paravirtualize minstate.h which are hand written assembly code. They include sensitive or performance critical privileged instructions. So that they are appropriate for paravirtualization. Cc: Keith Owens <kaos@xxxxxxxxxx> Cc: Akio Takebe <takebe_akio@xxxxxxxxxxxxxx> Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@xxxxxxxxx> Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx> --- arch/ia64/kernel/minstate.h | 13 +++++++------ arch/ia64/kernel/paravirt_inst.h | 29 +++++++++++++++++++++++++++++ include/asm-ia64/native/inst.h | 2 ++ 3 files changed, 38 insertions(+), 6 deletions(-) create mode 100644 arch/ia64/kernel/paravirt_inst.h diff --git a/arch/ia64/kernel/minstate.h b/arch/ia64/kernel/minstate.h index 7c548ac..9db53cf 100644 --- a/arch/ia64/kernel/minstate.h +++ b/arch/ia64/kernel/minstate.h @@ -2,6 +2,7 @@ #include <asm/cache.h> #include "entry.h" +#include "paravirt_inst.h" #ifdef CONFIG_VIRT_CPU_ACCOUNTING /* read ar.itc in advance, and use it before leaving bank 0 */ @@ -40,16 +41,16 @@ * Note that psr.ic is NOT turned on by this macro. This is so that * we can pass interruption state as arguments to a handler. */ -#define DO_SAVE_MIN(COVER,SAVE_IFS,EXTRA) \ +#define IA64_NATIVE_DO_SAVE_MIN(__COVER,SAVE_IFS,EXTRA) \ mov r16=IA64_KR(CURRENT); /* M */ \ mov r27=ar.rsc; /* M */ \ mov r20=r1; /* A */ \ mov r25=ar.unat; /* M */ \ - mov r29=cr.ipsr; /* M */ \ + MOV_FROM_IPSR(p0,r29); /* M */ \ mov r26=ar.pfs; /* I */ \ - mov r28=cr.iip; /* M */ \ + MOV_FROM_IIP(r28); /* M */ \ mov r21=ar.fpsr; /* M */ \ - COVER; /* B;; (or nothing) */ \ + __COVER; /* B;; (or nothing) */ \ ;; \ adds r16=IA64_TASK_THREAD_ON_USTACK_OFFSET,r16; \ ;; \ @@ -206,6 +207,6 @@ st8 [r25]=r10; /* ar.ssd */ \ ;; -#define SAVE_MIN_WITH_COVER DO_SAVE_MIN(cover, mov r30=cr.ifs,) -#define SAVE_MIN_WITH_COVER_R19 DO_SAVE_MIN(cover, mov r30=cr.ifs, mov r15=r19) +#define SAVE_MIN_WITH_COVER DO_SAVE_MIN(COVER, mov r30=cr.ifs,) +#define SAVE_MIN_WITH_COVER_R19 DO_SAVE_MIN(COVER, mov r30=cr.ifs, mov r15=r19) #define SAVE_MIN DO_SAVE_MIN( , mov r30=r0, ) diff --git a/arch/ia64/kernel/paravirt_inst.h b/arch/ia64/kernel/paravirt_inst.h new file mode 100644 index 0000000..5cad6fb --- /dev/null +++ b/arch/ia64/kernel/paravirt_inst.h @@ -0,0 +1,29 @@ +/****************************************************************************** + * linux/arch/ia64/xen/paravirt_inst.h + * + * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp> + * VA Linux Systems Japan K.K. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#ifdef __IA64_ASM_PARAVIRTUALIZED_XEN +#include <asm/xen/inst.h> +#include <asm/xen/minstate.h> +#else +#include <asm/native/inst.h> +#endif + diff --git a/include/asm-ia64/native/inst.h b/include/asm-ia64/native/inst.h index 2a50b70..f1072ac 100644 --- a/include/asm-ia64/native/inst.h +++ b/include/asm-ia64/native/inst.h @@ -20,6 +20,8 @@ * */ +#define DO_SAVE_MIN IA64_NATIVE_DO_SAVE_MIN + #ifdef CONFIG_PARAVIRT_GUEST_ASM_CLOBBER_CHECK # define PARAVIRT_POISON 0xdeadbeefbaadf00d # define CLOBBER(clob) \ -- 1.5.3 _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/virtualization
