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softmmu: Create qemu_target_pages_to_MiB()

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Function that convert a number of target_pages into its size in MiB.

Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20230511141208.17779-2-quintela@redhat.com>
This commit is contained in:
Juan Quintela 2023-05-11 16:12:04 +02:00
parent 00a3f9c60a
commit 62c5e181ee
2 changed files with 12 additions and 0 deletions
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1
include/exec/target_page.h
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@ -18,4 +18,5 @@ size_t qemu_target_page_size(void);
int qemu_target_page_bits(void); int qemu_target_page_bits(void);
int qemu_target_page_bits_min(void); int qemu_target_page_bits_min(void);
size_t qemu_target_pages_to_MiB(size_t pages);
#endif #endif

11
softmmu/physmem.c
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@ -3357,6 +3357,17 @@ int qemu_target_page_bits_min(void)
return TARGET_PAGE_BITS_MIN; return TARGET_PAGE_BITS_MIN;
} }
/* Convert target pages to MiB (2**20). */
size_t qemu_target_pages_to_MiB(size_t pages)
{
int page_bits = TARGET_PAGE_BITS;
/* So far, the largest (non-huge) page size is 64k, i.e. 16 bits. */
g_assert(page_bits < 20);
return pages >> (20 - page_bits);
}
bool cpu_physical_memory_is_io(hwaddr phys_addr) bool cpu_physical_memory_is_io(hwaddr phys_addr)
{ {
MemoryRegion*mr; MemoryRegion*mr;