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s390x: introduce s390_get_memory_limit()

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Let's add s390_get_memory_limit(), to query what has been successfully
set via s390_set_memory_limit(). Allow setting the limit only once.

We'll remember the limit in the machine state. Move
s390_set_memory_limit() to machine code, merging it into
set_memory_limit(), because this really is a machine property.

Message-ID: <20241219144115.2820241-7-david@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
This commit is contained in:
David Hildenbrand 2024-12-19 15:41:07 +01:00
parent 3c6fb557d2
commit 27221b69a3
4 changed files with 20 additions and 14 deletions
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8
target/s390x/cpu-sysemu.c
View file

@ -255,14 +255,6 @@ unsigned int s390_cpu_set_state(uint8_t cpu_state, S390CPU *cpu)
return s390_count_running_cpus();
}
int s390_set_memory_limit(uint64_t new_limit, uint64_t *hw_limit)
{
if (kvm_enabled()) {
return kvm_s390_set_mem_limit(new_limit, hw_limit);
}
return 0;
}
void s390_set_max_pagesize(uint64_t pagesize, Error **errp)
{
if (kvm_enabled()) {

1
target/s390x/cpu.h
View file

@ -881,7 +881,6 @@ static inline void s390_do_cpu_load_normal(CPUState *cs, run_on_cpu_data arg)
/* cpu.c */
void s390_crypto_reset(void);
int s390_set_memory_limit(uint64_t new_limit, uint64_t *hw_limit);
void s390_set_max_pagesize(uint64_t pagesize, Error **errp);
void s390_cmma_reset(void);
void s390_enable_css_support(S390CPU *cpu);