search for: hcall

...ack = CDR(list); strncpy(buf, localbuf, BUFSIZE - 1); /* Rvsnprintf(buf, BUFSIZE - 1, format, ap);*/ buf[BUFSIZE - 1] = 0; if (IS_CALLING_ENTRY(entry)) { if (ENTRY_HANDLER(entry) == R_RestartToken) return; /* go to default error handling; do not reset stack */ else { SEXP hooksym, hcall, qcall; /* protect oldstack here, not outside loop, so handler stack gets unwound in case error is protect stack overflow */ PROTECT(oldstack); hooksym = install(".handleSimpleError"); PROTECT(qcall = LCONS(R_QuoteSymbol, LCONS(call, R_NilValue))); PROTECT(hc...

...ar lgstart_cli[], lgend_cli[]; +extern const char lgstart_sti[], lgend_sti[]; +extern const char lgstart_popf[], lgend_popf[]; +extern const char lgstart_pushf[], lgend_pushf[]; +extern const char lgstart_iret[], lgend_iret[]; +extern void lguest_iret(void); + +struct lguest_data lguest_data = { + .hcall_status = { [0 ... LHCALL_RING_SIZE-1] = 0xFF }, + .noirq_start = (u32)lguest_noirq_start, + .noirq_end = (u32)lguest_noirq_end, + .blocked_interrupts = { 1 }, /* Block timer interrupts */ +}; +struct lguest_device_desc *lguest_devices; +static __initdata const struct lguest_boot_info *boot = __va(0...

...ar lgstart_cli[], lgend_cli[]; +extern const char lgstart_sti[], lgend_sti[]; +extern const char lgstart_popf[], lgend_popf[]; +extern const char lgstart_pushf[], lgend_pushf[]; +extern const char lgstart_iret[], lgend_iret[]; +extern void lguest_iret(void); + +struct lguest_data lguest_data = { + .hcall_status = { [0 ... LHCALL_RING_SIZE-1] = 0xFF }, + .noirq_start = (u32)lguest_noirq_start, + .noirq_end = (u32)lguest_noirq_end, + .blocked_interrupts = { 1 }, /* Block timer interrupts */ +}; +struct lguest_device_desc *lguest_devices; +static __initdata const struct lguest_boot_info *boot = __va(0...

As promised to Andrew, and with much thanks to Andi Kleen for feedback, this is the new series of lguest patches. Main change is the move to drivers/lguest (for future non-i386 expansion), but lots of cleanups driven by Andi's feedback and the documentation effort (which made me examine every line of code). It's not perfect, but it's definitely useful. Cheers, Rusty. List of

As promised to Andrew, and with much thanks to Andi Kleen for feedback, this is the new series of lguest patches. Main change is the move to drivers/lguest (for future non-i386 expansion), but lots of cleanups driven by Andi's feedback and the documentation effort (which made me examine every line of code). It's not perfect, but it's definitely useful. Cheers, Rusty. List of

...t.c Thu May 31 16:34:17 2007 +1000 +++ b/drivers/lguest/lguest.c Thu May 31 16:36:23 2007 +1000 @@ -58,9 +58,10 @@ static enum paravirt_lazy_mode lazy_mode static enum paravirt_lazy_mode lazy_mode; static void lguest_lazy_mode(enum paravirt_lazy_mode mode) { - if (mode == PARAVIRT_LAZY_FLUSH) - hcall(LHCALL_FLUSH_ASYNC, 0, 0, 0); - else { + if (mode == PARAVIRT_LAZY_FLUSH) { + if (unlikely(lazy_mode != PARAVIRT_LAZY_NONE)) + hcall(LHCALL_FLUSH_ASYNC, 0, 0, 0); + } else { lazy_mode = mode; if (mode == PARAVIRT_LAZY_NONE) hcall(LHCALL_FLUSH_ASYNC, 0, 0, 0);

...t.c Thu May 31 16:34:17 2007 +1000 +++ b/drivers/lguest/lguest.c Thu May 31 16:36:23 2007 +1000 @@ -58,9 +58,10 @@ static enum paravirt_lazy_mode lazy_mode static enum paravirt_lazy_mode lazy_mode; static void lguest_lazy_mode(enum paravirt_lazy_mode mode) { - if (mode == PARAVIRT_LAZY_FLUSH) - hcall(LHCALL_FLUSH_ASYNC, 0, 0, 0); - else { + if (mode == PARAVIRT_LAZY_FLUSH) { + if (unlikely(lazy_mode != PARAVIRT_LAZY_NONE)) + hcall(LHCALL_FLUSH_ASYNC, 0, 0, 0); + } else { lazy_mode = mode; if (mode == PARAVIRT_LAZY_NONE) hcall(LHCALL_FLUSH_ASYNC, 0, 0, 0);

1) Example code: old libc headers don't have SIOCBRADDIF, and old zlibs don't have gzdirect() -- it's a sanity check anyway. 2) Some people don't build in their source directories, so .config isn't there (thanks to Tony Breeds <tony@bakeyournoodle.com>). 3) Point out that guest and host kernel are usually the same. 4) Set the "no checksum" option on the

1) Example code: old libc headers don't have SIOCBRADDIF, and old zlibs don't have gzdirect() -- it's a sanity check anyway. 2) Some people don't build in their source directories, so .config isn't there (thanks to Tony Breeds <tony@bakeyournoodle.com>). 3) Point out that guest and host kernel are usually the same. 4) Set the "no checksum" option on the

...longs and pointers in our code (since 32-bit userland is passing structures to a 64-bit kernel). So perhaps these two fixup passes could be split: we could share the xencomm conversion in common code, and PPC arch code could contain the size munging. This is why passing complex data structures as hcall parameters will always be a bad thing. -- Hollis Blanchard IBM Linux Technology Center _______________________________________________ Xen-ppc-devel mailing list Xen-ppc-devel@lists.xensource.com http://lists.xensource.com/xen-ppc-devel

This patch modifies the physinfo hcall to export NUMA CPU and Memory topology information. The new physinfo hcall is integrated into libxc and xend (xm info specifically). Included in this patch is a minor tweak to xm-test''s xm info testcase. The new fields in xm info are: nr_nodes : 4 mem_chunks :...

...> Implement a handler for #VC exceptions caused by RDMSR/WRMSR > instructions. As a general comment on all of these event handlers: Why do we bother having the hypercalls in the interrupt handler as opposed to just calling them directly. What you have is: wrmsr() -> #VC exception hcall() But we could make our rd/wrmsr() wrappers just do: if (running_on_sev_es()) hcall(HCALL_MSR_WHATEVER...) else wrmsr() and then we don't have any of the nastiness of exception handling.

...> Implement a handler for #VC exceptions caused by RDMSR/WRMSR > instructions. As a general comment on all of these event handlers: Why do we bother having the hypercalls in the interrupt handler as opposed to just calling them directly. What you have is: wrmsr() -> #VC exception hcall() But we could make our rd/wrmsr() wrappers just do: if (running_on_sev_es()) hcall(HCALL_MSR_WHATEVER...) else wrmsr() and then we don't have any of the nastiness of exception handling.

...nding helper functions to support pv-qspinlock. > > For normal use, __spin_yield_cpu will confer current vcpu slices to the > target vcpu(say, a lock holder). If target vcpu is not specified or it > is in running state, such conferging to lpar happens or not depends. > > Because hcall itself will introduce latency and a little overhead. And we > do NOT want to suffer any latency on some cases, e.g. in interrupt handler. > The second parameter *confer* can indicate such case. > > __spin_wake_cpu is simpiler, it will wake up one vcpu regardless of its > current vcp...

...nding helper functions to support pv-qspinlock. > > For normal use, __spin_yield_cpu will confer current vcpu slices to the > target vcpu(say, a lock holder). If target vcpu is not specified or it > is in running state, such conferging to lpar happens or not depends. > > Because hcall itself will introduce latency and a little overhead. And we > do NOT want to suffer any latency on some cases, e.g. in interrupt handler. > The second parameter *confer* can indicate such case. > > __spin_wake_cpu is simpiler, it will wake up one vcpu regardless of its > current vcp...

The netfilter code had very good documentation: the Netfilter Hacking HOWTO. Noone ever read it. So this time I'm trying something different, using a bit of Knuthiness. Start with drivers/lguest/README. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> --- Documentation/lguest/extract | 58 +++++++++++++++++++++++++++++++++ Documentation/lguest/lguest.c | 9

The netfilter code had very good documentation: the Netfilter Hacking HOWTO. Noone ever read it. So this time I'm trying something different, using a bit of Knuthiness. Start with drivers/lguest/README. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> --- Documentation/lguest/extract | 58 +++++++++++++++++++++++++++++++++ Documentation/lguest/lguest.c | 9

The netfilter code had very good documentation: the Netfilter Hacking HOWTO. Noone ever read it. So this time I'm trying something different, using a bit of Knuthiness. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> --- Documentation/lguest/extract | 58 +++++++++++++++++++++++++++++++++ Documentation/lguest/lguest.c | 9 +++-- drivers/lguest/Makefile

The netfilter code had very good documentation: the Netfilter Hacking HOWTO. Noone ever read it. So this time I'm trying something different, using a bit of Knuthiness. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> --- Documentation/lguest/extract | 58 +++++++++++++++++++++++++++++++++ Documentation/lguest/lguest.c | 9 +++-- drivers/lguest/Makefile

...t;bad trapnum %lld\n", regs->trapnum); + lguest_dump_vcpu_regs(vcpu); + return -EINVAL; + } + } + return -ENOENT; +} + +extern long end_hyper_text; +extern long start_hyper_text; + +static int __init init(void) +{ + unsigned long pages; + unsigned long hvaddr; +#if 0 + unsigned long lg_hcall = (unsigned long)HV_OFFSET(&hcall_teste); + unsigned long *lg_host_syscall = + (unsigned long *)HV_OFFSET(&host_syscall); +#endif + int order; + int ret; + + int i; + printk("start_hyper_text=%p\n",&start_hyper_text); + printk("end_hyper_text=%p\n",&end_hyper_...