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page-vary: Build set_preferred_target_page_bits as common code

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Use target_info->page_bits_vary to merge
set_preferred_target_page_bits_common into
set_preferred_target_page_bits in page-vary-common.c.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20260217095106.598486-5-richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
This commit is contained in:
Richard Henderson
2026-02-17 19:51:03 +10:00
committed by Philippe Mathieu-Daudé
parent bd2ecc733a
commit 79674d07d4
3 changed files with 18 additions and 22 deletions
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1
include/exec/page-vary.h
View File

@@ -41,7 +41,6 @@ typedef struct {
} TargetPageBits;
#ifdef IN_PAGE_VARY
bool set_preferred_target_page_bits_common(int bits);
void finalize_target_page_bits_common(int min);
#endif

29
page-vary-common.c
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@@ -20,25 +20,32 @@
#define IN_PAGE_VARY 1
#include "qemu/osdep.h"
#include "qemu/target-info-impl.h"
#include "exec/page-vary.h"
/* WARNING: This file must *not* be complied with -flto. */
TargetPageBits target_page;
bool set_preferred_target_page_bits_common(int bits)
bool set_preferred_target_page_bits(int bits)
{
/*
* The target page size is the lowest common denominator for all
* the CPUs in the system, so we can only make it smaller, never
* larger. And we can't make it smaller once we've committed to
* a particular size.
*/
if (target_page.bits == 0 || target_page.bits > bits) {
if (target_page.decided) {
return false;
const TargetInfo *ti = target_info();
assert(bits >= TARGET_PAGE_BITS_MIN);
if (ti->page_bits_vary) {
/*
* The target page size is the lowest common denominator for all
* the CPUs in the system, so we can only make it smaller, never
* larger. And we can't make it smaller once we've committed to
* a particular size.
*/
if (target_page.bits == 0 || target_page.bits > bits) {
if (target_page.decided) {
return false;
}
target_page.bits = bits;
}
target_page.bits = bits;
}
return true;
}

10
page-vary-target.c
View File

@@ -39,16 +39,6 @@ int migration_legacy_page_bits(void)
}
#endif
bool set_preferred_target_page_bits(int bits)
{
assert(bits >= TARGET_PAGE_BITS_MIN);
#ifdef TARGET_PAGE_BITS_VARY
return set_preferred_target_page_bits_common(bits);
#else
return true;
#endif
}
void finalize_target_page_bits(void)
{
#ifndef TARGET_PAGE_BITS_VARY