On Tue, 20 Mar 2007 19:05:47 +0530 Mohan Kumar M wrote: > Cc: Anton Blanchard <[EMAIL PROTECTED]> > Signed-off-by: Mohan Kumar M <[EMAIL PROTECTED]> > --- > arch/powerpc/platforms/pseries/hvCall.S | 34 > ++++++++++++++++++++++++ > arch/powerpc/platforms/pseries/lpar.c | 2 - > arch/powerpc/platforms/pseries/plpar_wrappers.h | 19 +++++++++++++ > include/asm-powerpc/hvcall.h | 15 ++++++++++ > 4 files changed, 69 insertions(+), 1 deletion(-) > > Index: linux-2.6.21-rc4/arch/powerpc/platforms/pseries/hvCall.S > =================================================================== > --- linux-2.6.21-rc4.orig/arch/powerpc/platforms/pseries/hvCall.S > +++ linux-2.6.21-rc4/arch/powerpc/platforms/pseries/hvCall.S > @@ -123,6 +123,40 @@ _GLOBAL(plpar_hcall) > > blr /* return r3 = status */ > > + > +/* plpar_hcall_raw can be called in real mode. kexec/kdump need some > + * hypervisor calls to be executed in real mode. So plpar_hcall_raw > + * does not access the per cpu hypervisor call statistics variables, > + * since these variables may not be present in the RMO region. > + */
Hi, Please use regular kernel long comment style (when not using kernel-doc). E.g.: /* * foo * bar * this is a long comment (several lines) */ > +_GLOBAL(plpar_hcall_raw) > + HMT_MEDIUM > + > + mfcr r0 > + stw r0,8(r1) > + > + std r4,STK_PARM(r4)(r1) /* Save ret buffer */ > + > + mr r4,r5 > + mr r5,r6 > + mr r6,r7 > + mr r7,r8 > + mr r8,r9 > + mr r9,r10 > + > + HVSC /* invoke the hypervisor */ > + > + ld r12,STK_PARM(r4)(r1) > + std r4, 0(r12) > + std r5, 8(r12) > + std r6, 16(r12) > + std r7, 24(r12) > + > + lwz r0,8(r1) > + mtcrf 0xff,r0 > + > + blr /* return r3 = status */ > + > _GLOBAL(plpar_hcall9) > HMT_MEDIUM > > Index: linux-2.6.21-rc4/include/asm-powerpc/hvcall.h > =================================================================== > --- linux-2.6.21-rc4.orig/include/asm-powerpc/hvcall.h > +++ linux-2.6.21-rc4/include/asm-powerpc/hvcall.h > @@ -237,6 +237,21 @@ long plpar_hcall_norets(unsigned long op > long plpar_hcall(unsigned long opcode, unsigned long *retbuf, ...); > > /** > + * plpar_hcall_raw: - Make a pseries hypervisor call, but don't calculate > + * hypervisor call statistics. For kernel-doc, the first line must be: * function - short description (one line only) More detailed description can follow the parameters (like you have done below). > + * @opcode: The hypervisor call to make. > + * @retbuf: Buffer to store up to 4 return arguments in. > + * > + * This call supports up to 6 arguments and 4 return arguments. Use > + * PLPAR_HCALL_BUFSIZE to size the return argument buffer. > + * > + * Used when phyp interface needs to be called in real mode. Similar to > + * plpar_hcall, but plpar_hcall_raw works in real mode and does not > + * calculate hypervisor call statistics. > + */ > +long plpar_hcall_raw(unsigned long opcode, unsigned long *retbuf, ...); > + > +/** > * plpar_hcall9: - Make a pseries hypervisor call with up to 9 return > arguments > * @opcode: The hypervisor call to make. > * @retbuf: Buffer to store up to 9 return arguments in. Thanks. --- ~Randy *** Remember to use Documentation/SubmitChecklist when testing your code *** _______________________________________________ fastboot mailing list [email protected] https://lists.linux-foundation.org/mailman/listinfo/fastboot
