Commit db9492ce authored by Vasily Gorbik's avatar Vasily Gorbik Committed by Martin Schwidefsky

s390/protvirt: add memory sharing for diag 308 set/store

Add sharing of ipl parameter block for diag 308 set/store calls to allow
kvm access in protected virtualization environment.
Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 5abb9351
...@@ -7,6 +7,7 @@ ...@@ -7,6 +7,7 @@
#include <asm/sections.h> #include <asm/sections.h>
#include <asm/boot_data.h> #include <asm/boot_data.h>
#include <asm/facility.h> #include <asm/facility.h>
#include <asm/uv.h>
#include "boot.h" #include "boot.h"
char __bootdata(early_command_line)[COMMAND_LINE_SIZE]; char __bootdata(early_command_line)[COMMAND_LINE_SIZE];
...@@ -45,7 +46,9 @@ void store_ipl_parmblock(void) ...@@ -45,7 +46,9 @@ void store_ipl_parmblock(void)
{ {
int rc; int rc;
uv_set_shared(__pa(&ipl_block));
rc = __diag308(DIAG308_STORE, &ipl_block); rc = __diag308(DIAG308_STORE, &ipl_block);
uv_remove_shared(__pa(&ipl_block));
if (rc == DIAG308_RC_OK && if (rc == DIAG308_RC_OK &&
ipl_block.hdr.version <= IPL_MAX_SUPPORTED_VERSION) ipl_block.hdr.version <= IPL_MAX_SUPPORTED_VERSION)
ipl_block_valid = 1; ipl_block_valid = 1;
......
...@@ -31,6 +31,7 @@ ...@@ -31,6 +31,7 @@
#include <asm/os_info.h> #include <asm/os_info.h>
#include <asm/sections.h> #include <asm/sections.h>
#include <asm/boot_data.h> #include <asm/boot_data.h>
#include <asm/uv.h>
#include "entry.h" #include "entry.h"
#define IPL_PARM_BLOCK_VERSION 0 #define IPL_PARM_BLOCK_VERSION 0
...@@ -863,15 +864,21 @@ static void __reipl_run(void *unused) ...@@ -863,15 +864,21 @@ static void __reipl_run(void *unused)
{ {
switch (reipl_type) { switch (reipl_type) {
case IPL_TYPE_CCW: case IPL_TYPE_CCW:
uv_set_shared(__pa(reipl_block_ccw));
diag308(DIAG308_SET, reipl_block_ccw); diag308(DIAG308_SET, reipl_block_ccw);
uv_remove_shared(__pa(reipl_block_ccw));
diag308(DIAG308_LOAD_CLEAR, NULL); diag308(DIAG308_LOAD_CLEAR, NULL);
break; break;
case IPL_TYPE_FCP: case IPL_TYPE_FCP:
uv_set_shared(__pa(reipl_block_fcp));
diag308(DIAG308_SET, reipl_block_fcp); diag308(DIAG308_SET, reipl_block_fcp);
uv_remove_shared(__pa(reipl_block_fcp));
diag308(DIAG308_LOAD_CLEAR, NULL); diag308(DIAG308_LOAD_CLEAR, NULL);
break; break;
case IPL_TYPE_NSS: case IPL_TYPE_NSS:
uv_set_shared(__pa(reipl_block_nss));
diag308(DIAG308_SET, reipl_block_nss); diag308(DIAG308_SET, reipl_block_nss);
uv_remove_shared(__pa(reipl_block_nss));
diag308(DIAG308_LOAD_CLEAR, NULL); diag308(DIAG308_LOAD_CLEAR, NULL);
break; break;
case IPL_TYPE_UNKNOWN: case IPL_TYPE_UNKNOWN:
...@@ -1142,7 +1149,9 @@ static struct kset *dump_kset; ...@@ -1142,7 +1149,9 @@ static struct kset *dump_kset;
static void diag308_dump(void *dump_block) static void diag308_dump(void *dump_block)
{ {
uv_set_shared(__pa(dump_block));
diag308(DIAG308_SET, dump_block); diag308(DIAG308_SET, dump_block);
uv_remove_shared(__pa(dump_block));
while (1) { while (1) {
if (diag308(DIAG308_LOAD_NORMAL_DUMP, NULL) != 0x302) if (diag308(DIAG308_LOAD_NORMAL_DUMP, NULL) != 0x302)
break; break;
......
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