knowledge the hypervisor has regarding the system topology and resource mappings. The activate and the deactivate sysfs entry is for the two distinct operations that we could do for energy savings. When we have more capacity than required, we could deactivate few core to save energy. The choice of the core to deactivate will be based on /sys/devices/system/cpu/deactivate_hint_list. The comma separated list of cpus (cores) will be the preferred choice. If we have to activate some of the deactivated cores, then /sys/devices/system/cpu/activate_hint_list will be used. The per-cpu file /sys/device/system/cpu/cpuN/pseries_(de)activate_hint further provide more fine grain information by exporting the value of the hint itself. Added new driver module arch/powerpc/platforms/pseries/pseries_energy.c under new config option CONFIG_PSERIES_ENERGY Signed-off-by: NVaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 09 7月, 2010 1 次提交
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由 Brian King 提交于
Partition hibernation will use some of the same code as is currently used for Live Partition Migration. This function further abstracts this code such that code outside of rtas.c can utilize it. It also changes the error field in the suspend me data structure to be an atomic type, since it is set and checked on different cpus without any barriers or locking. Signed-off-by: NBrian King <brking@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 21 5月, 2010 1 次提交
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由 Michael Neuling 提交于
This adds plpar_pte_read_4_raw() which can be used read 4 PTEs from PHYP at a time, while in real mode. It also creates a new hcall9 which can be used in real mode. It's the same as plpar_hcall9 but minus the tracing hcall statistics which may require variables outside the RMO. Signed-off-by: NMichael Neuling <mikey@neuling.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 07 4月, 2010 1 次提交
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由 Vaidyanathan Srinivasan 提交于
Add support for H_EM_GET_PARMS hcall that will return data related to power modes from the platform. Export the data directly to user space for administrative tools to interpret and use. cat /proc/powerpc/lparcfg will export power mode data Signed-off-by: NVaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 24 11月, 2009 1 次提交
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由 Anton Blanchard 提交于
Move ehea hcall definitions into hvcall.h. Signed-off-by: NAnton Blanchard <anton@samba.org> Acked-by: NThomas Klein <tklein@de.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 28 10月, 2009 1 次提交
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由 Anton Blanchard 提交于
Add hcall_entry and hcall_exit tracepoints. This replaces the inline assembly HCALL_STATS code and converts it to use the new tracepoints. To keep the disabled case as quick as possible, we embed a status word in the TOC so we can get at it with a single load. By doing so we keep the overhead at a minimum. Time taken for a null hcall: No tracepoint code: 135.79 cycles Disabled tracepoints: 137.95 cycles For reference, before this patch enabling HCALL_STATS resulted in a null hcall of 201.44 cycles! Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 18 8月, 2008 1 次提交
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由 Robert Jennings 提交于
During platform setup, save off the primary/secondary paging space pool IDs and the page size. Added accessors in hvcall.h for these variables. This is needed for a subsequent fix. Submitted-by: NRobert Jennings <rcj@linux.vnet.ibm.com> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 04 8月, 2008 1 次提交
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由 Stephen Rothwell 提交于
from include/asm-powerpc. This is the result of a mkdir arch/powerpc/include/asm git mv include/asm-powerpc/* arch/powerpc/include/asm Followed by a few documentation/comment fixups and a couple of places where <asm-powepc/...> was being used explicitly. Of the latter only one was outside the arch code and it is a driver only built for powerpc. Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 25 7月, 2008 2 次提交
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由 Brian King 提交于
Newer versions of firmware support page states, which are used by the collaborative memory manager (future patch) to "loan" pages to the hypervisor for use by other partitions. Signed-off-by: NBrian King <brking@linux.vnet.ibm.com> Signed-off-by: NRobert Jennings <rcj@linux.vnet.ibm.com> Acked-by: NPaul Mackerras <paulus@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Nathan Fontenot 提交于
Update /proc/ppc64/lparcfg to display Cooperative Memory Overcommitment statistics as reported by the H_GET_MPP hcall. This also updates the lparcfg interface to allow setting memory entitlement and weight. Signed-off-by: NNathan Fontenot <nfont@austin.ibm.com> Signed-off-by: NRobert Jennings <rcj@linux.vnet.ibm.com> Acked-by: NPaul Mackerras <paulus@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 11 7月, 2007 1 次提交
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由 Brian King 提交于
Adds the number for the H_ILLAN_ATTRIBUTES hcall. Signed-off-by: NBrian King <brking@linux.vnet.ibm.com> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 22 3月, 2007 1 次提交
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由 Mohan Kumar M 提交于
kexec invokes plpar_hcall hypervisor call in real mode. plpar_hcall refers to per cpu variables for accounting hypervisor statistics. These variables may not be in the RMO region, so accesses to them in real mode may result in a data storage exception. This fixes this problem by using a new plpar_hcall_raw function which does not update the hypervisor call statistics. Thanks to Anton for suggesting this idea. Signed-off-by: NMohan Kumar M <mohan@in.ibm.com> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 07 2月, 2007 1 次提交
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由 Paul Mackerras 提交于
H_BULK_REMOVE lets us remove 4 entries from the MMU hash table with one hypervisor call. This uses it in pSeries_lpar_hpte_invalidate so we can tear down mappings with fewer hypervisor calls. Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 09 1月, 2007 1 次提交
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由 Anton Blanchard 提交于
There were a few issues with the HCALL_STATS code: - PURR cpu feature checks were backwards - We iterated one entry off the end of the hcall_stats array - Remove dead update_hcall_stats() function prototype I noticed one thing while debugging, and that is we call H_ENTER (to set up the MMU hashtable in early init) before we have done the cpu fixups. This means we will execute the PURR SPR reads even on a CPU that isnt capable of it. I wonder if we can move the CPU feature fixups earlier. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 13 9月, 2006 1 次提交
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由 Mike Kravetz 提交于
Add instrumentation for hypervisor calls on pseries. Call statistics include number of calls, wall time and cpu cycles (if available) and are made available via debugfs. Instrumentation code is behind the HCALL_STATS config option and has no impact if not enabled. Signed-off-by: NMike Kravetz <kravetz@us.ibm.com> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 01 8月, 2006 1 次提交
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由 Anton Blanchard 提交于
Our pseries hcall interfaces are out of control: plpar_hcall_norets plpar_hcall plpar_hcall_8arg_2ret plpar_hcall_4out plpar_hcall_7arg_7ret plpar_hcall_9arg_9ret Create 3 interfaces to cover all cases: plpar_hcall_norets: 7 arguments no returns plpar_hcall: 6 arguments 4 returns plpar_hcall9: 9 arguments 9 returns There are only 2 cases in the kernel that need plpar_hcall9, hopefully we can keep it that way. Pass in a buffer to stash return parameters so we avoid the &dummy1, &dummy2 madness. Signed-off-by: NAnton Blanchard <anton@samba.org> -- Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 31 7月, 2006 1 次提交
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由 Mike Kravetz 提交于
Move all the Hypervisor call definitions to to a single header file. Signed-off-by: NMike Kravetz <kravetz@us.ibm.com> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 15 6月, 2006 1 次提交
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由 Dave C Boutcher 提交于
Currently the kernel blindly halts all the processors and calls the ibm,suspend-me rtas call. If the firmware is not in the correct state, we then re-start all the processors and return. It is much smarter to first check the firmware state, and only if it is waiting, call the ibm,suspend-me call. Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 01 4月, 2006 2 次提交
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由 Heiko J Schick 提交于
This extends the HCALL interface for InfiniBand usage. I've made the patch against the linux-2.6 git tree and Segher's patch: [PATCH] Change H_StudlyCaps to H_SHOUTING_CAPS We moved this into the common powerpc code based on comments we got after posting the first eHCA InfiniBand device driver patch. Signed-off-by: NHeiko j Schick <schickhj@de.ibm.com> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Segher Boessenkool 提交于
Also cleans up some nearby whitespace problems. Signed-off-by: NSegher Boessenkool <segher@kernel.crashing.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 27 3月, 2006 1 次提交
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由 Paul Mackerras 提交于
Since pSeries only wants to do something different in the idle loop when there is no work to do, we can simplify the code by implementing ppc_md.power_save functions instead of complete idle loops. There are two versions: one for shared-processor partitions and one for dedicated- processor partitions. With this we also do a cede_processor() call on dedicated processor partitions if the poll_pending() call indicates that the hypervisor has work it wants to do. Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 13 1月, 2006 1 次提交
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由 Dave C Boutcher 提交于
Adds a few more hypervisor call constants. Signed-off-by: NDave Boutcher <sleddog@us.ibm.com> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 09 1月, 2006 1 次提交
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由 Arnd Bergmann 提交于
include/asm-ppc/ had #ifdef __KERNEL__ in all header files that are not meant for use by user space, include/asm-powerpc does not have this yet. This patch gets us a lot closer there. There are a few cases where I was not sure, so I left them out. I have verified that no CONFIG_* symbols are used outside of __KERNEL__ any more and that there are no obvious compile errors when including any of the headers in user space libraries. Signed-off-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 10 11月, 2005 1 次提交
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由 David Gibson 提交于
This patch moves a bunch more files from arch/ppc64 and include/asm-ppc64 which have no equivalents in ppc32 code into arch/powerpc and include/asm-powerpc. The file affected are: hvcall.h proc_ppc64.c sysfs.c lparcfg.c rtas_pci.c The only changes apart from the move and corresponding Makefile changes are: - #ifndef/#define in includes updated to _ASM_POWERPC_ form - trailing whitespace removed - comments giving full paths removed Built and booted on POWER5 LPAR (ARCH=powerpc and ARCH=ppc64), built for 32-bit powermac (ARCH=powerpc). Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 12 9月, 2005 1 次提交
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由 Anton Blanchard 提交于
Add hardware data breakpoint support. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 17 4月, 2005 1 次提交
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由 Linus Torvalds 提交于
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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