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accel/hax: Introduce CONFIG_HAX_IS_POSSIBLE

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Mirror "sysemu/kvm.h" #ifdef'ry to define CONFIG_HAX_IS_POSSIBLE,
expose hax_allowed to hax_enabled() macro.

Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220207075426.81934-9-f4bug@amsat.org>
This commit is contained in:
Philippe Mathieu-Daudé 2022-02-03 13:16:58 +01:00
parent f94bee49d2
commit b04363c240
3 changed files with 15 additions and 12 deletions
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2
accel/stubs/hax-stub.c
View file

@ -16,6 +16,8 @@
#include "qemu/osdep.h"
#include "sysemu/hax.h"
bool hax_allowed;
int hax_sync_vcpus(void)
{
return 0;

18
include/sysemu/hax.h
View file

@ -25,17 +25,23 @@
int hax_sync_vcpus(void);
#ifdef NEED_CPU_H
# ifdef CONFIG_HAX
# define CONFIG_HAX_IS_POSSIBLE
# endif
#else /* !NEED_CPU_H */
# define CONFIG_HAX_IS_POSSIBLE
#endif
#ifdef CONFIG_HAX
#ifdef CONFIG_HAX_IS_POSSIBLE
int hax_enabled(void);
extern bool hax_allowed;
#else /* CONFIG_HAX */
#define hax_enabled() (hax_allowed)
#define hax_enabled() (0)
#else /* !CONFIG_HAX_IS_POSSIBLE */
#endif /* CONFIG_HAX */
#define hax_enabled() (0)
#endif /* NEED_CPU_H */
#endif /* CONFIG_HAX_IS_POSSIBLE */
#endif /* QEMU_HAX_H */

7
target/i386/hax/hax-all.c
View file

@ -49,18 +49,13 @@ const uint32_t hax_cur_version = 0x4; /* API v4: unmapping and MMIO moves */
/* Minimum HAX kernel version */
const uint32_t hax_min_version = 0x4; /* API v4: supports unmapping */
static bool hax_allowed;
bool hax_allowed;
struct hax_state hax_global;
static void hax_vcpu_sync_state(CPUArchState *env, int modified);
static int hax_arch_get_registers(CPUArchState *env);
int hax_enabled(void)
{
return hax_allowed;
}
int valid_hax_tunnel_size(uint16_t size)
{
return size >= sizeof(struct hax_tunnel);