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xen: branch for v6.1-rc4

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Merge tag 'for-linus-6.1-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen fixes from Juergen Gross:
 "One fix for silencing a smatch warning, and a small cleanup patch"

* tag 'for-linus-6.1-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  x86/xen: simplify sysenter and syscall setup
  x86/xen: silence smatch warning in pmu_msr_chk_emulated()
This commit is contained in:
Linus Torvalds 2022-11-06 10:42:29 -08:00
commit 6e8c78d32b
2 changed files with 7 additions and 18 deletions
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2
arch/x86/xen/pmu.c
View File

@ -302,7 +302,7 @@ static bool xen_amd_pmu_emulate(unsigned int msr, u64 *val, bool is_read)
static bool pmu_msr_chk_emulated(unsigned int msr, uint64_t *val, bool is_read,
bool *emul)
{
int type, index;
int type, index = 0;
if (is_amd_pmu_msr(msr))
*emul = xen_amd_pmu_emulate(msr, val, is_read);

21
arch/x86/xen/setup.c
View File

@ -910,17 +910,9 @@ static int register_callback(unsigned type, const void *func)
void xen_enable_sysenter(void)
{
int ret;
unsigned sysenter_feature;
sysenter_feature = X86_FEATURE_SYSENTER32;
if (!boot_cpu_has(sysenter_feature))
return;
ret = register_callback(CALLBACKTYPE_sysenter, xen_entry_SYSENTER_compat);
if(ret != 0)
setup_clear_cpu_cap(sysenter_feature);
if (cpu_feature_enabled(X86_FEATURE_SYSENTER32) &&
register_callback(CALLBACKTYPE_sysenter, xen_entry_SYSENTER_compat))
setup_clear_cpu_cap(X86_FEATURE_SYSENTER32);
}
void xen_enable_syscall(void)
@ -934,13 +926,10 @@ void xen_enable_syscall(void)
mechanism for syscalls. */
}
if (boot_cpu_has(X86_FEATURE_SYSCALL32)) {
ret = register_callback(CALLBACKTYPE_syscall32,
xen_entry_SYSCALL_compat);
if (ret != 0)
if (cpu_feature_enabled(X86_FEATURE_SYSCALL32) &&
register_callback(CALLBACKTYPE_syscall32, xen_entry_SYSCALL_compat))
setup_clear_cpu_cap(X86_FEATURE_SYSCALL32);
}
}
static void __init xen_pvmmu_arch_setup(void)
{