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| author | Janosch Frank <frankja@linux.ibm.com> | 2023-08-15 14:43:31 -0400 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2023-08-18 15:09:29 +0200 |
| commit | cf3fa16a6fd49216ae83502e61bea0d8322b51eb (patch) | |
| tree | 89194ffb13d58c7a20d5b1f9d4746fe46d24e858 /arch | |
| parent | 7847a19b5b6265f11e71c8499a3b608edac7f398 (diff) | |
| download | lwn-cf3fa16a6fd49216ae83502e61bea0d8322b51eb.tar.gz lwn-cf3fa16a6fd49216ae83502e61bea0d8322b51eb.zip | |
s390/uv: export uv_pin_shared for direct usage
Export the uv_pin_shared function so that it can be called from other
modules that carry a GPL-compatible license.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com>
Tested-by: Viktor Mihajlovski <mihajlov@linux.ibm.com>
Link: https://lore.kernel.org/r/20230815184333.6554-11-akrowiak@linux.ibm.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/include/asm/uv.h | 6 | ||||
| -rw-r--r-- | arch/s390/kernel/uv.c | 3 |
2 files changed, 8 insertions, 1 deletions
diff --git a/arch/s390/include/asm/uv.h b/arch/s390/include/asm/uv.h index d6bb2f4f78d1..d2cd42bb2c26 100644 --- a/arch/s390/include/asm/uv.h +++ b/arch/s390/include/asm/uv.h @@ -463,6 +463,7 @@ static inline int is_prot_virt_host(void) return prot_virt_host; } +int uv_pin_shared(unsigned long paddr); int gmap_make_secure(struct gmap *gmap, unsigned long gaddr, void *uvcb); int gmap_destroy_page(struct gmap *gmap, unsigned long gaddr); int uv_destroy_owned_page(unsigned long paddr); @@ -475,6 +476,11 @@ void setup_uv(void); #define is_prot_virt_host() 0 static inline void setup_uv(void) {} +static inline int uv_pin_shared(unsigned long paddr) +{ + return 0; +} + static inline int uv_destroy_owned_page(unsigned long paddr) { return 0; diff --git a/arch/s390/kernel/uv.c b/arch/s390/kernel/uv.c index 66f0eb1c872b..b771f1b4cdd1 100644 --- a/arch/s390/kernel/uv.c +++ b/arch/s390/kernel/uv.c @@ -88,7 +88,7 @@ fail: * Requests the Ultravisor to pin the page in the shared state. This will * cause an intercept when the guest attempts to unshare the pinned page. */ -static int uv_pin_shared(unsigned long paddr) +int uv_pin_shared(unsigned long paddr) { struct uv_cb_cfs uvcb = { .header.cmd = UVC_CMD_PIN_PAGE_SHARED, @@ -100,6 +100,7 @@ static int uv_pin_shared(unsigned long paddr) return -EINVAL; return 0; } +EXPORT_SYMBOL_GPL(uv_pin_shared); /* * Requests the Ultravisor to destroy a guest page and make it |