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| author | Vasily Gorbik <gor@linux.ibm.com> | 2019-04-01 19:11:04 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2019-04-10 17:47:22 +0200 |
| commit | db9492cef45efc347beed7b617dfdfac399f662b (patch) | |
| tree | 46ef6019d8dc54a74a021a68b288537725b294a9 /arch/s390/boot/ipl_parm.c | |
| parent | 5abb9351dfd937d43193f4d09af9c72bfe2c4180 (diff) | |
| download | linux-stable-db9492cef45efc347beed7b617dfdfac399f662b.tar.gz linux-stable-db9492cef45efc347beed7b617dfdfac399f662b.tar.bz2 linux-stable-db9492cef45efc347beed7b617dfdfac399f662b.zip | |
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: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/boot/ipl_parm.c')
| -rw-r--r-- | arch/s390/boot/ipl_parm.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/s390/boot/ipl_parm.c b/arch/s390/boot/ipl_parm.c index dc0438d08751..385d0c7a9635 100644 --- a/arch/s390/boot/ipl_parm.c +++ b/arch/s390/boot/ipl_parm.c @@ -7,6 +7,7 @@ #include <asm/sections.h> #include <asm/boot_data.h> #include <asm/facility.h> +#include <asm/uv.h> #include "boot.h" char __bootdata(early_command_line)[COMMAND_LINE_SIZE]; @@ -45,7 +46,9 @@ void store_ipl_parmblock(void) { int rc; + uv_set_shared(__pa(&ipl_block)); rc = __diag308(DIAG308_STORE, &ipl_block); + uv_remove_shared(__pa(&ipl_block)); if (rc == DIAG308_RC_OK && ipl_block.hdr.version <= IPL_MAX_SUPPORTED_VERSION) ipl_block_valid = 1; |