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libxl: add API wrapper for libxl_domain_need_memory

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Upcoming changes will use different LIBXL_API_VERSION variants.

Prepare libxl_domain_need_memory, which changed the storage size of
"need_memkb" in Xen 4.8. With Xen 4.12 the libxl_domain_config
parameter was changed

No functional change intended.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
This commit is contained in:
Olaf Hering 2021-03-25 17:26:07 +01:00 committed by Jim Fehlig
parent 9960337cd6
commit 0acd258e2e
2 changed files with 26 additions and 2 deletions
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24
src/libxl/libxl_api_wrapper.h
View File

@ -114,3 +114,27 @@ libxlDomainUnpauseWrapper(libxl_ctx *ctx, uint32_t domid)
return ret;
}
#define INVALID_DOMID ~0
static inline int
libxlDomainNeedMemoryWrapper(libxl_ctx *ctx,
libxl_domain_config *d_config,
uint64_t *need_memkb)
{
int ret;
#if LIBXL_API_VERSION < 0x040800
{
uint32_t val32 = 0;
ret = libxl_domain_need_memory(ctx, &d_config->b_info, &val32);
*need_memkb = val32;
}
#elif LIBXL_API_VERSION < 0x041300
ret = libxl_domain_need_memory(ctx, &d_config->b_info, need_memkb);
#else
ret = libxl_domain_need_memory(ctx, d_config, INVALID_DOMID, need_memkb);
#endif
return ret;
}

4
src/libxl/libxl_domain.c
View File

@ -1008,13 +1008,13 @@ libxlDomainSetVcpuAffinities(libxlDriverPrivatePtr driver, virDomainObjPtr vm)
static int
libxlDomainFreeMem(libxl_ctx *ctx, libxl_domain_config *d_config)
{
uint32_t needed_mem;
uint64_t needed_mem;
uint32_t free_mem;
int32_t target_mem;
int tries = 3;
int wait_secs = 10;
if (libxl_domain_need_memory(ctx, &d_config->b_info, &needed_mem) < 0)
if (libxlDomainNeedMemoryWrapper(ctx, d_config, &needed_mem) < 0)
goto error;
do {