[REVIEW][PATCH 4/4] signal/arm/kvm: Use send_sig_mceerr

From: Eric W. Biederman
Date: Mon Sep 24 2018 - 08:57:05 EST


This simplifies the code making it clearer what is going on, and
making the siginfo generation easier to maintain.

Signed-off-by: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
---
virt/kvm/arm/mmu.c | 14 ++++----------
1 file changed, 4 insertions(+), 10 deletions(-)

diff --git a/virt/kvm/arm/mmu.c b/virt/kvm/arm/mmu.c
index 91aaf73b00df..39c0405f2021 100644
--- a/virt/kvm/arm/mmu.c
+++ b/virt/kvm/arm/mmu.c
@@ -1450,20 +1450,14 @@ static void invalidate_icache_guest_page(kvm_pfn_t pfn, unsigned long size)
static void kvm_send_hwpoison_signal(unsigned long address,
struct vm_area_struct *vma)
{
- siginfo_t info;
-
- clear_siginfo(&info);
- info.si_signo = SIGBUS;
- info.si_errno = 0;
- info.si_code = BUS_MCEERR_AR;
- info.si_addr = (void __user *)address;
+ short lsb;

if (is_vm_hugetlb_page(vma))
- info.si_addr_lsb = huge_page_shift(hstate_vma(vma));
+ lsb = huge_page_shift(hstate_vma(vma));
else
- info.si_addr_lsb = PAGE_SHIFT;
+ lsb = PAGE_SHIFT;

- send_sig_info(SIGBUS, &info, current);
+ send_sig_mceerr(BUS_MCEERR_AR, (void __user *)address, lsb, current);
}

static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
--
2.17.1