diff options
| author | Yosry Ahmed <yosryahmed@google.com> | 2024-08-05 20:12:47 +0000 |
|---|---|---|
| committer | Wei Liu <wei.liu@kernel.org> | 2024-08-23 22:26:20 +0000 |
| commit | 0b5530861eec1cf3f240a6a4a0ceed58f67fbcc5 (patch) | |
| tree | 40abb1963e34f103e3a144d6f35113d77b4f9571 | |
| parent | 87c9741a38c4fa63ff3525c3191fb8a4a69b4ff6 (diff) | |
x86/hyperv: use helpers to read control registers in hv_snp_boot_ap()
Use native_read_cr*() helpers to read control registers into vmsa->cr*
instead of open-coded assembly.
No functional change intended, unless there was a purpose to specifying
rax.
Signed-off-by: Yosry Ahmed <yosryahmed@google.com>
Link: https://lore.kernel.org/r/20240805201247.427982-1-yosryahmed@google.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Message-ID: <20240805201247.427982-1-yosryahmed@google.com>
| -rw-r--r-- | arch/x86/hyperv/ivm.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/hyperv/ivm.c b/arch/x86/hyperv/ivm.c index b4a851d27c7c..60fc3ed72830 100644 --- a/arch/x86/hyperv/ivm.c +++ b/arch/x86/hyperv/ivm.c @@ -321,9 +321,9 @@ int hv_snp_boot_ap(u32 cpu, unsigned long start_ip) vmsa->efer = native_read_msr(MSR_EFER); - asm volatile("movq %%cr4, %%rax;" : "=a" (vmsa->cr4)); - asm volatile("movq %%cr3, %%rax;" : "=a" (vmsa->cr3)); - asm volatile("movq %%cr0, %%rax;" : "=a" (vmsa->cr0)); + vmsa->cr4 = native_read_cr4(); + vmsa->cr3 = __native_read_cr3(); + vmsa->cr0 = native_read_cr0(); vmsa->xcr0 = 1; vmsa->g_pat = HV_AP_INIT_GPAT_DEFAULT; |